Full opinion text
THOMAS, Chief Judge: This appeal presents the question of the validity of 26 C.F.R. § 1.482-7A(d)(2), under which related business entities must share the cost of employee stock compensation in order for their cost-sharing arrangements to be classified as qualified cost-sharing arrangements ("QCSA"). Although the case appears complex, the dispute between the Department of the Treasury and the taxpayer is relatively straightforward. The parties agree that, under the governing tax statute, the "arm's length" standard applies; but they disagree about how the standard may be met. The taxpayer argues that Treasury must employ a specific method to meet the arm's length standard: a comparability analysis using comparable transactions between unrelated business entities. Treasury disagrees that the arm's length standard requires the specific comparability method in all cases. Instead, the standard generally requires that Treasury reach an arm's length result of tax parity between controlled and uncontrolled business entities. With respect to the transactions at issue here, the governing statute allows Treasury to apply a purely internal method of allocation, distributing the costs of employee stock options in proportion to the income enjoyed by each related taxpayer. Our task, of course, is not to assess the better tax policy, nor the wisdom of either approach, but rather to examine whether Treasury's regulations are permitted under the statute. Applying the familiar tools used to examine administrative agency regulations, we conclude that the regulations withstand scrutiny. Therefore, we reverse the judgment of the Tax Court. I For many years, Congress and the Treasury have been concerned with American businesses avoiding taxes through the creation and use of related business entities. In the last several decades, Congress has directed particular attention to the potential for tax abuse by multinational corporations with foreign subsidiaries. If, for example, the parent business entity is in a high-tax jurisdiction, and the foreign subsidiary is in a low-tax jurisdiction, the business enterprise can shift costs and revenue between the related entities so that more taxable income is allocated to the lower tax jurisdiction. Similarly, a parent and foreign subsidiary can enter into significant tax-avoiding cost sharing arrangements. This potential for tax abuse is generally not present when similar transactions occur between unrelated business entities. In those instances, each separate unrelated entity has the incentive to maximize profit, and thus to allocate costs and income consistent with economic realities. However, among related parties, those incentives do not exist. Rather, among related parties, after-tax maximization of profit may depend on how costs and income are allocated between the parent and the subsidiary regardless of economic reality, given that after-tax profits are commonly shared. The concern about tax avoidance through the use of related business entities is not new. In the Revenue Act of 1928, Congress granted the Secretary of the Treasury the authority to reallocate the reported income and costs of related businesses "in order to prevent evasion of taxes or clearly to reflect the income of any such trades or businesses." Revenue Act of 1928, ch. 852, § 45, 45 Stat. 791, 806. This statute was designed to give Treasury the flexibility it needed to prevent transaction-shuffling between related entities for the purpose of decreasing tax liability. See H.R. REP. NO . 70-2, at 16-17 (1927) ("[T]he Commissioner may, in the case of two or more trades or businesses owned or controlled by the same interests, apportion, allocate, or distribute the income or deductions between or among them, as may be necessary in order to prevent evasion (by the shifting of profits, the making of fictitious sales, and other methods frequently adopted for the purpose of 'milking'), and in order clearly to reflect their true tax liability."); accord S. REP. NO . 70-960, at 24 (1928). The purpose of the statute was "to place a controlled taxpayer on a tax parity with an uncontrolled taxpayer." Comm'r v. First Sec. Bank of Utah , 405 U.S. 394, 400, 92 S.Ct. 1085, 31 L.Ed.2d 318 (1972) (quoting 26 C.F.R. § 1.482-1(b)(1) (1971) ). In short, the primary aim of the statute was to prevent tax evasion by related business taxpayers. In 1934, the Commissioner adopted regulations implementing the statute and first adopted the familiar "arm's length" standard: "The standard to be applied in every case is that of an uncontrolled taxpayer dealing at arm's length with another uncontrolled taxpayer." Treas. Reg. 86, art. 45-1(b) (1935). In the context of a controlled transaction, the arm's length standard is satisfied "if the results of the transaction are consistent with the results that would have been realized if uncontrolled taxpayers had engaged in the same transaction under the same circumstances (arm's length result)." 26 C.F.R. § 1.482-1(b)(1). The relevant regulation also noted: "However, because identical transactions can rarely be located, whether a transaction produces an arm's length result generally will be determined by reference to the results of comparable transactions under comparable circumstances." Id. Although the Secretary adopted the arm's length standard, courts did not hold related parties to that standard by exclusively requiring the examination of comparable transactions. For example, in Seminole Flavor Co. v. Commissioner , the Tax Court rejected a strict application of the arm's length standard in favor of an inquiry into whether the allocation of income between related parties was "fair and reasonable." 4 T.C. 1215, 1232 (1945) ; see also id. at 1233 ("Whether any such business agreement would have been entered into by petitioner with total strangers is wholly problematical."); Grenada Indus., Inc. v. Comm'r , 17 T.C. 231, 260 (1951) ("We approve an allocation ... to the extent that such gross income in fact exceeded the fair value of the services rendered ...."). And in 1962, we collected various allocation standards and outright rejected the superiority of the arm's length bargaining analysis over all others: [W]e do not agree ... that "arm's length bargaining" is the sole criterion for applying the statutory language of [ 26 U.S.C. § 482 ] in determining what the "true net income" is of each "controlled taxpayer." Many decisions have been reached under [ § 482 ] without reference to the phrase "arm's length bargaining" and without reference to Treasury Department Regulations and Rulings which state that the talismanic combination of words-"arm's length"-is the "standard to be applied in every case." Frank v. Int'l Canadian Corp. , 308 F.2d 520, 528-29 (9th Cir. 1962). Frank noted that "it was not any less proper ... to use here the 'reasonable return' standard than it was for other courts to use 'full fair value,' 'fair price including a reasonable profit,' 'method which seems not unreasonable,' 'fair consideration which reflects arm's length dealing,' 'fair and reasonable,' 'fair and reasonable' or 'fair and fairly arrived at,' or 'judged as to fairness,' all used in interpreting [the statute]." Id. (footnotes omitted). We later limited Frank to situations in which "it would have been difficult for the court to hypothesize an arm's-length transaction." Oil Base, Inc. v. Comm'r , 362 F.2d 212, 214 n.5 (9th Cir. 1966). However, Frank 's