*374 OPINION
In this appeal from a grant of summary judgment to the government, we are presented with a case of first impression regarding the validity of the Treasury Department’s so-called “check-the-box” regulations, 26 C.F.R. §§ 301.7701-1 to 301.7701-3, promulgated in 1996 to simplify the classification of business entities for tax purposes.
The plaintiff, Frank Littriello, was the sole owner of several Kentucky limited liability companies (LLCs), the operation of which resulted in unpaid federal employment taxes totaling $1,077,000. Because Littriello was the sole member of the LLCs and had not elected to have the businesses treated as “associations”
(ie.,
corporations) under Treasury Regulations §§ 301.7701 — 3(a) and (c), the LLCs were “disregarded” as separate taxable entities and, instead, were treated for federal tax purposes as sole proprietorships under Treasury Regulation § 301.7701 — 3(b)(l)(ii). When Littriello, as sole proprietor, failed to pay the outstanding employment taxes, the IRS filed notices of determination and, eventually, notified him of its intent to levy on his property to enforce previously filed tax liens. Littriello responded by initiating complaints for judicial review in district court, contending that the regulations in question (1) exceed the authority of the Treasury to issue regulatory interpretations of the Internal Revenue Code; (2) conflict with the principles enunciated by the Supreme Court in
Morrissey v. Commissioner,
PROCEDURAL AND FACTUAL BACKGROUND
Frank Littriello was the owner of several business entities, including Kentuckiana Healthcare, LLC; Pyramid Healthcare Wise. I, LLC; and Pyramid Healthcare Wise. II, LLC. Each of these businesses was organized as a limited liability company under Kentucky law, with Littriello as the sole member. He did not elect to have them treated as corporations for federal tax purposes and, as a result, none of the LLCs was subject to corporate income taxation. For the tax years in question, Lit-triello reported his income from the three businesses on Schedule C of his individual income tax return — the schedule on which the profits and losses of a sole proprietorship are reported. Because the LLCs were “disregarded entities” under the pertinent tax regulations, and not corporate entities, the IRS assessed Littriello for the full amount of the unpaid employment taxes for 2000-2002.
In January 2003, the Internal Revenue Service informed Littriello that it intended to enforce the liens that had been filed against his property as security for the unpaid taxes. In response, Littriello re *375 quested a hearing, which produced a determination by the IRS Appeals Office that Littriello was individually liable as a sole proprietor under Treasury Regulation § 301.7701 — 3(b)(l)(ii), as a result of his failure to elect to be treated as a corporation.
Littriello filed suit in district court contesting the finding of liability and contending, among other things, that Treasury Regulations §§ 301.7701-1-301.7701-3 (the “check-the-box regulations”) were invalid. Relying on Chevron, the district court rejected Littriello’s challenge to the regulations. The district court upheld the assessment against Littriello, ruling that the governing provisions of the Internal Revenue Code, found in 26 I.R.C. § 7701, were ambiguous and that the IRS’s regulatory interpretation, including the check-the-box provisions, was “a reasonable response to the changes in the state law industry of business formation.” This appeal followed.
DISCUSSION
The Treasury Regulations at the heart of this litigation, 26 C.F.R. §§ 301.7701-1-301.7701-3, were issued in 1996 to clarify the rules for determining the classification of certain business entities for federal tax purposes, replacing the so-called “Kintner regulations.” 2 The earlier regulations had been developed to aid in classifying business associations that were not incorporated under state incorporation statutes but that had certain characteristics common to corporations and were thus subject to taxation as corporations under the federal tax code. Corporate income is, of course, subject to “double taxation” — once at the corporate level under I.R.C. § 11(a) and again at the individual-shareholder level, pursuant to I.R.C. § 61(a)(7). In contrast, partnership income benefits from “pass-through” treatment — it is taxed once, not at the business level but only after it passes through to the individual partners and is taxed as income to them, pursuant to I.R.C. §§ 701-777. A sole proprietorship — in which a single individual owns all the assets, is liable for all debts, and operates in an individual capacity — is also taxed only once.
