CONNECTICUT STATUTES AND CODES
               		Sec. 12-719. Filing of returns. Returns for partnerships, S corporations and pass-through entities. Returns for nonresident athletes of professional teams.
               		
               		
               	 	
               	 	               	 	
               	 	
               	 	
               	 		
      Sec. 12-719. Filing of returns. Returns for partnerships, S corporations and 
pass-through entities. Returns for nonresident athletes of professional teams. (a) 
The income tax return required under this chapter shall be filed on or before the fifteenth 
day of the fourth month following the close of the taxpayer's taxable year. A person 
required to make and file a return shall, without assessment, notice or demand, pay any 
tax due thereon to the Commissioner of Revenue Services on or before the date fixed 
for filing such return, determined without regard to any extension of time for filing the 
return. The commissioner shall prescribe by regulation the place for filing any return, 
declaration, statement or other document required pursuant to this chapter and for the 
payment of any tax.
      (b) (1) With respect to each of its nonresident partners, each partnership doing 
business in this state or having income derived from or connected with sources within 
this state shall, for each taxable year, make payment to the commissioner as provided 
in subdivision (2) of this subsection.
      (2) (A) Any payment under this subdivision shall be in an amount equal to the 
highest marginal tax rate in effect under section 12-700 for the taxable year multiplied 
by the subject partner's distributive share of (i) such partnership's separately and nonseparately computed items, as described in Section 702(a) of the Internal Revenue Code, 
to the extent derived from or connected with sources within this state, as determined 
under this chapter, and (ii) any modification described in section 12-701 which relates 
to an item of such partnership's income, gain, loss or deduction, to the extent derived 
from or connected with sources within this state, as determined under this chapter. Any 
amount paid by a partnership to this state with respect to any taxable year pursuant to 
this subdivision shall be considered to be a payment by the partner on account of the 
income tax imposed on the partner for such taxable year pursuant to this chapter. A 
partnership shall not be liable to, and shall be entitled to recover a payment made pursuant 
to this subdivision from, the partner on whose behalf the payment was made. Any payment for a taxable year shall be made on or before the date the annual return for such 
taxable year is required to be filed pursuant to section 12-726. The partnership shall 
furnish, on a form prescribed by the commissioner, to each partner on whose behalf 
payment was made under this subdivision no later than the fifteenth day of the fourth 
month following the close of the partnership's taxable year a record of the amount of 
the tax paid on behalf of such partner by the partnership with respect to the taxable year.
      (B) (i) If income from one or more pass-through entities, as defined in subparagraph 
(D) of this subdivision, is the only source of income derived from or connected with 
Connecticut sources of a partner, or the partner and his or her spouse if a joint federal 
income tax return is or shall be made, the filing by the partnership of an annual return 
pursuant to section 12-726 and the payment by the partnership on behalf of the partner 
of the tax prescribed under subparagraph (A) of this subdivision shall satisfy the filing 
and payment requirements otherwise separately imposed on the partner by this chapter. 
The commissioner may make any deficiency assessment against, at the commissioner's 
sole discretion, either the partnership or the partner, provided any such assessment 
against the partner shall be limited to the partner's share thereof. Except as otherwise 
provided in section 12-733, any such assessment shall be made not later than three years 
after the partnership's annual return pursuant to section 12-726 is filed. The commissioner may refund or credit any overpayment to either the partnership or the partner, in 
the commissioner's sole discretion. Except as otherwise provided in section 12-732, 
any such overpayment shall be refunded or credited not later than three years from the 
due date of the partnership's annual return pursuant to section 12-726 or, if the time for 
filing such return was extended, not later than three years from the date on which such 
return is filed or the extended due date of such return, whichever is earlier.