central point remained: the arm's length standard based on comparable transactions was not the sole basis of reallocating costs and income under the statute. In the 1960s, the problem of abusive transfer pricing practices created a new adherence to a stricter arm's length standard. In response to concerns about the undertaxation of multinational business entities, Congress considered reworking the Tax Code to resolve the difficulty posed by the application of the arm's length standard to related party transactions. H.R. REP. NO 87-1447, at 28-30 (1962). However, it instead asked Treasury to "explore the possibility of developing and promulgating regulations ... which would provide additional guidelines and formulas for the allocation of income and deductions" under 26 U.S.C. § 482. H.R. REP. NO 87-2508, at 19 (1962) (Conf. Rep.), as reprinted in 1962 U.S.C.C.A.N. 3732, 3739. Legislators believed that § 482 authorized the Secretary to employ a profit-split allocation method without amendment. Id. ; H.R. REP. NO 87-1447, at 28-29. In 1968, following Congress's entreaty, Treasury finalized the first regulation tailored to the issue of intangible property development in QCSAs. 26 C.F.R. § 1.482-2(d) (1968). The 1968 regulations "constituted a radical and unprecedented approach to the problem they addressed-notwithstanding their being couched in terms of the 'arm's length standard,' and notwithstanding that that standard had been the nominal standard under the regulations for some 30 years." Stanley I. Langbein, The Unitary Method and the Myth of Arm's Length , 30 TAX NOTES 625, 644 (1986). In addition to three arm's length pricing methods, the 1968 regulations included a "fourth method," which was essentially open-ended: "Where none of the three methods of pricing ... can reasonably be applied under the facts and circumstances as they exist in a particular case, some appropriate method of pricing other than those described ..., or variations on such methods, can be used." 26 C.F.R. § 1.482-2(e)(1)(iii) (1968). Following the promulgation of the 1968 regulation, courts continued to employ a comparability analysis, but not to the exclusion of other methodologies. Reuven S. Avi-Yonah, The Rise & Fall of Arm's Length: A Study in the Evolution of U.S. International Taxation , 15 VA. TAX REV . 89, 108-29 (1995). Indeed, a study determined that direct comparable transactions were located and applied in only 3% of the Internal Revenue Service's adjustments prior to the 1986 amendment. U.S. GEN. ACCOUNTING OFFICE ., GGD-81-81, IRS COULD BETTER PROTECT U.S. TAX INTERESTS IN DETERMINING THE INCOME OF MULTINATIONAL CORPORATIONS (1981). The decades following the 1968 regulations involved a gradual realization by all parties concerned, but especially Congress and the IRS, that the [comparability method of meeting the arm's length standard], firmly established ... as the sole standard under section 482, did not work in a large number of cases, and in other cases its misguided application produced inappropriate results. The result was a deliberate decision to retreat from the standard while still paying lip service to it. Avi-Yonah, supra , at 112; see also James P. Fuller, Section 482: Revisited Again , 45 TAX L. REV . 421, 453 (1990) ("[T]he 1986 Act's commensurate with income standard is not really a new approach to § 482."). Ultimately, as controlled transactions increased in frequency and complexity, particularly with respect to intangible property, Congress determined that legislative action was necessary. The Tax Reform Act of 1986 reflected Congress's view that strict adherence to the comparability method of meeting the arm's length standard prevented tax parity. Thus, the Tax Reform Act of 1986 added a sentence to § 482 that largely forms the basis of the present dispute, providing that: In the case of any transfer (or license) of intangible property (within the meaning of section 936(h)(3)(B)), the income with respect to such transfer or license shall be commensurate with the income attributable to the intangible. Tax Reform Act of 1986, 26 U.S.C. § 482 (1986) (as amended 2018). The House Ways and Means Committee recommended the addition of the commensurate with income clause because it was "concerned" that the current code and regulations "may not be operating to assure adequate allocations to the U.S. taxable entity of income attributable to intangibles." H.R. REP. NO. 99-426, at 423 (1985). The clause was intended to correct a "recurrent problem"-"the absence of comparable arm's length transactions between unrelated parties, and the inconsistent results of attempting to impose an arm's length concept in the absence of comparables." Id. at 423-24. The House Report makes clear that the committee intended the commensurate with income standard to displace a comparability analysis where comparable transactions cannot be found: A fundamental problem is the fact that the relationship between related parties is different from that of unrelated parties. ... [M]ultinational companies operate as an economic unit, and not "as if" they were unrelated to their foreign subsidiaries. ... .... Certain judicial interpretations of section 482 suggest that pricing arrangements between unrelated parties for items of the same apparent general category as those involved in the related party transfer may in some circumstances be considered a "safe harbor" for related party pricing arrangements, even though there are significant differences in the volume and risks involved, or in other factors. While the committee is concerned that such decisions may unduly emphasize the concept of comparables even in situations involving highly standardized commodities or services, it believes that such an approach is sufficiently troublesome where transfers of intangibles are concerned that a statutory modification to the intercompany pricing rules regarding transfers of intangibles is necessary. .... ... There are extreme difficulties in determining whether the arm's length transfers between unrelated parties are comparable. The committee thus concludes that it is appropriate to require that the payment made on a transfer of intangibles to a related foreign corporation ... be commensurate with the income attributable to the intangible. ... .... ... [T]he committee intends to make it clear that industry norms or other unrelated party transactions do not provide a safe-harbor minimum payment for related party intangible transfers. Where taxpayers transfer intangibles with a high profit potential, the compensation for the intangibles should be greater than industry averages or norms. Id. at 424-25 (footnote and citation omitted). Treasury's first response to the Tax Reform Act was the "White Paper," an intensive study published in 1988. A Study of Intercompany Pricing Under Section 482 of the Code , I.R.S. Notice 88-123, 1988-2 C.B. 458 ("White Paper"). The White Paper confirmed that Treasury believed the commensurate with income standard to be consistent with the arm's length standard (and that Treasury understood Congress to share that understanding). Id. at 475. Treasury wrote that a comparability analysis must be performed where possible, id. at 474, but it also suggested a "clear and convincing evidence" standard for comparable transactions, indicating that a comparability analysis would rarely be possible. Id. at 478. The White Paper signaled a shift in the interpretation of the arm's length standard as it had been defined following the 1968 regulations. Treasury advanced a new allocation method, the "basic arm's length return method," White Paper at 488, that would apply only in the absence of comparable transactions and would essentially split profits between the related parties, id. at 490. Commentators understood that, by attempting to synthesize the arm's length standard and the commensurate with income provision, Treasury was moving away from a view that the arm's length standard always requires a comparability analysis. Marc M. Levey, Stanley C. Ruchelman, & William R. Seto, Transfer Pricing of Intangibles After the Section 482 White Paper , 71 J. TAX'N 38, 38 (1989) ; Josh O. Ungerman, Comment, The White Paper: The Stealth Bomber of the Section 482 Arsenal , 42 SW. L.J. 1107, 1128-29 (1989). In 1994 and 1995, Treasury issued new regulations that defined the arm's length standard as result-oriented, meaning that the goal is parity in taxable income rather than parity in the method of allocation itself. 