SECTION 7. AUDIT PROTECTION
Internal Revenue Bulletin 1999-52 · 2026-10-03 edition · updated 2026-10-04 · United States
FOR TAXABLE YEARS PRIOR TO YEAR OF CHANGE . . . . . . . . . . . . . 50
made improperly . . . . . . . . .51 (2) Change in sub-method . . . . .51 (3) Prior year Service-initiated
change . . . . . . . . . . . . . . . . .51 (4) Criminal investigation . . . . .52
.01 In general . . . . . . . . . . . . . . . . .50 .02 Exceptions . . . . . . . . . . . . . . . .51
(1) Change not made or
.01 Change in method of accounting
defined . . . . . . . . . . . . . . . . . . .10 .02 Securing permission to make a
method change . . . . . . . . . . . . .12 .03 Terms and conditions of a method
change . . . . . . . . . . . . . . . . . . .12 .04 No retroactive method
change . . . . . . . . . . . . . . . . . . .13 .05 Method change with a § 481(a)
adjustment . . . . . . . . . . . . . . . .13 (1) Need for adjustment . . . . . . .13 (2) Adjustment period . . . . . . . .14 .06 Method change using a cut-off
method . . . . . . . . . . . . . . . . . . . 15 .07 Consistency and clear reflection
of income . . . . . . . . . . . . . . . . . 16 .08 Separate trades or businesses . 16 .09 Penalties . . . . . . . . . . . . . . . . . 17 .10 Change made as part of an
examination . . . . . . . . . . . . . . .17 .11 Significant changes . . . . . . . . .18
adjustment periods . . . . . . . .32 .05 NOL carryback limitation
for taxpayer subject to criminal investigation . . . . . . . . . . . . . . .38 .06 Change treated as
(1) Under examination . . . . . . . .28 (2) Before an appeals office . . . .28 (3) Before a federal court . . . . . . 29 (4) Consolidated group
member . . . . . . . . . . . . . . . . .29 (5) Partnerships and
S corporations . . . . . . . . . . . .29 (6) Prior change . . . . . . . . . . . . .30 (7) Section 381(a) transaction . .30 (8) Final year of trade
or business. . . . . . . . . . . . . . .30 .03 Nonautomatic changes . . . . . .30
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