SECTION 2. BACKGROUND AND

CHANGES

.01 Change in method of accounting defined.

(1) Section 1.446–1(e)(2)(ii)(a) of the Income Tax Regulations provides that a change in method of accounting includes a change in the overall plan of accounting for gross income or deductions, or a change in the treatment of any material item. A material item is any item that involves the proper time for the inclusion of the item in income or the taking of the item as a deduction. In determining whether a taxpayer’s accounting practice for an item involves timing, generally the relevant question is whether the practice permanently changes the amount of the taxpayer’s lifetime income. If the practice does not permanently affect the taxpayer’s lifetime income, but does or could change the taxable year in which income is reported, it involves timing and is therefore a method of accounting. See Rev. Proc. 91–31, 1991–1 C.B. 566.

(2) Although a method of accounting may exist under this definition without a pattern of consistent treatment of an item, a method of accounting is not adopted in most instances without consistent treatment. The treatment of a material item in the same way in determining the gross income or deductions in two or more con