For purposes of this Part, the New York State personal income tax is the ordinary tax (see section 101.1 of this Title), reduced by the following credits:

(i) the investment credit and the retail enterprise credit (see section 106.1 of this Title);

(ii) the credit for household and dependent care services necessary for gainful employment (see section 106.3 of this Title);

(iii) the credit for sales or compensating use taxes paid upon the purchase of any catalytic, purifying or bleaching chemical agent (see section 106.4 of this Title);

(iv) the real property tax circuit breaker credit (see section 106.5 of this Title);

(v) the mortgage recording tax credit (see section 106.6 of this Title);

(vi) the credit against ordinary tax allowed certain residents for income taxes imposed by another state of the United States, a political subdivision of such state or by the District of Columbia (see sections 120.1 through 120.4 of this Title); and