26 C.F.R. § 1.482-1(b)(1) (1994) ("A controlled transaction meets the arm's length standard if the results of the transaction are consistent with the results that would have been realized if uncontrolled taxpayers had engaged in the same transaction under the same circumstances (arm's length result)."). However, the arm's length standard remained "the standard to be applied in every case." Id. The regulations also set forth methods by which income could be allocated among related parties in a manner consistent with the arm's length standard. Id. § 1.482-1(b)(2)(i) (1994). According to Treasury, the 1994 regulations defined the arm's length standard in terms of "the results that would have been realized if uncontrolled taxpayers had engaged in the same transaction under the same circumstances." Compensatory Stock Options Under Section 482, 67 Fed. Reg. 48,997 -01, 48,998 (proposed July 29, 2002). The 1995 regulation provided that "[i]ntangible development costs" included "all of the costs incurred by [a controlled] participant related to the intangible development area." 26 C.F.R. § 1.482-7(d)(1) (1995). By contrast to the 1994 regulation, the 1995 regulation-consistent with the 1986 Conference Report -"implement[ed] the commensurate with income standard in the context of cost sharing arrangements" by "requir[ing] that controlled participants in a [QCSA] share all costs incurred that are related to the development of intangibles in proportion to their shares of the reasonably anticipated benefits attributable to that development." Compensatory Stock Options Under Section 482, 67 Fed. Reg. at 48,998. Neither the Tax Reform Act nor the implementing regulations specifically addressed allocation of employee stock compensation, which is the issue in this dispute. However, that omission was unsurprising given that the practice did not develop on a major scale until the 1990s. Zvi Bodie, Robert S. Kaplan, & Robert C. Merton, For the Last Time: Stock Options Are an Expense , HARV. BUS. REV ., Mar. 2003, at 62, 67. Beginning in 1997, the Secretary interpreted the "all ... costs" language to include stock-based compensation, meaning that controlled taxpayers had to share the costs (and associated deductions) of providing employee stock compensation. Xilinx, Inc. v. Comm'r , 598 F.3d 1191, 1193-94 (9th Cir. 2010). In 2003, Treasury issued the cost-sharing regulations that are challenged in this case. Treasury intended for the 2003 amendments to clarify, rather than to overhaul, the 1994 and 1995 regulations. The clarifications were twofold. First, the amendments directly classified employee stock compensation as a cost to be allocated between QCSA participants. Compensatory Stock Options Under Section 482 (Proposed), 67 Fed. Reg. at 48,998 ; 26 C.F.R. § 1.482-7A(d)(2). Second, the "coordinating amendments" clarified Treasury's belief that the cost-sharing regulations, including § 1.482-7A(d)(2), operate to produce an arm's length result. Compensatory Stock Options Under Section 482 (Proposed), 67 Fed. Reg. at 48,998 ; 26 C.F.R. § 1.482-7A(a)(3). Specifically, § 1.482-7A provides that costs shared by related parties to a QCSA are not subject to IRS reallocation for tax purposes if each entity's share of the intangible property development costs equals each entity's reasonably anticipated benefits. Section 1.482-7A(a)(3) incorporates and coordinates with the arm's length standard: A qualified cost sharing arrangement produces results that are consistent with an arm's length result ... if, and only if, each controlled participant's share of the costs (as determined under paragraph (d) of this section) of intangible development under the qualified cost sharing arrangement equals its share of reasonably anticipated benefits attributable to such development .... Section 1.482-7A(d)(2) provides that parties to a QCSA must allocate stock-based compensation between themselves: [In a QCSA], a controlled participant's operating expenses include all costs attributable to compensation, including stock-based compensation. As used in this section, the term stock-based compensation means any compensation provided by a controlled participant to an employee or independent contractor in the form of equity instruments, options to acquire stock (stock options), or rights with respect to (or determined by reference to) equity instruments or stock options, including but not limited to property to which section 83 applies and stock options to which section 421 applies, regardless of whether ultimately settled in the form of cash, stock, or other property. These regulations, and the procedure employed in adopting them, form the basis of the present controversy. II At issue is Altera Corporation ("Altera") & Subsidiaries' tax liability for the years 2004 through 2006. During the relevant period, Altera and its subsidiaries designed, manufactured, marketed, and sold programmable logic devices, which are electronic components that are used to build circuits. In May of 1997, Altera entered into a cost-sharing agreement with one of its foreign subsidiaries, Altera International, Inc., a Cayman Islands corporation ("Altera International"), which had been incorporated earlier that year. Altera granted to Altera International a license to use and exploit Altera's preexisting intangible property everywhere in the world except the United States and Canada. In exchange, Altera International paid royalties to Altera. The parties agreed to pool their resources to share research and development ("R&D") costs in proportion to the benefits anticipated from new technologies. The question in this appeal is whether Treasury was permitted, for tax liability purposes, to re-allocate the cost of employee stock-based compensation. Altera and the IRS agreed to an Advance Pricing Agreement covering the 1997-2003 tax years. Pursuant to this agreement, Altera shared with Altera International stock-based compensation costs as part of the shared R&D costs. After the Treasury regulations were amended in 2003, Altera and Altera International amended their cost-sharing agreement to comply with the modified regulations, continuing to share employee stock compensation costs. The agreement was amended again in 2005 following the Tax Court's opinion in Xilinx Inc. & Consolidated Subsidiaries v. Commissioner , which involved a challenge to the 1994-1995 cost-sharing regulations. 