The Kintner regulations built on an even earlier standard, set out by the Supreme Court in
Morrissey,
in which the Court addressed the tax code provision that included an “association” within the definition of a corporation, in order to determine whether a “business trust” qualified as an “association” for federal tax purposes.
Meant to clarify some of the confusion created in the wake of Morrissey, the Kintner regulations developed four essential characteristics of a corporate entity and provided that an unincorporated business would be treated as an “association” — and, therefore, as a corporation rather than a partnership — -if it had three of those four identifying characteristics. See former Treas. Reg. §§ 301.7701-2(a)(1) and (3). The Kintner regulations, adequate to provide a measure of predict *376 ability at the time of their promulgation in 1960 and for several decades afterward, proved less than adequate to deal with the new hybrid business entities — limited liability companies, limited liability partnerships, and the like — developed in the last years of the last century under various state laws. These unincorporated business entities had the characteristics of both corporations and partnerships, combining ease of management with limited liability, and were increasingly structured with the Kintner regulations in mind, in order to take advantage of whatever classification was thought to be the most advantageous. The “Kintner exercise” required skillful lawyering by business entities and case-by-case review by the IRS; it quickly came to be seen as squandering of resources on both sides of the equation.
As a result, the IRS undertook to replace the Kintner regulations with a more practical scheme, consistent with existing tax statutes and with a new provision in I.R.C. § 7704 treating publicly-traded entities as corporations, regardless of their structure or status under state law. As to the unincorporated business associations not covered by § 7704, including the newly emerging hybrid entities, the IRS proposed to allow an election by the taxpayer to be treated as a corporation or, in the absence of such an election, to be “disregarded,” ie., deemed a partnership (for entities with multiple members) or a sole proprietorship (for those with a single member). After a period for notice and comment, the new regulations were issued and became effective on January 1, 1997, implementing the definitional provisions of §§ 7701(a)(2) and (3). The regulations were particularly helpful with regard to the tax status of the new hybrids, because the hybrid entities were not, and still are not, explicitly covered by the definitions set out in § 7701. What was avoided by the resulting “cheek-the-box” provisions was the necessity of forcing those hybrids to jump through the Kintner regulation “hoops” in order to achieve a desired' — and perfectly legal — classification for federal tax purposes.
The district court noted that Littriello’s unincorporated businesses had not elected to be treated as corporations under the new regulations and were, therefore, deemed by the IRS to be sole proprietor-ships. This result provided Littriello with a major tax advantage: his income from the healthcare facilities would be taxed to him only once. But, of course, it also meant that he would be responsible not only for taxes on business income but also for those federal employment taxes that were required by statute and that had not been paid for the years in question.
The district court found that the regulations were a reasonable interpretation by the IRS of a tax statute (I.R.C. § 7701) that was otherwise ambiguous, upheld them under Chevron analysis, after noting that it was apparently the first court asked to review those regulations, and held Lit-triello individually liable for the amounts assessed by the IRS. In doing so, the district court rejected Littriello’s arguments that the Secretary of the Treasury had exceeded his authority in promulgating the entity-classification regulations, that the regulations are invalid under Mor-rissey, and that they impermissibly altered the legal status of his state-law-created LLC. Before this court, Littriello also contends that the regulations do not apply to employment taxes, an argument that depends, at least in part, on proposed amendments to the entity-classification regulations that were not circulated until after the appeal in this case was filed.
A. Chevron Analysis
The first two arguments raised by Littriello are intertwined. He contends
*377
that the statute underlying the “check-the-box” regulations is unambiguous and that the district court’s invocation of
Chevron
was, therefore, erroneous. Under
Chevron,
a court reviewing an agency’s interpretation of a statute that it administers must first determine “whether Congress has directly spoken to the precise question at issue.”
