§ 1330. Credit for tax withheld. The city income tax surcharge withheld shall not reduce net state tax for purposes of computing the city income tax surcharge, but any amount of tax actually deducted and withheld under the authority of this article in any calendar year shall be deemed to have been paid to the state tax commission on behalf of the person from whom withheld, and such person shall be credited with having paid the amount of tax for the taxable year beginning in such calendar year. For a taxable year of less than twelve months, the credit shall be made under regulations of the state tax commission.