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bulletin Internal Revenue›Rev. Proc. 90-63, 1990-2 C.B. 664, is

SECTION 2. BACKGROUND. . . . . . 19

Internal Revenue Bulletin 1997-33 · 2026-10-03 edition · updated 2026-10-04 · United States

.01 Change in method of accounting

defined. . . . . . . . . . . . . . . . . . . 19 .02 Securing permission to make a

method change . . . . . . . . . . . . 19 .03 Terms and conditions of a

method change . . . . . . . . . . . . 19 .04 No retroactive method

change . . . . . . . . . . . . . . . . . . . 19 .05 Method change with a § 481(a)

adjustment . . . . . . . . . . . . . . . . 19 (1) Need for adjustment . . . . . 19 (2) Adjustment period . . . . . . . 20 .06 Method change using a cut-off

method. . . . . . . . . . . . . . . . . . . 20 .07 Consistency and clear reflection

of income. . . . . . . . . . . . . . . . . 20 .08 Separate trades or businesses . 20 .09 Penalties. . . . . . . . . . . . . . . . . . 20 .10 Change made as part of an

.02 Year of change . . . . . . . . . . . . . 22 .03 Section 481(a) adjustment . . . . 22 .04 Section 481(a) adjustment

period. . . . . . . . . . . . . . . . . . . . 22 (1) In general. . . . . . . . . . . . . . 22 (2) Short period as a separate taxable year . . . . . . . . . . . . . . . 22 (3) Shortened or accelerated adjustment periods . . . . . . . . . . . 22 .05 NOL carryback limitation for

taxpayer subject to criminal investigation . . . . . . . . . . . . . . 23 .06 Change treated as initiated by the

taxpayer. . . . . . . . . . . . . . . . . . 24

examination. . . . . . . . . . . . . . . 20

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▸Contents — Internal Revenue Bulletin 1997-33

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