The commissioner may for reasonable cause extend the time for the filing of any return, statement or other document due or required under this chapter and the payment of tax due pursuant to this chapter in accordance with regulations adopted in accordance with chapter 54. Said commissioner may require the filing of a tentative return and the payment of the tax reported to be due thereon in connection with such extension. Any additional tax which may be found to be due on the filing of a return, statement or other document as allowed by such extension shall bear interest at the rate of one per cent per month or fraction thereof from the original due date of such tax to the date of actual payment. Notwithstanding the provisions of section 12-735, no penalty shall be imposed on account of any failure to pay the amount of tax reported to be due on a return, statement or other document within the time specified under the provisions of this chapter if the excess of the amount of tax shown on the return, statement or other document over the amount of tax paid on or before the original due date of such return, statement or other document is no greater than ten per cent of the amount of tax shown on such return, statement or other document, and any balance due shown on such return, statement or other document is remitted with such return, statement or other document on or before the extended due date of such return, statement or other document.

(June Sp. Sess. P.A. 91-3, S. 74, 168; P.A. 95-26, S. 39, 52; P.A. 98-244, S. 30, 35; P.A. 99-121, S. 22, 28; P.A. 00-174, S. 41, 83.)

History: June Sp. Sess. P.A. 91-3, S. 74, effective August 22, 1991, and applicable to taxable years of taxpayers commencing on or after January 1, 1991; P.A. 95-26 lowered interest rate from 1.25% to 1%, effective July 1, 1995, and applicable to taxes due and owing on or after July 1, 1995, whether or not those taxes first became due before said date; P.A. 98-244 removed penalty when at least 90% of the tax shown on the return was paid by the original due date and any balance was paid on or before the extended due date of the return, effective June 8, 1998, and applicable to taxable years commencing on or after January 1, 1998; P.A. 99-121 provided that balance is to be remitted with return in order to avoid penalty, effective June 3, 1999, and applicable to taxable years commencing on or after January 1, 1999; P.A. 00-174 added requirement for payment to be received on or before the extended due date in order to avoid penalty, effective May 26, 2000, and applicable to returns for taxable years commencing January 1, 2000.