Formulary apportionment

Formulary apportionment, also known as unitary taxation, is a method of allocating profit earned (or loss incurred) by a corporation or corporate group to a particular tax jurisdiction in which the corporation or group has a taxable presence. It is an alternative to separate entity accounting, under which a branch or subsidiary within the jurisdiction is accounted for as a separate entity, requiring prices for transactions with other parts of the corporation or group to be assigned according to the arm's length standard commonly used in transfer pricing. In contrast, formulary apportionment attributes the corporation's total worldwide profit (or loss) to each jurisdiction, based on factors such as the proportion of sales, assets or payroll in that jurisdiction.[1] When applied to a corporate group, formulary apportionment requires combined reporting of the group's results. The parent and all of its subsidiaries are viewed as though they were a single entity (unitary combination), and the method is then also known as worldwide unitary taxation. In the US, most states have adopted water's edge combined reporting which restricts the taxable group to just US domestic corporations and excludes "overseas business organization", i.e., unitary foreign affiliates and foreign parents.

In domestic taxation

Formulary methods are used in both the United States and Canada to apportion income of corporations between the sub-national jurisdictions in which they operate. In many U.S. states formulary apportionment is also used to apportion the combined income of a related group of companies.[2] Tax in each US state is thus assessed based on the unitary combination of all related entities.[3] The related entities included in the unitary combination may be worldwide entities or only entities within the United States, depending on the state. The latter is known as water's edge combined reporting. Worldwide unitary combined reporting was first approved by the US Supreme Court in 1983 in Container Corp. v. Franchise Tax Board (CA) by a vote of 5-3 (Justice Stevens did not participate). The court re-visited worldwide combined reporting in 1994 in Barclays Bank v. Franchise Tax Board (CA) and Colgate-Palmolive v. Franchise Tax Board (CA) and again approved its use by California but this time by larger majorities. The votes were 7-2 and 9-0, respectively.

The use of formulary apportionment in the United States dates back to the late 19th century. At that time, there was no state or federal corporate income tax, but the states did assess property and capital stock taxes. With the growth of the transcontinental railroads, state taxation authorities faced companies which had not just immovable property (tracks) but also non-trivial movable property (rolling stock) operating across state lines. The property value of a company assessable to state tax was thus assessed by examining the proportion of value of railway lines within the state, and then taking that proportion of the company's total value (including the movable property) as the portion of value located within a certain state. When Wisconsin adopted a state income tax in 1911, it also used formulary apportionment (based on property, cost of manufacture, and sales), pointing to the impracticality of otherwise calculating separate accounts for companies operating in multiple states.[4]

By the mid-20th century, the "Massachusetts Formula" had become a commonly used standard of formulary apportionment. The formula placed an equal weight on three factors: group sales, payroll, and property within each jurisdiction.[1] Out of the forty-four states (plus one more jurisdiction, the District of Columbia) which imposed a corporate income tax in 1978, all but Iowa used the Massachusetts Formula.[5] Iowa's formula ignored payroll and property, looking solely at sales; the constitutionality of this formula was challenged in the Moorman case in Iowa, and it was held invalid by a trial court under the Due Process Clause of the Fourteenth Amendment as well as the Commerce Clause of Article One; however, the Iowa Supreme Court reversed the trial court in 1978. This marked the beginning of a trend towards increasing weight on sales at the expense of the other two factors; by 2004, there were only twelve states still using an equally weighted formula.[5]

In international taxation

Formulary apportionment is not used as a method of attributing profit between (rather than within) national tax jurisdictions.[6] The adoption of formulary apportionment has been advocated at various times since the 1970s. The matter has been hotly debated by OECD member states beginning in the 1970s.[7] In 2000 Joann Weiner and Charles E. McLure Jr. proposed the use of formulary apportionment within the European Union.[8] In 2001, the EU issued a communication advocating the use of formulary apportionment.[9] In 2007 Kimberley A. Clausing and Reuven Avi-Yonah suggested that the US Internal Revenue Service use formulary apportionment in the assessment of federal corporate income tax, believing it would lead to increased tax revenue in the face of a trend for multinational corporations to use transfer pricing to shift profits out of the US into low-tax countries.[10] None of these suggestions has been adopted.

Several US states allow, but do not mandate, that a corporate group include foreign entities for the purpose of assessing factors used in formulary apportionment ("worldwide unitary combination"). California, for example, began to accept worldwide unitary combination in the 1940s. However, its attempt to require such combination led to strong protests from US trading partners.[3] The UK-US double taxation treaty signed in 1975 included a provision to prohibit US states from "tak[ing] into account the income, deductions, receipts, or out-goings of a related enterprise" in the United Kingdom or any other country for the purpose of determining tax liability.[11] However, the US Senate, whose consent was required to ratify the treaty, rejected this provision,[3] and the treaty was amended by a protocol in 1979.[12] The Supreme Court explicitly held worldwide unitary combination as constitutional in separate cases in 1983 and 1994 (Barclays Bank PLC v. Franchise Tax Board).[13] In 1985 the United Kingdom passed retaliatory legislation which would have overridden the UK-US tax treaty and denied significant UK tax benefits to corporations headquartered in US states which applied worldwide unitary taxation.[14] [15] This and further pressure from foreign governments,[16] the executive branch and multinational corporations led US states to adopt a "water's edge" limitation on unitary combination, allowing taxpayers to decide for themselves whether or not to include foreign entities in their combined reporting.[3]

Criticism

Advocates claim that transfer pricing issues increase compliance costs, formulary apportionment reduces those costs and treating associated enterprises in a unitary fashion more closely reflects the underlying operating realities of multinational enterprises.[17]

Critics argue:

See also

Notes

References

Further reading

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