125 T.C. 37 (2005). The parties agreed to "suspend the payment of any portion of [a] Cost Share ... to the extent such payment relates to the Inclusion of Stock-Based Compensation in R&D Costs" unless and until a court upheld the validity of the 2003 cost-sharing regulations. The following provision explains Altera's reasoning: The Parties believe that it is more likely than not that (i) the Tax Court's conclusion in Xilinx v. Commissioner , 125 T.C. [No.] 4 (2005), that the arm's length standard controls the determination of costs to be shared by controlled participants in a qualified cost sharing arrangement should also apply to Treas. Reg. § 1.482-7(d)(2) (as amended by T.D. 9088), and (ii) the Parties' inclusion of Stock-Based Compensation in R&D Costs pursuant to Amendment I would be contrary to the arm's length standard. Altera and its U.S. subsidiaries did not account for R&D-related stock-based compensation costs on their consolidated 2004-2007 federal income tax returns. The IRS issued two notices of deficiency to the group, applying § 1.482-7(d)(2) to increase the group's income by the following amounts: 2004 $24,549,315 2005 $23,015,453 2006 $17,365,388 2007 $15,463,565 Altera timely filed petitions in the Tax Court. The parties filed cross-motions for summary judgment, and the Tax Court granted Altera's motion. Sitting en banc, the Tax Court held that § 1.482-7A(d)(2) is invalid under the Administrative Procedure Act ("APA"), 5 U.S.C. §§ 701 - 706. Altera Corp. & Subsidiaries v. Comm'r , 145 T.C. 91 (2015). The Tax Court unanimously determined: (1) that the Commissioner's allocation of income and expenses between related entities must be consistent with the arm's length standard; and (2) that the arm's length standard is not met unless the Commissioner's allocation can be compared to an actual transaction between unrelated entities. The Tax Court reasoned that the Commissioner could not require related parties to share stock compensation costs, because the Commissioner had not considered any unrelated party transactions in which the parties shared such costs. The Tax Court held that the agency's decisionmaking process was fundamentally flawed because: (1) it rested on speculation rather than on hard data and expert opinions; and (2) it failed to respond to significant public comments, particularly those pointing out uncontrolled cost-sharing arrangements in which the entities did not share stock compensation costs. Id. at 133-34. The Tax Court's decision rested largely on its own opinion in Xilinx , in which it determined that the arm's length standard mandates a comparability analysis. Id. at 118 (citing Xilinx , 125 T.C. at 53-55 ). In its decision in this case, as well, the Tax Court suggested that the Commissioner cannot require related entities to share stock compensation costs unless and until the Commissioner locates uncontrolled transactions in which these costs are shared. Id. at 118-19. The Tax Court reached five holdings: (1) the 2003 amendments constitute a final legislative rule subject to the requirements of the APA; (2) Motor Vehicle Manufacturers Ass'n of the United States, Inc. v. State Farm Mutual Automobile Insurance Co. , 463 U.S. 29, 103 S.Ct. 2856, 77 L.Ed.2d 443 (1983), provides the appropriate standard of review because the standard set forth in Chevron, U.S.A., Inc. v. Natural Resources Defense Council, Inc. , 467 U.S. 837, 104 S.Ct. 2778, 81 L.Ed.2d 694 (1984), incorporates State Farm 's " reasoned decisionmaking" standard; (3) Treasury did not support adequately its decision to allocate the costs of employee stock compensation between related parties; (4) Treasury's procedural regulatory deficiencies were not harmless; and (5) § 1.482-7A(d)(2) is invalid under the APA. III Our task in this appeal, then, is to determine whether Treasury's 2003 regulations are lawful. In the context of the arguments made in this case, we evaluate the validity of the agency's regulations under both Chevron and State Farm , which "provide for related but distinct standards for reviewing rules promulgated by administrative agencies." Catskill Mountains Chapter of Trout Unlimited, Inc. v. EPA , 846 F.3d 492, 521 (2d Cir. 2017). " State Farm is used to evaluate whether a rule is procedurally defective as a result of flaws in the agency's decisionmaking process." Id. " Chevron , by contrast, is generally used to evaluate whether the conclusion reached as a result of that process-an agency's interpretation of a statutory provision it administers-is reasonable." Id. "A litigant challenging a rule may challenge it under State Farm , Chevron , or both." Id. Altera challenges both the procedural adequacy of the APA process and the substance of the regulation. A We first turn to Chevron analysis. 1 Under Chevron , we first apply the traditional rules of statutory construction to determine whether "Congress has directly spoken to the precise question at issue." 467 U.S. at 842, 104 S.Ct. 2778. We start with the plain statutory text and, "when deciding whether the language is plain, we must read the words 'in their context and with a view to their place in the overall statutory scheme.' " King v. Burwell , --- U.S. ----, 135 S. Ct. 2480, 2489, 192 L.Ed.2d 483 (2015) (quoting FDA v. Brown & Williamson Tobacco Corp. , 529 U.S. 120, 133, 120 S.Ct. 1291, 146 L.Ed.2d 121 (2000) ). In addition, we examine the legislative history, the statutory structure, and "other traditional aids of statutory interpretation" in order to ascertain congressional intent. Middlesex Cty. Sewerage Auth. v. Nat'l Sea Clammers Ass'n , 453 U.S. 1, 13, 101 S.Ct. 2615, 69 L.Ed.2d 435 (1981). If, after conducting that Chevron step one examination, we conclude that the statute is silent or ambiguous on the issue, we then defer to the agency's interpretation so long as it "is based on a permissible construction of the statute." Chevron , 467 U.S. at 843, 104 S.Ct. 2778. A permissible construction is one that is not "arbitrary, capricious, or manifestly contrary to the statute." Id. at 844, 104 S.Ct. 2778. Ultimately, questions of deference boil down to whether "it appears that Congress delegated authority to the agency generally to make rules carrying the force of law, and that the agency interpretation claiming deference was promulgated in the exercise of that authority." United States v. Mead Corp. , 533 U.S. 218, 226-27, 121 S.Ct. 2164, 150 L.Ed.2d 292 (2001). "When Congress has 'explicitly left a gap for an agency to fill, there is an express delegation of authority to the agency to elucidate a specific provision of the statute by regulation,' and any ensuing regulation is binding in the courts unless procedurally defective, arbitrary or capricious in substance, or manifestly contrary to the statute." Id. at 227, 121 S.Ct. 2164 (quoting Chevron , 467 U.S. at 843-44, 104 S.Ct. 2778 ). Here, the resolution of our step one Chevron examination is straightforward. Section 482 does not speak directly to whether the Commissioner may require parties to a QCSA to share employee stock compensation costs in order to receive the tax benefits associated with entering into a QCSA. Thus, there is no question that the statute remains ambiguous regarding the method by which Treasury is to make allocations based on stock-based compensation. Altera argues that the statute, by its terms, cannot apply to stock-based compensation. According to Altera, stock-based compensation is not "transferred" between parties because only preexisting intangibles can be