Conn. Gen. Stat. § 12-217e

(b) There shall be allowed as a credit against the tax imposed by this chapter an amount equal to the following percentage of that portion of such tax which is allocable to any service facility: (1) Fifteen per cent, if there are three hundred or more but not more than five hundred ninety-nine new employees working at such facility; (2) twenty per cent if there are six hundred or more but not more than eight hundred ninety-nine new employees working at such facility; (3) twenty-five per cent, if there are nine hundred or more but not more than one thousand one hundred ninety-nine new employees working at such facility; (4) thirty per cent if there are one thousand two hundred or more but not more than one thousand four hundred ninety-nine new employees working at such facility; (5) forty per cent, if there are one thousand five hundred or more but not more than one thousand nine hundred ninety-nine new employees working at such facility; or (6) fifty per cent if there are two thousand or more new employees working at such facility. As used in this subsection: (A) “New employee” means a person hired by a taxpayer to fill a position for a new job or a person shifted from an existing location of the taxpayer outside this state to a service facility in this state, provided (i) in no case shall the total number of new employees allowed for purposes of this credit exceed the total increase in the taxpayer's employment in this state, which increase shall be the difference between (I) the number of employees employed by the taxpayer in this state at the time of application to the Commissioner of Revenue Services for such credit plus the number of new employees who would be eligible for inclusion under the credit allowed under this subsection without regard to this calculation, and (II) the highest number of employees employed by the taxpayer in this state in the year preceding the taxpayer's application to the Commissioner of Revenue Services for such credit, and (ii) a person shall be deemed to be a “new employee” only if such person's duties in connection with the operation of the facility are on a regular, full-time or equivalent or full-time and permanent basis; and (B) “new job” means a job that did not exist in the business of a taxpayer in this state prior to the taxpayer's application to the Commissioner of Revenue Services for such credit and that is filled by a new employee, but does not include a job created when an employee is shifted from an existing location of the taxpayer in this state to a service facility.

(c) The portion of such tax which is allocable to such a manufacturing facility, service facility or eligible facility shall be determined by multiplying such tax by a fraction computed as the simple arithmetical mean of the following fractions: First, a fraction the numerator of which is the average monthly net book value in the income year of the manufacturing facility, service facility or eligible facility, and machinery and equipment acquired for and installed in the manufacturing facility, service facility or eligible facility, without deduction on account of any encumbrance thereon, or if rented to the taxpayer, the value of the manufacturing facility, service facility or eligible facility, and machinery and equipment acquired for and installed in the manufacturing facility, service facility or eligible facility, computed by multiplying the gross rents payable by the taxpayer for the manufacturing facility, service facility or eligible facility, and such machinery and equipment during the income year or period by eight, and the denominator of which is the sum of the average monthly net book value of all real property and machinery and equipment held and owned by the taxpayer in the state, without deduction on account of any encumbrance thereon and the value of all real property and machinery and equipment rented to the taxpayer in the state, computed by multiplying the gross rents payable during the income y
ght, and the denominator of which is the sum of the average monthly net book value of all real property and machinery and equipment held and owned by the taxpayer in the state, without deduction on account of any encumbrance thereon and the value of all real property and machinery and equipment rented to the taxpayer in the state, computed by multiplying the gross rents payable during the income year by eight; and second, a fraction the numerator of which is all wages, salaries and other compensation paid during the income year to employees of the taxpayer whose positions are directly attributable to the manufacturing facility, service facility or eligible facility and the denominator of which is the wages, salaries and other compensation paid during the income year to all employees of the taxpayer in the state. An employee's position is directly so attributable if (1) the employee's service is performed or his base of operations is at the manufacturing facility, service facility or eligible facility, (2) the position did not exist prior to the construction, renovation, expansion or acquisition of the manufacturing facility, service facility or eligible facility, and (3) but for the construction, renovation, expansion or acquisition of the manufacturing facility, service facility or eligible facility the position would not have existed. For the purposes of this subsection, “gross rents” means gross rents as defined in section 12-218 .

(d) The credit allowed by this section may be claimed only by the initial occupant or occupants of the manufacturing facility, service facility or eligible facility. The owner of the manufacturing facility, service facility or eligible facility may not claim the credit unless the owner is also an occupant. The credit may first be claimed on the tax return for the taxpayer's income year which begins during the calendar year next succeeding the calendar year in which the taxpayer was issued an eligibility certificate, and may be claimed in each of the following nine income years. If within such period, however, any facility for which an eligibility certificate has been issued ceases to qualify as a manufacturing facility, service facility or eligible facility, or any occupant of a manufacturing facility, service facility or eligible facility ceases to be an occupant, the entitlement to the credit allowed by this section shall terminate in the income year in which the qualification or occupancy ceases, and there shall not be a pro rata application of the credit to such income year. No credit allowed by this section may be first claimed for any income year commencing on or after January 1, 2018.

(e) Any subsequent occupant or occupants of a manufacturing facility, service facility or eligible facility for which an eligibility certificate has been issued may claim the credit allowed by this section in accordance with subsection (c) of this section but only after obtaining a new eligibility certificate with respect to the manufacturing facility, service facility or eligible facility being occupied in the manner provided in section 32-9r .

(f) The Commissioner of Economic and Community Development shall, upon request, provide a copy of the applicable eligibility certificate to the Commissioner of Revenue Services.

*Note: Section 2 of public act 93-311 is special in nature and therefore has not been codified but remains in full force and effect according to its terms.

See Sec. 32-9p for definitions of “manufacturing facility” and “service facility”.