      (ii) If income from one or more pass-through entities, as defined in subparagraph 
(D) of this subdivision, is not the only source of income derived from or connected with 
Connecticut sources of a partner, or the partner and his or her spouse if a joint federal 
income tax return is or shall be made, nothing in this subdivision shall be construed as 
excusing the partner from the obligation to file his or her own separate tax return under 
this chapter. In such event, the partner shall receive credit for the income tax paid under 
this subdivision by the partnership on his or her behalf. The commissioner may make 
any deficiency assessment that is related to the partner's share of partnership items 
against either, in the commissioner's sole discretion, the partnership or the partner. If 
the commissioner chooses to make any deficiency assessment against the partnership, 
then, except as otherwise provided in section 12-733, any such assessment shall be made 
not later than three years after the partnership's annual return pursuant to section 12-726 is filed. The commissioner may refund or credit any overpayment that is related to 
the partner's share of partnership items to either, in the commissioner's sole discretion, 
the partnership or the partner. If the commissioner chooses to refund or credit any overpayment to the partnership, then, except as otherwise provided in section 12-732, any 
such overpayment shall be refunded or credited not later than three years from the due 
date of the partnership's annual return pursuant to section 12-726 or, if the time for 
filing such return was extended, not later than three years from the date on which such 
return is filed or the extended due date of such return, whichever is earlier.
      (C) Notwithstanding any provision of subparagraph (A) of this subdivision, a partnership shall not be required to make a payment on account of the income tax imposed 
on a partner for a taxable year pursuant to this chapter if (i) the partner's distributive 
share of partnership income, to the extent derived from or connected with sources within 
this state, as reflected on the partnership's annual return for the taxable year under 
section 12-726, is less than one thousand dollars; (ii) the department has determined by 
regulation, ruling or instruction that the partner's income is not subject to the provisions 
of this subdivision; or (iii) the partnership is a publicly traded partnership, as defined 
in Section 7704(b) of the Internal Revenue Code, that is treated as a partnership for 
federal income tax purposes and that has agreed to file the annual return pursuant to 
section 12-726, and to report therewith the name, address, Social Security number or 
federal employer identification number, and other information required by the department concerning each unitholder whose distributive share of partnership income, to the 
extent derived from or connected with sources within this state, as reflected on such 
annual return, is more than five hundred dollars.
      (D) If a member of a pass-through entity, referred to in this subparagraph as an 
"upper-tier pass-through entity", is itself a pass-through entity, the member, referred to 
in this subparagraph as a "lower-tier pass-through entity", shall be subject to the same 
requirements to make payment, on behalf of its members, of the income tax imposed 
on those members pursuant to this chapter that apply to the upper-tier pass-through 
entity under this subdivision. The department shall apply the income tax paid by the 
upper-tier pass-through entity, on behalf of the lower-tier pass-through entity, to the 
income tax required to paid by the lower-tier pass-through entity, on behalf of its members. For purposes of this subdivision, "pass-through entity" means an S corporation, 
general partnership, limited partnership, limited liability partnership or limited liability 
company that is treated as a partnership for federal income tax purposes; and "member" 
means a shareholder of an S corporation, a partner in a general partnership, a limited 
partnership, or a limited liability partnership and a member of a limited liability company 
that is treated as a partnership for federal income tax purposes.
      (E) For purposes of section 12-740, a nonresident individual who is a member of 
a pass-through entity, as defined in subparagraph (D) of this subdivision, shall not be 
required to file an income tax return under this chapter for a taxable year if, for such 
taxable year, the only source of income derived from or connected with Connecticut 
sources of such member, or the member and his or her spouse if a joint federal income 
tax return is or shall be made, is from one or more pass-through entities, and the sum 
of such income derived from or connected with Connecticut sources from such one or 
more pass-through entities is less than one thousand dollars.
      (c) (1) With respect to each of its nonresident shareholders, each S corporation 
doing business in this state or having income derived from or connected with sources 
within this state shall, for each taxable year, make payment to the commissioner as 
provided in subdivision (2) of this subsection.
