Example (1). X, whose taxable year begins on February 1, files, its return based on the accrual method of accounting. X has continuously accrued and deducted for income tax purposes contingent amounts of vacation pay, pursuant to I.T. 3956. Pursuant to section 463 and these regulations, in order for X to continue accruing and deducting its vacation pay amounts, X must elect to account for vacation pay under section 463 by attaching the election to its timely filed return for its taxable year ending on January 31, 1975, or if X has already filed such return by July 21, 1975, without such election, by filing the election statement with an amended return by July 21, 1975. If X does not make the election under section 463, X will be treated as having initiated a change in its method of accounting for vacation pay in its taxable year ending on January 31, 1973.
Example (2). Y, a calendar year taxpayer files its returns based on the accrual method of accounting. Y deducted its vacation pay amounts only when paid since such amounts were contingent when earned and Y was not entitled to the benefits of I.T. 3956, Y may elect for its taxable year ending on December 31, 1974, to deduct certain amounts with respect to contingent vacation pay which were not otherwise deductible, by filing an election pursuant to these regulations with its timely filed income tax return for such year or if such return was already filed by [insert date 90 days after publication of this document as a Treasury decision], without such election, by filing the election with an amended return filed by July 21, 1975. If Y does not make the election for its taxable year ending on December 31, 1974, Y may make the election with respect to any subsequent taxable year by filing an election with its return for such year.
26 C.F.R. §301.9100-16T