CONNECTICUT STATUTES AND CODES
               		Sec. 12-647. Payment of tax. Penalty for late payment. Extensions. Changes in federal gift tax. Overpayments.
               		
               		
               	 	
               	 	               	 	
               	 	
               	 	
               	 		
      Sec. 12-647. Payment of tax. Penalty for late payment. Extensions. Changes 
in federal gift tax. Overpayments. (a) The tax imposed under this chapter shall be due 
and payable by the donor no later than April fifteenth following the close of the calendar 
year during which the gift was made and shall be payable to the Commissioner of Revenue Services. The return required under section 12-644 shall accompany such payment. 
Where a gift is made during the calendar year in which the donor dies, the last date for 
paying the tax required under this chapter shall be the last date, including extensions, 
for filing the estate tax return under chapter 217 with respect to such donor. If any person 
fails to pay the amount of tax reported to be due on such return within the time specified 
under the provisions of this section, there shall be imposed a penalty equal to ten per 
cent of such amount due and unpaid or fifty dollars, whichever is greater. Such amount 
shall bear interest at the rate of one per cent per month or fraction thereof, from the due 
date of such return.
      (b) The commissioner for good cause may extend the time for making any return 
and paying any amount required to be paid under this chapter if a written request therefor 
is filed with the commissioner together with a tentative return which must be accompanied by a payment of the tax, which shall be estimated in such tentative return, on or 
before the last day for filing the return. Any person to whom an extension is granted 
shall pay, in addition to the tax, interest at the rate of one per cent per month or fraction 
thereof from the date on which the tax would have been due without the extension until 
the date of payment.
      (c) If the amount of a taxpayer's taxable gifts, for federal gift tax purposes, reported 
on such taxpayer's federal gift tax return for any calendar year, is changed or corrected 
by the United States Internal Revenue Service or other competent authority, the taxpayer 
shall report such change or correction in federal taxable gifts within ninety days after 
the final determination of such change or correction, and shall concede the accuracy of 
such determination or state wherein it is erroneous. Any taxpayer filing an amended 
federal gift tax return shall also file within ninety days thereafter an amended return 
under this chapter and shall give such information as the commissioner may require. 
The time for filing such report or amended return may be extended by the commissioner 
upon due cause shown. Notwithstanding any limitation of time in this chapter, if, upon 
examination, the commissioner finds that such taxpayer is liable for the payment of an 
additional tax, he shall, within a reasonable time from the receipt of such report or 
amended return, notify such taxpayer of the amount of such additional tax, together with 
interest thereon computed at the rate of one per cent per month or fraction thereof from 
the date when the original tax became due and payable. Within thirty days of the mailing 
of such notice, the taxpayer shall pay the commissioner the amount of such additional 
tax and interest. If, upon examination of such report or amended return and related 
information, the commissioner finds that the taxpayer has overpaid the tax due the state, 
the commissioner shall certify the amount of such overpayment, together with interest 
as provided in subsection (d) of this section, to the Comptroller, and such amount shall 
be paid to the taxpayer by the State Treasurer upon order of the Comptroller.
      (d) Whenever there is an overpayment of the tax imposed by this chapter, the commissioner shall return to the taxpayer the overpayment, which shall bear interest at the 
rate of two-thirds of one per cent per month or fraction thereof, said interest commencing 
from the due date of the return required under this chapter, or the date of payment, 
whichever is later.
      (June Sp. Sess. P.A. 91-3, S. 143, 168; May Sp. Sess. P.A. 92-5, S. 34, 37; P.A. 94-5, S. 1, 2; P.A. 95-26, S. 35, 52; 
P.A. 06-194, S. 21.)
      History: June Sp. Sess. P.A. 91-3, S. 143, effective August 22, 1991, and applicable to gifts made on or after September 
1, 1991; May Sp. Sess. P.A. 92-5 amended Subsec. (a) to add provisions regarding later payments and added Subsecs. (b) 
and (c); P.A. 94-5 amended Subsec. (a) re date of filing gift tax return when donor dies in year in which gift is made, 
effective April 7, 1994, and applicable to taxable years commencing or after January 1, 1994; P.A. 95-26 amended Subsecs. 
(a), (b) and (c) to lower 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. 06-194 amended Subsec. (a) by 
requiring an estate tax return, rather than a gift tax return, from a deceased donor, added Subsec. (d) re payment of interest 
on overpayment of taxes, and made a conforming change in Subsec. (c), effective June 9, 2006, and applicable to taxes 
due for calendar years commencing on or after January 1, 2005.