      (2) (A) Any payment under this subdivision shall be in an amount equal to the 
highest marginal tax rate in effect under section 12-700 for the taxable year multiplied 
by the subject shareholder's pro rata share of (i) such S corporation's separately and 
nonseparately computed items, as described in Section 1366 of the Internal Revenue 
Code, to the extent derived from or connected with sources within this state, as determined under this chapter, and (ii) any modification described in section 12-701 which 
relates to an item of such S corporation's income, gain, loss or deduction, to the extent 
derived from or connected with sources within this state, as determined under this chapter. Any amount paid by an S corporation to this state with respect to any taxable year 
pursuant to this subdivision shall be considered to be a payment by the shareholder on 
account of the income tax imposed on the shareholder for such taxable year pursuant 
to this chapter. An S corporation shall not be liable to, and shall be entitled to recover 
a payment made pursuant to this subdivision from, the shareholder on whose behalf the 
payment was made. Any payment for a taxable year shall be made at or before the date 
the annual return for such taxable year is required to be filed pursuant to section 12-726. The S corporation shall furnish, on a form prescribed by the department, to each 
shareholder on whose behalf payment was made under this subdivision no later than 
the fifteenth day of the fourth month following the close of the S corporation's taxable 
year a record of the amount of the tax paid on behalf of such shareholder by the S 
corporation with respect to the taxable year.
      (B) (i) If income from one or more pass-through entities, as defined in subparagraph 
(D) of this subdivision, is the only source of income derived from or connected with 
Connecticut sources of a shareholder, or the shareholder and his or her spouse if a joint 
federal income tax return is or shall be made, the filing by the S corporation of an annual 
return pursuant to section 12-726 and the payment by the S corporation on behalf of the 
shareholder of the tax prescribed under subparagraph (A) of this subdivision shall satisfy 
the filing and payment requirements otherwise separately imposed on the shareholder 
by this chapter. The commissioner may make any deficiency assessment against, at the 
commissioner's sole discretion, either the S corporation or the shareholder, provided 
any such assessment against the shareholder shall be limited to the shareholder's share 
thereof. Except as otherwise provided in section 12-733, any such assessment shall be 
made not later than three years after the S corporation's annual return pursuant to section 
12-726 is filed. The commissioner may refund or credit any overpayment to either the 
S corporation or the shareholder, in the commissioner's sole discretion. Except as otherwise provided in section 12-732, any such overpayment shall be refunded or credited 
not later than three years from the due date of the S corporation's annual return pursuant 
to section 12-726 or, if the time for filing such return was extended, not later than three 
years from the date on which such return is filed or the extended due date of such return, 
whichever is earlier.
      (ii) If income from one or more pass-through entities, as defined in subparagraph 
(D) of subdivision (2) of subsection (b) of this section, is not the only source of income 
derived from or connected with Connecticut sources of a shareholder, or the shareholder 
and his or her spouse if a joint federal income tax return is or shall be made, nothing in 
this subdivision shall be construed as excusing the shareholder from the obligation to 
file his or her own separate tax return under this chapter. In such event, the shareholder 
shall receive credit for the income tax paid under this subdivision by the S corporation 
on his or her behalf. The commissioner may make any deficiency assessment that is 
related to the shareholder's share of S corporation items against either, in the commissioner's sole discretion, the S corporation or the shareholder. If the commissioner 
chooses to make any deficiency assessment against the S corporation, then, except as 
otherwise provided in section 12-733, any such assessment shall be made not later than 
three years after the S corporation's annual return pursuant to section 12-726 is filed. 
The commissioner may refund or credit any overpayment that is related to the shareholder's share of S corporation items to either, in the commissioner's sole discretion, the S 
corporation or the shareholder. If the commissioner chooses to refund or credit any 
overpayment to the S corporation, then, except as otherwise provided in section 12-732, 
any such overpayment shall be refunded or credited not later than three years from the 
due date of the S corporation's annual return pursuant to section 12-726 or, if the time 
for filing such return was extended, not later than three years from the date on which 
such return is filed or the extended due date of such return, whichever is earlier.
      (C) Notwithstanding the provisions of subparagraph (A) of this subdivision, an S 
corporation shall not be required to make a payment on account of the income tax 
imposed on a shareholder for a taxable year pursuant to this chapter if (i) the shareholder's distributive share of S corporation income, to the extent derived from or connected 
with sources within this state, as reflected on the S corporation's annual return for the 
taxable year under section 12-726, is less than one thousand dollars; or (ii) the department 
has determined by regulation, ruling or instruction that the shareholder's income is not 
subject to the provisions of this subdivision.
      (D) For purposes of this subdivision, the provisions of subparagraphs (D) and (E) 
of subdivision (2) of subsection (b) of this section apply.