transferred. Thus, for Altera, Treasury has exceeded the delegation of authority apparent from the plain text of the statute. We are not persuaded. When parties enter into a QCSA, they are transferring future distribution rights to intangibles, albeit intangibles that have yet to be developed. Indeed, the present-day transfer of those rights provides the main incentive for entering into a QCSA. The right to distribute intangibles to be developed later is, itself, one right in the bundle of property rights that exists at the time that parties enter into a QCSA. Moreover, even assuming that the crucial transfer does not occur contemporaneously, § 482 applies "[i]n the case of any transfer ... of intangible property" that produces income. (Emphasis added.) That phrasing is as broad as possible, and it cannot reasonably be read to exclude the transfers of expected intangible property. See, e.g. , United States v. Gonzales , 520 U.S. 1, 5, 117 S.Ct. 1032, 137 L.Ed.2d 132 (1997) ("Read naturally, the word 'any' has an expansive meaning ...."); see also Republic of Iraq v. Beaty , 556 U.S. 848, 856, 129 S.Ct. 2183, 173 L.Ed.2d 1193 (2009) ("Of course the word 'any' (in the phrase 'any other provision of law') has an 'expansive meaning, giving us no warrant to limit the class of provisions of law [encompassed by the statutory provision]." (citation omitted)). Additionally, the sentence necessarily is forward-looking because the production of taxable income always follows the transfer. In short, the text of the statute does not limit its application to preexisting intangibles in the way Altera's argument suggests. Because parties to a QCSA transfer cost-shared intangibles-including stock-based compensation-they are subject to regulation under 26 U.S.C. § 482. 2 Thus, we must move on to Chevron step two to consider whether Treasury's interpretation of § 482 as to allocation of employee stock option costs is permissible. An agency's interpretation of statutory authority is examined "in light of the statute's text, structure and purpose." Miguel-Miguel v. Gonzales , 500 F.3d 941, 949 (9th Cir. 2007). The interpretation fails if it is "unmoored from the purposes and concerns" of the underlying statutory regime. Judulang v. Holder , 565 U.S. 42, 64, 132 S.Ct. 476, 181 L.Ed.2d 449 (2011). Thus, Congress's purpose in enacting and amending § 482 in 1986 is key to resolution of this issue. The congressional purpose in enacting § 482 was to establish tax parity. First Sec. Bank of Utah , 405 U.S. at 400, 92 S.Ct. 1085. In the 1986 amendments, Congress called for an approach to allocation of costs and income that would "reasonably reflect the actual economic activity undertaken by each [party to a QCSA]," H.R. REP. NO. 99-841, at II-638 (1986) (Conf. Rep.). Put another way, Congress's objective in amending § 482 was to ensure that income follows economic activity. Id. at II-637. Although the 1986 amendment delegates to Treasury the choice of a specific methodology to achieve that end, it suggested: "In the case of any transfer (or license) of intangible property ..., the income with respect to such transfer or license shall be commensurate with the income attributable to the intangible." This standard is a purely internal one, that is, internal to the entity being taxed, and evidence supports Treasury's belief that Congress intended it to be. H.R. REP. NO . 99-426, at 423-35; H.R. REP. NO . 99-841, at II-637 (Conf. Rep.). In the QCSA context, Congress did not want to interfere with controlled cost-sharing arrangements, but only to the degree that the allocation of costs and income "reasonably reflect[s] the actual economic activity undertaken by each." H.R. REP. NO. 99-841, at II-638 (Conf. Rep.). In light of this history, Treasury's decision to adopt a methodology that followed actual economic activity was reasonable. So was Treasury's determination that uncontrolled cost-sharing arrangements do not provide helpful guidance regarding allocations of employee stock compensation. When it amended § 482 in 1986, Congress bemoaned the difficulties associated with finding and using data involving high-profit intangibles. See H.R. REP. NO . 99-426, at 425 ("There are extreme difficulties in determining whether the arm's length transfers between unrelated parties are comparable. ... [I]t is appropriate to require that the payment made on a transfer of intangibles to a related foreign corporation be commensurate with the income attributable to the intangible."); see also Compensatory Stock Options Under Section 482, 68 Fed. Reg. 51,171 -02, 51,173 (Aug. 26, 2003) (citing H.R. REP. NO . 99-426, at 423-25) ("As recognized in the legislative history of the Tax Reform Act of 1986, there is little, if any, public data regarding transactions involving high-profit intangibles."). It follows that Congress granted Treasury authority to develop methods that did not rely on analysis of these problematic comparable transactions. Indeed, Treasury echoed Congress's rationale for amending § 482 in the first place when it published the final rule. Id. at 51,173 ("The uncontrolled transactions cited by commentators do not share enough characteristics of QCSAs involving the development of high-profit intangibles to establish that parties at arm's length would not take stock options into account in the context of an arrangement similar to a QCSA."). What is more, although Altera suggests there can be only one understanding of the methodology required by the arm's length standard, historically the definition of the arm's length standard has been a more fluid one. Indeed, as we have discussed, for most of the twentieth century the arm's length standard explicitly permitted the use of flexible methodology in order to achieve an arm's length result . See also H.R. REP. NO. 87-2508, at 18-19 (1962) (Conf. Rep.) (noting that, in 1962, Congress stated that Treasury should "provide additional guidelines and formulas" to achieve arm's length results). It is true that, more recently, an understanding that the primary means of reaching an arm's length result suggested the analysis of comparable transactions. But, in the lead-up to the 1986 amendments, Congress voiced numerous concerns regarding reliance on this methodology. Further, as we have discussed, courts for more than half a century have held that a comparable transaction analysis was not the exclusive methodology to be employed under the statute. In light of the historic versatility of methodology, it is reasonable that Treasury would understand that Congress intended for it to depart from analysis of comparable transactions as the exclusive means of achieving an arm's length result. In addition, Treasury reasonably concluded that doing away with analysis of comparable transactions was an efficient means of ensuring that § 482 would "operat[e] to assure adequate allocations to the U.S. taxable entity of income attributable to intangibles in [QCSAs]." H.R. REP. NO . 