Section 79 - Interest on overpayment1.General.-Notwithstanding the provisions of section three-a of the general municipal law, interest shall be allowed and paid as follows at the rate set by the commissioner of finance pursuant to section eighty-seven, or, if no rate is set, at the rate of six percent per annum upon any overpayment in respect of the tax imposed by any of the named parts:(a) from the date of the overpayment to the due date of an amount against which a credit is taken;(b) from the date of the overpayment to a date (to be determined by the commissioner of finance) preceding the date of a refund check by not more than thirty days, whether or not such refund check is accepted by the taxpayer after tender of such check to the taxpayer. The acceptance of such check shall be without prejudice to any right of the taxpayer to claim any additional overpayment and interest thereon.(c) late returns. Notwithstanding paragraph (a) or (b) of this subdivision, in the case of a return of tax which is filed after the last date prescribed for filing such return (determined with regard to extensions), no interest shall be allowed or paid for any day before the date on which the return is filed. No interest shall be allowed or paid if the amount thereof is less than one dollar.
2.Advance payment of tax and estimated tax.-The provisions of subdivisions eight and nine of section seventy-eight applicable in determining the date of payment of tax for purposes of determining the period of limitations on credit or refund, shall be applicable in determining the date of payment for purposes of this section.3.Tax refund within three months of due date of tax.-If any overpayment of tax imposed by any of the named parts is refunded within three months after the last date prescribed (or permitted by extension of time) for filing the return of such tax or within three months after the return was filed, whichever is later, no interest shall be allowed under this section on such overpayment.4.Refund of tax caused by carryback.-For purposes of this section, if any overpayment of tax imposed by part two of this title results from a carryback of a net operating loss, such overpayment shall be deemed not to have been made prior to the filing date for the taxable year in which such net operating loss arises. Such filing date shall be determined without regard to extensions of time to file. For purposes of subdivision three of this section any overpayment described herein shall be treated as an overpayment for the loss year and such subdivision shall be applied with respect to such overpayment by treating the return for the loss year as not filed before claim for such overpayment is filed. The term "loss year" means the taxable year in which such loss arises.5.No interest until return in processible form.-(a) For purposes of subdivisions one and three of this section, a return shall not be treated as filed until it is filed in processible form.(b) For purposes of paragraph (a) of this subdivision, a return is in a processible form if-(A) such return is filed on a permitted form, and(B) such return contains-(i) the taxpayer's name, address, and identifying number and the required signatures, and(ii) sufficient required information (whether on the return or on required attachments) to permit the mathematical verification of tax liability shown on the return.6.Cross reference.-For provision terminating interest after failure to file a report or amended return under part two or part three, see subdivision three of section seventy-eight.N.Y. General City Model Law § 79