§ 1.30D-1. Credit for new clean vehicles.

¶(1) Business credit treated as part of general business credit. Section 30D(c)(1) requires that so much of the section 30D credit that would be allowed under section 30D(a) for any taxable year (determined without regard to section 30D(c) and this paragraph (b)) that is attributable to a depreciable vehicle must be treated as a general business credit under section 38 of the Code that is listed in section 38(b)(30) for such taxable year (and not allowed under section 30D(a)). In the case of a depreciable vehicle the use of which is 50 percent or more business use in the taxable year such vehicle is placed in service, the section 30D credit that would be allowed under section 30D(a) for that taxable year (determined without regard to section 30D(c) and this paragraph (b)) that is attributable to such depreciable vehicle must be treated as a general business credit under section 38(b)(30) for such taxable year (and not allowed under section 30D(a)). See paragraph (b)(2) of this section for rules applicable in the case of a depreciable vehicle the use of which is less than 50 percent business use in the taxable year such vehicle is placed in service. See paragraph (b)(3) of this section for rules applicable to a section 30D credit allowed under section 30D(a) pursuant to section 30D(c)(2) or paragraph (b)(2)(ii) or (b)(3) of this section.

¶(2) Apportionment of section 30D credit. Unless the taxpayer has elected to transfer the credit pursuant to section 30D(g) and § 1.30D-5(d), in the case of a depreciable vehicle the business use of which is less than 50 percent of a taxpayer's total use of the vehicle for the taxable year in which the vehicle is placed in service, the taxpayer's section 30D credit for that taxable year with respect to that vehicle must be apportioned as follows:

¶(3) Personal credit limited based on tax liability. Section 26 of the Code limits the aggregate amount of credits allowed to a taxpayer by subpart A of part IV of subchapter A of chapter 1 (subpart A) based on the taxpayer's tax liability. Under section 26(a), the aggregate amount of credits allowed to a taxpayer by subpart A cannot exceed the sum of the taxpayer's regular tax liability (as defined in section 26(b)) for the taxable year reduced by the foreign tax credit allowable under section 27 of the Code, and the alternative minimum tax imposed by section 55(a) of the Code for the taxable year. Section 30D(c)(2) provides that the section 30D credit allowed under section 30D(a) for any taxable year (determined after application of section 30D(c)(1) and paragraphs (b)(1) and (2) of this section) is treated as a credit allowable under subpart A for such taxable year, and the section 30D credit allowed under section 30D(a) is therefore subject to the limitation imposed by section 26.