99-426, at 423. Congress expressed numerous concerns that pre-1986 allocation methods permitted entities to undervalue their tax liability by placing undue emphasis on "the concept of comparables" and basing allocations on industry norms, rather than on actual economic activity. Id. at 424-25. Doing away with analysis of comparable transactions, and instead requiring an internal method of allocation, proves a reasonable method of alleviating these concerns. In sum, Treasury reasonably understood § 482 as an authorization to require internal allocation methods in the QCSA context, provided that the costs and income allocated are proportionate to the economic activity of the related parties. These internal allocation methods are reasonable methods for reaching the arm's length results required by statute. While interpreting the statute to do away with reliance on comparables may not have been "the only possible interpretation" of Congress's intent, it proves a reasonable one. Entergy Corp. v. Riverkeeper, Inc. , 556 U.S. 208, 218, 129 S.Ct. 1498, 173 L.Ed.2d 369 (2009). Thus, Treasury's interpretation is not "arbitrary, capricious, or manifestly contrary to the statute," and it is therefore permissible under Chevron, 467 U.S. at 844, 104 S.Ct. 2778. 3 Altera contends that the Commissioner misreads § 482 and its history, arguing that the addition of the commensurate with income standard to § 482 did nothing to change the meaning and operation of the arm's length standard, thus rendering Treasury's interpretation unreasonable. Altera supports its argument with a canon of construction: "Amendments by implication, like repeals by implication, are not favored." United States v. Welden , 377 U.S. 95, 103 n.12, 84 S.Ct. 1082, 12 L.Ed.2d 152 (1964). That canon does not apply here. It operates to prevent courts from attributing unspoken motives to legislators, not to force courts to ignore legislative action and express legislative history. In addition, cases invoking the maxim typically refer to a later-enacted, separate statute or provision amending a previous statute or provision; most cases do not involve changes to the same statute or provision. It is illogical to argue that amending a singular statute does not alter its meaning. Altera's interpretation of the 1986 amendment would render the commensurate with income clause meaningless except in two circumstances: (1) to allow the Commissioner periodically to adjust prices initially assigned following a comparability analysis; and (2) to reflect a party's contribution of existing intangible property or "buy-in" to a cost-sharing arrangement. This narrow reading of § 482 is not supported by the text or history of the 1986 amendment. The Commissioner's allocation of employee stock compensation costs between related parties is necessary for Treasury to fulfill its obligation under § 482. Congress did not intend to interfere with qualified cost-sharing arrangements when those arrangements provided for the allocation of income consistent with the commensurate with income provision. H.R. REP. NO. 99-841, at II-638 (Conf. Rep.). 4 Altera makes much of the United States's treaty obligations with other countries, asserting that a purely internal standard is inconsistent with the standards agreed to therein and is therefore unreasonable. However, there is no evidence that our treaty obligations bind us to the analysis of comparable transactions. As demonstrated by nearly a century of interpreting § 482 and its precursor, the arm's length standard is not necessarily confined to one methodology. It reflects neither how related parties behave nor how they are taxed. Moreover, our most recent treaties incorporate not only the arm's length standard, but also the 2003 regulations. See, e.g. , U.S. DEP'T OF TREASURY, TECHNICAL EXPLANATION OF THE CONVENTION BETWEEN THE UNITED STATES AND POLAND FOR THE AVOIDANCE OF DOUBLE TAXATION 31 (2013) ("It is understood that the Code section 482 'commensurate with income' standard for determining appropriate transfer prices for intangibles operates consistently with the arm's-length standard. The implementation of this standard in the regulations under Code section 482 is in accordance with the general principles of paragraph 1 of Article 9 of the Convention ...."). B Though Treasury's interpretation of its statutory grant of authority was reasonable, we also must examine whether the procedures used in its promulgation prove defective under the APA. Catskill Mountains , 846 F.3d at 522 ("[I]f an interpretive rule was promulgated in a procedurally defective manner, it will be set aside regardless of whether its interpretation of the statute is reasonable."). After reviewing the administrative record, we conclude that Treasury complied with the procedural requirements of the APA and, therefore, the regulations survive State Farm scrutiny. Section 706 of the APA directs courts to "decide all relevant questions of law, interpret constitutional and statutory provisions, and determine the meaning or applicability of the terms of an agency action." 5 U.S.C. § 706 (flush language). Agencies may not act in ways that are "arbitrary, capricious, an abuse of discretion, or otherwise not in accordance with law." Id. § 706(2)(A). The APA "sets forth the full extent of judicial authority to review executive agency action for procedural correctness." FCC v. Fox Television Stations, Inc. , 556 U.S. 502, 513, 129 S.Ct. 1800, 173 L.Ed.2d 738 (2009). It "prescribes a three-step procedure for so-called 'notice-and-comment rulemaking.' " Perez v. Mortg. Bankers Ass'n , --- U.S. ----, 135 S. Ct. 1199, 1203, 191 L.Ed.2d 186 (2015) (citing 5 U.S.C. § 553 ). First, a "[g]eneral notice of proposed rule making" must ordinarily be published in the Federal Register. 5 U.S.C. § 553(b). Second, provided that "notice [is] required," the agency must "give interested persons an opportunity to participate in the rule making through submission of written data, views, or arguments." Id. § 553(c). "An agency must consider and respond to significant comments received during the period for public comment." Perez , 135 S. Ct. at 1203. Third, the agency must incorporate in the final rule "a concise general statement of [its] basis and purpose." 5 U.S.C. § 553(c). Altera does not dispute that Treasury satisfied the first step by giving notice of the 2003 regulations. Id. Nor does there appear to be a controversy as to whether Treasury included in the final rule "a concise general statement of [its] basis and purpose." Id. ; 5 U.S.C. § 553. Rather, Altera argues that the regulations fail on the second step, asserting that: (1) Treasury improperly rejected comments submitted in opposition to the proposed rule, (2) Treasury's current litigation position is inconsistent with statements made during the rulemaking process, (3) Treasury did not adequately support its position that employee stock compensation is a cost, and (4) a more searching review is required under Fox , because the agency altered its position. We address each in turn. 1 Under State Farm , the touchstone of "arbitrary and capricious" review under the APA is "reasoned decisionmaking." State Farm , 463 U.S. at 52, 103 S.Ct. 2856. "[T]he agency must examine the relevant data and articulate a satisfactory explanation for its action including a 'rational connection between the facts found and the choice made.' " Id. at 43, 103 S.Ct. 2856 (quoting Burlington Truck Lines, Inc. v. United States , 371 U.S. 156, 168, 83 S.Ct. 239, 9 L.Ed.2d 207 (1962) ). "[A]gency action is lawful only if it rests 'on a consideration of the relevant factors.' " Michigan v. EPA , --- U.S. ----, 135 S. Ct. 2699, 2706, 192 L.Ed.2d 674 (2015) (quoting State Farm , 463 U.S. at 43, 103 S.Ct. 2856 ). However, we may not set aside agency action simply because the rulemaking process could have been improved; rather, we must determine whether the agency's "path may reasonably be discerned." State Farm , 463 U.S. at 43, 103 S.Ct. 2856 (quoting Bowman Transp., Inc. v. Ark.