(1) any excess contributions under such plan for the plan year ending in such taxable year, and
(2) any excess aggregate contributions under the plan for the plan year ending in such taxable year.
The tax imposed by subsection (a) shall be paid by the employer.
For purposes of this section, the term “excess contributions” has the meaning given such term by sections 401(k)(8)(B), 408(k)(6)(C), and 501(c)(18).
For purposes of this section, the term “excess aggregate contribution” has the meaning given to such term by . For purposes of determining excess aggregate contributions under an annuity contract described in , such contract shall be treated as a plan described in subsection (e)(1).
(1) a plan described in which includes a trust exempt from tax under ,
(2) any annuity plan described in ,
(3) any annuity contract described in ,
(4) a simplified employee pension of an employer which satisfies the requirements of , and
(5) a plan described in .
(1) In general
No tax shall be imposed under this section on any excess contribution or excess aggregate contribution, as the case may be, to the extent such contribution (together with any income allocable thereto through the end of the plan year for which the contribution was made) is distributed (or, if forfeitable, is forfeited) before the close of the first 2½ months (6 months in the case of an excess contribution or excess aggregate contribution to an eligible automatic contribution arrangement (as defined in )) of the following plan year.
(2) Year of inclusion
Any amount distributed as provided in paragraph (1) shall be treated as earned and received by the recipient in the recipient’s taxable year in which such distributions were made.