      (d) (1) In lieu of filing a return pursuant to this section, the commissioner may, if 
he determines that the enforcement of this chapter would not be adversely affected and 
pursuant to requirements and conditions set forth in forms and instructions, provide for 
the filing of a composite return for every qualifying nonresident member of a professional athletic team by such team, if such team is doing business in this state or the 
members of such team have compensation which is received for services rendered as 
members of such team and which is derived from or connected with sources within 
this state.
      (2) If a professional athletic team is required to file a composite return pursuant to 
this subsection, the commissioner may, if he determines that the enforcement of this 
chapter would not be adversely affected, require such team, in lieu of deducting and 
withholding Connecticut income tax as may otherwise be required under section 12-705, to make payment to the commissioner of tax, estimated tax, additions to tax, interest 
and penalties otherwise required to be paid to the commissioner by such qualifying 
nonresident members.
      (3) The commissioner may, if he determines that the enforcement of this chapter 
would not be adversely affected, require a professional athletic team, in lieu of deducting 
and withholding Connecticut income tax as may otherwise be required under section 
12-705, to make payment to the commissioner of tax, estimated tax, additions to tax, 
interest and penalties otherwise required to be paid to the commissioner by every (A) 
resident member, but only with respect to compensation which is received for services 
rendered as a member of a professional athletic team and (B) nonresident member who 
is not a qualifying nonresident member, but only with respect to compensation which 
is received for services rendered as a member of a professional athletic team and which 
is derived from or connected with sources within this state.
      (4) Any amount paid by a professional athletic team to this state with respect to any 
taxable period pursuant to this subsection shall be considered to be a payment by the 
member on account of the income tax imposed on the member for such taxable period 
pursuant to this chapter. The team shall be entitled to recover a payment made pursuant 
to this subsection from the member on whose behalf the payment was made.
      (5) For purposes of this subsection, "qualifying nonresident member" means a 
member of a professional athletic team who is a nonresident individual for the entire 
taxable year, who does not maintain a permanent place of abode in Connecticut at any 
time during the taxable year, who does not have income derived from or connected with 
sources within this state other than compensation which is received for services rendered 
as a member of a professional athletic team and which is derived from or connected 
with sources within this state.
      (June Sp. Sess. P.A. 91-3, S. 70, 168; May Sp. Sess. P.A. 92-5, S. 14, 37; P.A. 95-263, S. 1, 4; P.A. 96-175, S. 4, 5; 
P.A. 98-262, S. 11, 22; P.A. 04-216, S. 54; P.A. 06-159, S. 5.)
      History: June Sp. Sess. P.A. 91-3, S. 70, 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 made various technical and minor changes, effective 
June 19, 1992, and applicable to taxable years of taxpayers commencing on or after January 1, 1992; P.A. 95-263 added 
Subsec. (d) to permit filing a composite return for qualifying nonresident members of professional athletic teams, effective 
July 6, 1995, and applicable to taxable years commencing on or after January 1, 1996; P.A. 96-175 amended Subsec. (c)(3) 
to add the amount of the shareholder's pro rata share of the corporations' nonseparately computed items, reduced by the 
amount subject to tax under chapter 208 to the calculation of payment, effective May 31, 1996, and applicable to income 
years commencing on or after January 1, 1997; P.A. 98-262 amended Subsec. (c)(3) to clarify language relating to how a 
nonresident shareholder must calculate tax for nonseparately stated income derived from or connected with sources within 
this state, effective June 8, 1998, and applicable to taxable years commencing on or after January 1, 1998; P.A. 04-216 
deleted former Subsec. (b) and added new Subsec. (b) re group returns of partnerships with nonresident partners and 
amended Subsec. (c) to add provisions re group returns of S corporations with nonresident shareholders and make conforming changes, effective May 6, 2004, and applicable to taxable years commencing on or after January 1, 2004, and to 
estimated composite income tax payments required to be made on or after May 6, 2004; P.A. 06-159 amended Subsecs. 
(b) and (c) to eliminate group tax returns for partnerships, S corporations and pass-through entities, to require such businesses 
to pay the taxes nonresident partners owe on income from such businesses and to make conforming changes, effective 
June 6, 2006, and applicable to taxable years commencing on or after January 1, 2006.