-Best Freight Sys., Inc. , 419 U.S. 281, 286, 95 S.Ct. 438, 42 L.Ed.2d 447 (1974) ). In considering and responding to comments, "the agency must examine the relevant data and articulate a satisfactory explanation for its action including a 'rational connection between the facts found and the choice made.' " Id. (quoting Burlington Truck Lines , 371 U.S. at 168, 83 S.Ct. 239 ). "[A]n agency need only respond to 'significant' comments, i.e. , those which raise relevant points and which, if adopted, would require a change in the agency's proposed rule." Am. Mining Congress v. EPA , 965 F.2d 759, 771 (9th Cir. 1992) (quoting Home Box Office v. FCC , 567 F.2d 9, 35 & n.58 (D.C. Cir. 1977) (per curiam)). If the comments ignored by the agency would not bear on the agency's "consideration of the relevant factors," we may not reverse the agency's decision. Id. Treasury published its notice of proposed rulemaking in 2002. Compensatory Stock Options Under Section 482 (Proposed), 67 Fed. Reg. 48,997 -01. In its notice, Treasury made clear that it was relying on the commensurate with income provision. Id. at 48,998. To support its position, Treasury drew from the legislative history of the 1986 amendment, explaining that Congress intended a party to a QCSA to "bear its portion of all research and development costs." Id. (quoting H.R. REP. NO . 99-841, at II-638 (Conf. Rep.)). It also informed interested parties of its intent to coordinate the new regulations with the arm's length standard, suggesting that it was attempting to synthesize the potentially disparate standards found within § 482 itself. Id. at 48,998, 49,000 -01. Commenters responded by attacking the proposed regulations as inconsistent with the traditional arm's length standard because the methodology did not involve analysis of comparable transactions. To support their position, they primarily discussed arm's length agreements in which unrelated parties did not mention employee stock options. They explained that unrelated parties do not share stock compensation costs because it is difficult to value stock-based compensation, and there can be a great deal of expense and risk involved. In the preamble to the final rule, Treasury dismissed the comments (and, relatedly, the behavior of controlled taxpayers): Treasury and the IRS continue to believe that requiring stock-based compensation to be taken into account for purposes of QCSAs is consistent with the legislative intent underlying section 482 and with the arm's length standard (and therefore with the obligations of the United States under its income tax treaties ...). The legislative history of the Tax Reform Act of 1986 expressed Congress's intent to respect cost sharing arrangements as consistent with the commensurate with income standard, and therefore consistent with the arm's length standard, if and to the extent that the participants' shares of income "reasonably reflect the actual economic activity undertaken by each." See H.R. CONF. REP. NO . 99-481, at II-638 (1986).... [I]n order for a QCSA to reach an arm's length result consistent with legislative intent, the QCSA must reflect all relevant costs, including such critical elements of cost as the cost of compensating employees for providing services related to the development of the intangibles pursuant to the QCSA. Treasury and the IRS do not believe that there is any basis for distinguishing between stock-based compensation and other forms of compensation in this context. Treasury and the IRS do not agree with the comments that assert that taking stock-based compensation into account in the QCSA context would be inconsistent with the arm's length standard in the absence of evidence that parties at arm's length take stock-based compensation into account in similar circumstances. ... The uncontrolled transactions cited by commentators do not share enough characteristics of QCSAs involving the development of high-profit intangibles to establish that parties at arm's length would not take stock options into account in the context of an arrangement similar to a QCSA. Compensatory Stock Options under Section 482 (Preamble to Final Rule), 68 Fed. Reg. 51,171 -02, 51,172-73 (Aug. 26, 2003). Treasury added: Treasury and the IRS believe that if a significant element of [the costs shared by unrelated parties] consists of stock-based compensation, the party committing employees to the arrangement generally would not agree to do so on terms that ignore the stock-based compensation. Id. at 51,173. By submitting the cited transactions between unrelated parties, the commentators apparently assumed that Treasury would employ analysis of comparable transactions. This assumption, however, overlooks Treasury's decision to do away with analysis of comparable transactions in the first place-a decision that was made clear enough by citations to legislative history in the notice of proposed rulemaking and in the preamble to the final rule. As discussed in our Chevron analysis, Treasury's conclusion that it could require parties to a QCSA to share all costs was a reasonable one. Thus, "significant" comments that required a response would have spoken to why this interpretation was not, in fact, reasonable, so that adopting the comments would require Treasury to change the regulation. Am. Mining Congress , 965 F.2d at 771. As an example, Treasury would have been required to respond to comments demonstrating that doing away with analysis of comparables did not, in fact, serve the purposes of parity set out in the statute. Indeed, the cited transactions actually reinforced the original justification for adopting a purely internal methodology-the lack of transactions comparable to those occurring between parties to a QCSA. Specifically, as Treasury remarked, the submitted transactions did not "share enough characteristics of QCSAs involving the development of high-profit intangibles" to provide grounds for accurate comparison. Because of this lack of similar transactions, Treasury justifiably chose to employ methodology that did not depend on non-existent comparables to satisfy the commensurate with income test and achieve tax parity. In this way, the comments reinforced Treasury's premise for adopting the purely internal methodology, but were irrelevant to the underlying choice of methodology. Treasury did not err in refusing to examine them more rigorously. In sum, we cannot find a failure in Treasury's refusal to consider comments that proved irrelevant to its decisionmaking process. Here, Treasury gave sufficient notice of what it intended to do and why, and the submitted comments were irrelevant to the issues Treasury was considering. Because the comments had no bearing on "relevant factors" to the rulemaking, nor any bearing on the final rule, there was no APA violation. Am. Mining Congress , 965 F.2d at 771. 