(a) In general. For regulations under section 6402 of special application to credits or refunds of employment taxes, see §§ 31.6402(a)-2, 31.6402(a)-3, and 31.6414-1. For regulations under section 6402 of general application to credits or refunds, see §§ 301.6402-1 and 301.6402-2. For provisions relating to adjustments without interest of overpayments of taxes under the Federal Insurance Contributions Act or the Railroad Retirement Tax Act or income tax withholding, see §§ 31.6413(a)-1 and 31.6413(a)-2.
(b) Period of limitation. For the period of limitation upon credit or refund of taxes imposed by the Internal Revenue Code of 1954, see § 301.6511(a)-1 of this chapter (Regulations on Procedure and Administration). For the period of limitation upon credit or refund of any tax imposed by the Internal Revenue Code of 1939, see the regulations applicable with respect to such tax.
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