26 U.S.C. § 471
General rule for inventories
Whenever in the opinion of the Secretary the use of inventories is necessary in order clearly to determine the income of any taxpayer, inventories shall be taken by such taxpayer on such basis as the Secretary may prescribe as conforming as nearly as may be to the best accounting practice in the trade or business and as most clearly reflecting the income.
For purposes of this subsection, the term “applicable financial statement” has the meaning given the term in section 451(b)(3).
In the case of any taxpayer which is not a corporation or a partnership, the gross receipts test of section 448(c) shall be applied in the same manner as if each trade or business of such taxpayer were a corporation or partnership.
Any change in method of accounting made pursuant to this subsection shall be treated for purposes of section 481 as initiated by the taxpayer and made with the consent of the Secretary.
For rules relating to capitalization of direct and indirect costs of property, see section 263A.
2017—Subsecs. (c), (d). Pub. L. 115–97 added subsec. (c) and redesignated former subsec. (c) as (d).
1997—Subsecs. (b), (c). Pub. L. 105–34 added subsec. (b) and redesignated former subsec. (b) as (c).
1986—Pub. L. 99–514 designated existing provisions as subsec. (a) and added subsec. (b).
1976—Pub. L. 94–455 struck out “or his delegate” after “Secretary” wherever appearing.
Amendment by Pub. L. 115–97 applicable to taxable years beginning after
Pub. L. 105–34, title IX, § 961(b)(1),
If any interest costs incurred after
Amendment by Pub. L. 99–514 applicable to costs incurred after
Pub. L. 105–34, title IX, § 961(b)(2),
Pub. L. 97–34, title II, § 238,