Littriello argues, first, that
Chevron
has been modified by the Supreme Court’s recent decision in
National Cable & Telecommunications Ass’n v. Brand X Internet Services,
Although the plaintiffs Morrissey argument is not a model of clarity, it seems to depend on the proposition that the terms defined in § 7701 (“corporation,” “association,” “partnership,” etc.) are not ambiguous but “[have been] in common usage in Anglo American law for centuries” and, as a corollary, that “Morrissey provides a test of identification [that is itself] unambiguous.” Hence, the argument goes, it is the “check-the-box” regulations that “render whole portions of the Internal Revenue Code ambiguous” and are therefore “in direct conflict with the decision of the Supreme Court in Morrissey ” in the absence of Congressional amendment to § 7701.
It is unnecessary, in our judgment, to engage in an exegesis of
Chevron
here. The perimeters of that opinion and its directive to courts to give deference to an agency’s interpretation of statutes that the agency is entrusted to administer and to the rules that govern implementation, as long as they are reasonable, are clear, and are clearly applicable in this case. Moreover, the argument that
Morrissey
has somehow cemented the interpretation of § 7701 in the absence of subsequent Congressional action or Supreme Court modification is refuted by
Chevron,
in which the Court suggested that an agency’s interpretation of a statute, as reflected in the regulations it promulgates, can and must be revised to meet changing circumstances.
See Chevron,
In short, we agree with the district court’s conclusions: that § 7701 is ambiguous when applied to recently emerging hybrid business entities such as the LLCs involved in this case; that the Treasury regulations developed to fill in the statutory gaps when dealing with such entities are eminently reasonable; that the “check-the-box” regulations are a valid exercise of the agency’s authority in that respect; that the plaintiffs failure to make an election under the “check-the-box” provision dictates that his companies be treated as disregarded entities under those regulations, thereby preventing them from being taxed as corporations under the Internal Revenue Code; and that he is, therefore, liable individually for the employment taxes due and owing from those businesses because they constitute sole proprietorships under § 7701, and he is the proprietor.
B. Status Under State Law
Citing
United States v. Galletti
The same flaw prevents application of the ruling in
People Place Auto Hand Carwash, LLC v. Commissioner,
*379
The federal government has historically disregarded state classifications of businesses for some federal tax purposes. In
Hecht v. Malley,
C. Proposed Amendments to the Regulations
In October 2005, after the notice of appeal in this case had been filed, the IRS circulated a notice of proposed rule-making that set out possible amendments to the entity-classification regulations that would shelter individuals similarly situated to Littriello for unpaid employment taxes. The proposed amendments would treat “single-owner eligible entities that currently are disregarded as entities separate from their owners for federal tax purposes ... as separate entities for employment tax and related reporting requirements.” Disregarded Entities; Employment and Excise Taxes, 70 Fed.Reg. 60475 (proposed Oct. 18, 2005) (to be codified at 26 C.F.R. pts. 1.301). Thus, if the amendments had been in place when the tax deficiencies in this case arose, single-member LLCs such as Littriello’s would be treated as separate entities for employment tax purposes, although not for other federal tax purposes.
Littriello argues that the proposed amendments should be taken as reflecting current Treasury Department policy and applied to his case. But, it appears that the changes contemplated by the amendments are intended to simplify employment tax collection procedures and do not represent an endorsement of the position that Littriello has advocated in this litigation. As the Supreme Court noted in
Commodity Futures Trading Commission v. Schor,
It goes without saying that a proposed regulation does not represent an agency’s considered interpretation of its statute and that an agency is entitled to consider alternative interpretations before settling on the view it considers most sound. Indeed, it would be antithetical to the purposes of the notice and comment provisions of the Administrative Procedure Act, 5 U.S.C. § 553, to tax an agency with “inconsistency” whenever it circulates a proposal that it has not firmly decided to put into effect and that it subsequently reconsiders in response to public comment.
Id.
at 845,
*380 CONCLUSION
For the reasons set out above, we reject the plaintiffs challenge to the “check-the-box” regulations and AFFIRM the district court’s grant of summary judgment to the defendant.
