Other definitions and special rules

The maximum deduction under subsection (b) shall be computed separately for each individual, and this section shall be applied without regard to any community property laws.

For purposes of this section, a taxpayer shall be deemed to have made a contribution to an individual retirement plan on the last day of the preceding taxable year if the contribution is made on account of such taxable year and is made not later than the time prescribed by law for filing the return for such taxable year (not including extensions thereof).

For purposes of this title, any amount paid by an employer to an individual retirement plan shall be treated as payment of compensation to the employee (other than a self-employed individual who is an employee within the meaning of section 401(c)(1)) includible in his gross income in the taxable year for which the amount was contributed, whether or not a deduction for such payment is allowable under this section to the employee.

(A) In general If for the taxable year the maximum amount allowable as a deduction under this section for contributions to an individual retirement plan exceeds the amount contributed, then the taxpayer shall be treated as having made an additional contribution for the taxable year in an amount equal to the lesser of— (i) the amount of such excess, or (ii) the amount of the excess contributions for such taxable year (determined under section 4973(b)(2) without regard to subparagraph (C) thereof).

(B) Amount contributed For purposes of this paragraph, the amount contributed— (i) shall be determined without regard to this paragraph, and (ii) shall not include any rollover contribution.

(C) Special rule where excess deduction was allowed for closed year Proper reduction shall be made in the amount allowable as a deduction by reason of this paragraph for any amount allowed as a deduction under this section for a prior taxable year for which the period for assessing deficiency has expired if the amount so allowed exceeds the amount which should have been allowed for such prior taxable year.

For purposes of subsections (b)(1)(B) and (c), the amount of compensation includible in an individual’s gross income shall be determined without regard to section 112.

For election not to deduct contributions to individual retirement plans, see section 408( o )(2)(B)(ii).