CONNECTICUT STATUTES AND CODES
               		Sec. 12-219a. Apportionment of tax base in and out of state. Insurance companies excepted.
               		
               		
               	 	
               	 	               	 	
               	 	
               	 	
               	 		
      Sec. 12-219a. Apportionment of tax base in and out of state. Insurance companies excepted. (a) If a taxpayer is taxable both within and without the state, a tax shall 
be imposed on the base as provided in section 12-219, apportioned on the following 
basis: (1) The average monthly value of all investments other than stock of private 
corporations, and all cash, credits and other intangible assets of the taxpayer shall be 
divided between (A) those having a tax situs within the state and (B) those having a tax 
situs without the state; (2) the average monthly net book value of the tangible property 
held and owned by the taxpayer during the income year shall be divided between (A) 
that held within the state and (B) that held without the state; the numerator of the allocation fraction shall consist of the sum of subparagraph (A) of subdivision (1) of this 
subsection and subparagraph (A) of subdivision (2) of this subsection, and the denominator shall consist of the sum of subdivisions (1) and (2) of this subsection; which allocation 
fraction shall be multiplied by the amount of the unallocated tax base as computed under 
the terms of said section 12-219 to obtain the tax base for such taxpayer. For the purposes 
of this section, the intangible assets of a company having its principal place of business 
within the state shall be deemed to have a tax situs within the state unless it can be 
clearly established that some or all of such assets are held in connection with business 
conducted during the income year without the state, and a similar rule shall apply to 
intangible assets of a company having its principal place of business without the state. 
Such assets shall be reported by the taxpayer at the valuations at which they appear upon 
its books, provided the Commissioner of Revenue Services shall exercise the powers 
with respect to such valuations granted him under the terms of said section 12-219. For 
the purpose of apportionment of the base as provided in said section 12-219, a taxpayer 
is taxable in another state if in such state such taxpayer conducts business and is subject 
to a net income tax, a franchise tax measured by net income, a franchise tax for the 
privilege of doing business or a corporate stock tax, or if such state has jurisdiction to 
subject such taxpayer to such a tax, regardless of whether such state does, in fact, impose 
such a tax.
      (b) (1) Any company that is (A) a limited partner in a partnership, other than an 
investment partnership, that does business, owns or leases property or maintains an 
office within this state and (B) not otherwise carrying on or doing business in this state 
shall apportion the average value of its partnership interest within and without this state 
under the provisions of subsection (a) of this section, except that the numerator and the 
denominator of its apportionment fraction shall be its proportionate part of the partnership's apportionment factors. For purposes of this section, the partnership shall compute 
its apportionment fraction and the numerator and the denominator of its apportionment 
factors as if it were a company taxable both within and without this state. However, if 
the commissioner determines that the company and the partnership are, in substance, 
parts of a unitary business engaged in a single business enterprise, the company shall 
be taxed in accordance with the provisions of subdivision (3) of this subsection and not 
in accordance with the provisions of this subdivision.
      (2) Any company that is (A) a limited partner (i) in an investment partnership or 
(ii) in a limited partnership, other than an investment partnership, that does business, 
owns or leases property or maintains an office within this state and (B) otherwise carrying 
on or doing business in this state shall apportion its additional tax base, including the 
average value of its partnership interest, within and without the state under the provisions 
of subsection (a) of this section, except that the numerator and the denominator of its 
apportionment factors shall include its proportionate part of the numerator and the denominator of the partnership's apportionment factors. For purposes of this section, the 
partnership shall compute its apportionment fraction and the numerator and the denominator of its apportionment factors, as if it were a company taxable both within and 
without this state.
      (3) Any company that is a general partner in a partnership that does business, owns 
or leases property or maintains an office within this state shall, whether or not it is 
otherwise carrying on or doing business in this state, apportion its additional tax base, 
including the average value of its partnership interest, within and without the state under 
the provisions of subsection (a) of this section, except that the numerator and the denominator of its apportionment factors shall include its proportionate part of the numerator 
and the denominator of the partnership's apportionment factors. For purposes of this 
section, the partnership shall compute its apportionment fraction and the numerator and 
the denominator of its apportionment factors, as if it were a company taxable both within 
and without this state.
      (c) This section shall not apply to insurance companies.
      (P.A. 73-350, S. 12, 27; 73-616, S. 53, 67; P.A. 75-501, S. 2, 3; P.A. 77-539, S. 2, 3; 77-614, S. 139, 610; P.A. 96-197, 
S. 7, 11.)
      History: P.A. 73-350 effective May 9, 1973, and applicable to income years beginning on or after January 1, 1973; 
P.A. 73-616 made previous provisions applicable to taxpayer maintaining continuous place of business without the state 
and provided that entire additional tax base is subject to tax if permanent or continuous place of business not maintained 
without the state, effective June 1, 1973, and applicable to income years beginning on or after January 1, 1973; P.A. 75-501 made provisions applicable to taxpayer who "is taxable both within and without the state" and defined what is meant 
by the term "taxable in another state", effective July 3, 1975, and applicable to income years ending on or after that date; 
P.A. 77-539 included in terms of definition above taxpayers conducting business in another state as well as being subject 
to taxes; P.A. 77-614 substituted commissioner of revenue services for tax commissioner, effective January 1, 1979; P.A. 
96-197 made existing section Subsec. (a) and added new Subsec. (b) re apportionment of net income re companies that 
are limited partners in a partnership and made technical changes, effective June 3, 1996, and applicable to income years 
commencing on or after January 1, 1996.
      Cited. 43 CS 42.