2 Treasury's current litigation position is not inconsistent with the statements it made to support the 2003 regulations at the time of the rulemaking. Altera argues that its position is justified by SEC v. Chenery Corp. , 332 U.S. 194, 67 S.Ct. 1760, 91 L.Ed. 1995 (1947). "[A] reviewing court ... must judge the propriety of [agency] action solely by the grounds invoked by the agency." Id. at 196, 67 S.Ct. 1760. "If those grounds are inadequate or improper, the court is powerless to affirm the administrative action by substituting what it considers to be a more adequate or proper basis." Id. Altera argues that the Commissioner cannot now claim that "Treasury reasonably determined that it was statutorily authorized to dispense with comparability analysis" because "[n]owhere in the regulatory history did the Secretary suggest that he 'was statutorily authorized to dispense with comparability analysis.' " But these arguments misunderstand the rulemaking requirements imposed by Chenery . Chenery does not require us to adopt Altera's position as to how the arm's length standard operates. Instead, we must "defer to an interpretation which was a necessary presupposition of [the agency's] decision," if reasonable, even when alternative interpretations are available. Nat'l R.R. Passenger Corp. v. Boston & Maine Corp. , 503 U.S. 407, 419-20, 112 S.Ct. 1394, 118 L.Ed.2d 52 (1992). Treasury reasonably interpreted congressional intent in the 1986 amendments as permitting it to dispense with a comparable transaction analysis in the absence of actual comparable transactions. Its interpretation was all the more reasonable given, as we have discussed, that the arm's length standard has historically been understood as more fluid than Altera suggests. Because Chenery does not require agencies to provide "exhaustive, contemporaneous legal arguments to preemptively defend its action," its references to the 1986 amendments provide an adequate ground for its determination. Nat'l Elec. Mfrs. Ass'n v. U.S. Dep't of Energy , 654 F.3d 496, 515 (4th Cir. 2011). Altera contends further that the Commissioner's position is incompatible with Treasury's statements during the rulemaking process, when the Secretary claimed that the cost-sharing regulations were consistent with the arm's length standard (as well as the commensurate with income standard). This argument misinterprets Treasury's position. Treasury asserted then, and still asserts in this litigation, that using an internal method of reallocation is consistent with the arm's length standard because it attempts to bring parity to the tax treatment of controlled and uncontrolled taxpayers, as does comparison of comparable transactions when they exist. Treasury's position was also consistent with its White Paper, and Treasury's interpretation in the 1994 regulation of the arm's length standard as result-oriented, rather than method-oriented, with the goal of achieving tax parity. 26 C.F.R. § 1.482-1(b)(1) (1994). Altera's argument is founded on its belief that an arm's length analysis always must be method-oriented, and rooted in actual transactional analysis. But the question before us is not which view is superior; it is whether Treasury's position in 2003 was incompatible with its prior position in promulgating the 1994 and 1995 regulations. As we have discussed, it was clear in 1994 and 1995 that, in implementing the commensurate with income amendment, Treasury was moving away from a purely method-based, comparable-transaction view of the arm's length standard in attempting to achieve tax parity. Treasury's citation to the amendment, and its legislative history, demonstrates that its position was not inconsistent, and there is no basis under Chenery to invalidate it. 3 Altera also argues that Treasury did not adequately support its position that employee stock compensation is a cost, asserting that Treasury wrongfully ignored evidence that companies do not factor stock-based compensation into their pricing decisions. As an accounting matter in the past, this issue may have been disputed. Indeed, at one point, "[t]he debate on accounting for stock-based compensation ... became so divisive that it threatened the [Financial Accounting Standards] Board's future working relationship with some of its constituents." FINANCIAL ACCOUNTING STANDARDS BOARD, FINANCIAL ACCOUNTING FOUNDATION, ACCOUNTING FOR STOCK-BASED COMPENSATION: STATEMENT OF FINANCIAL ACCOUNTING STANDARDS NO . 123, at 25 (1995). However, as we will discuss, it is uncontroversial today. Since 1995, the Financial Accounting Standards Board has supported treating stock options as costs. Id. Treasury's rulemaking process was sufficient. Treasury articulated why treating stock-based compensation as a cost led to arm's length results. It first noted that stock-based compensation is a "critical element" of R&D costs for parties to a QCSA and noted that such compensation is "clearly related to the intangible development area." Compensatory Stock Options Under Section 482 (Preamble to Final Rule), 68 Fed. Reg. at 51,173. Logic supports these conclusions. Parties dealing at arm's length, as Treasury explained, would not "ignore" stock-based compensation if such compensation were a "significant element" of the compensation costs one party incurs and another party agrees to reimburse when developing high-profit intangibles. Id . Rather, "through bargaining," each party would ensure that the cost-sharing agreement is in its best interest, meaning that the parties will consider the internal costs of stock compensation without requiring the other party to recognize those costs. Id. Though commentators presented evidence of some transactions in which stock-based compensation was not a cost, this evidence provided little guidance because it did not concern parties to a QCSA developing high-profit intangibles. This out-of-context data did not require a different decision. In the absence of applicable evidence, Treasury's analysis provides a logical explanation of how treating stock-based compensation as a cost leads to arm's length results. In addition, as we have noted, generally accepted accounting principles supported Treasury's conclusion, and Treasury cited generally to "tax and other accounting principles" for its determination that there is a "cost associated with stock-based compensation." Compensatory Stock Options Under Section 482 (Proposed), 67 Fed. Reg. at 48,999. One such principle is that a distinction exists between the economic costs of stock compensation-which are debatable-versus the accounting costs-which are not. Because entities account for the cost of providing employee stock options, it is reasonable for Treasury to allocate that cost. In light of these fundamental understandings, Treasury's reference to "tax and other accounting principles" provides a solid foundation for the Commissioner's interpretation. Most notably, the Tax Code classifies stock-based compensation as a trade or business "expense." 26 U.S.C. § 162(a). And the challenged regulation cites the provision providing that this expense is a deductible expense. 26 C.F.R. § 1.482-7A(d)(2)(iii)(A) ("[T]he operating expense attributable to stock-based compensation is equal to the amount allowable ... as a deduction for Federal income tax purposes ... (for example, under [ 26 U.S.C. § 83(h) ] )."). The reference to the Tax Code's classifications in the regulation itself serves as yet another articulation of Treasury's reasoning, the reasonableness of which is made clear by the Tax Code's treatment of stock-based compensation as a cost. Though it could have been more specific, Treasury "articulated a rational connection" between its decision and these industry standards. County of Amador v. U.S. Dep't of Interior , 872 F.3d 1012, 1027 (9th Cir. 2017) (internal quotation marks omitted), cert. denied , --- U.S. ----, 139 S. Ct. 64, 202 L.Ed.2d 21 (2018). Presuming that Treasury was authorized to dispense with a comparability analysis, making the economic behavior