Connecticut General Statutes
Chapter 229 - Income Tax
Section 12-727. - Informational returns from persons making payments. Notice of changes in federal tax return. Filing amended returns.

(a) Returns of information shall be made and filed on or before the last day of January each year by any person making payment or crediting in the previous calendar year amounts of six hundred dollars or more, or ten dollars or more in the case of interest or dividends, to any person who may be subject to the tax imposed under this chapter. Such returns may be required of any person, including lessees or mortgagors of real or personal property, fiduciaries, employers and all officers and employees of this state, or of any municipal corporation or political subdivision of this state, having the control, receipt, custody, disposal or payment of dividends, interest, rents, salaries, wages, premiums, annuities, compensations, remunerations, pensions, gambling winnings, emoluments or other fixed or determinable gains, profits or income, except interest coupons payable to bearer. A duplicate of the statement as to tax withheld on wages, required to be furnished by an employer to an employee, shall constitute the return of information required to be made under this section with respect to such wages.

(b) (1) If the amount of a taxpayer's federal adjusted gross income, in the case of an individual, or federal taxable income, in the case of a trust or estate, reported on such taxpayer's federal income tax return for any taxable year is changed or corrected by the United States Internal Revenue Service or other competent authority, or as the result of a renegotiation of a contract or subcontract with the United States, the taxpayer shall provide notice of such change or correction in federal adjusted gross income or federal taxable income, as the case may be, to the commissioner by filing, on or before the date that is ninety days after the final determination of such change, correction or renegotiation, or as otherwise required by the commissioner, an amended return under this chapter and shall concede the accuracy of such determination or state wherein it is erroneous. The provisions of the preceding sentence shall also apply if an individual's computation of tax under Section 1341(a)(4) or (5) of the Internal Revenue Code is changed or corrected by the United States Internal Revenue Service or other competent authority. The commissioner may redetermine and the taxpayer shall be required to pay the tax for any taxable year affected, regardless of any otherwise applicable statute of limitations.
(2) Any taxpayer filing an amended federal income tax return with the United States Internal Revenue Service or other competent authority shall also file, on or before the date that is ninety days after the final determination is made on such amended return by the Internal Revenue Service or other competent authority, an amended return under this chapter and shall give such information as the commissioner may require. The commissioner shall treat any such amended return under this chapter reporting a tax overpayment as containing sufficient required information after proof of such final determination on such amended federal income tax return by the Internal Revenue Service or other competent authority is submitted to the commissioner. The commissioner may redetermine, and the taxpayer shall be required to pay the tax for any taxable year affected, regardless of any otherwise applicable statute of limitations.
(3) The commissioner may by regulation prescribe such exceptions to the requirements of this subsection as he deems appropriate.
(June Sp. Sess. P.A. 91-3, S. 78, 168; May Sp. Sess. P.A. 92-5, S. 20, 37; P.A. 98-244, S. 31, 35; P.A. 00-174, S. 42, 83; P.A. 10-188, S. 13; P.A. 17-147, S. 38.)
History: June Sp. Sess. P.A. 91-3, S. 78, effective August 22, 1991, and applicable to taxable years of taxpayers commencing on or after January 1, 1991; May Sp. Sess. P.A. 92-5 amended Subsec. (a) to make a minor change, effective June 19, 1992, and applicable to taxable years of taxpayers commencing on or after January 1, 1992; P.A. 98-244 amended Subsec. (b) to allow commissioner to redetermine and to require the taxpayer to pay the tax for any affected tax year regardless of other statute of limitation provisions and required that the taxpayer file an amended return, effective June 8, 1998, and applicable to taxable years commencing on or after January 1, 1998; P.A. 00-174 amended Subdiv. (b)(1) to modify the requirement for notice of a change in a taxpayer's federal adjusted gross income or computation of tax, effective May 26, 2000, and applicable to returns for taxable years commencing on or after January 1, 1999; P.A. 10-188 amended Subsec. (b)(2) to change date for filing amended return from 90 days after filing with Internal Revenue Service to 90 days after final determination on amended return is made by Internal Revenue Service or other authority, and to add provision re amended return treated as containing sufficient information after submission of proof of such final determination, effective June 7, 2010, and applicable to taxable years commencing on or after January 1, 2010; P.A. 17-147 amended Subsec. (a) to replace provision allowing commissioner to adopt regulations requiring returns to be made and filed on or before the last day of February each year with provision requiring returns of information to be made and filed on or before the last day of January each year, replaced “any calendar year” with “the previous calendar year”, deleted provision re regulations providing standards for filing on magnetic media or other machine-readable form, and made a technical change, effective July 7, 2017, and applicable to taxable years commencing on or after January 1, 2017.

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