for tax years beginning in 1989 and thereafter:

(i) where New York adjusted gross income does not exceed $475,000;

(a) married filing jointly or surviving spouse NYID × 25% × lesser of $50,000 or (NYAGI-$200,000) / $50,000

(b) head of household NYID × 25% × lesser of $50,000 or (NYAGI-$150,000) / $50,000

(c) unmarried individual or married filing separately NYID × 25% × lesser of $50,000 or (NYAGI-$100,000) / $50,000 A taxpayer filing as a head of household for the calendar year 1992 has New York adjusted gross income of $230,000 and total New York itemized deduction, before this limitation, of $40,000. The portion of the New York itemized deduction disallowed is computed as follows: $40,000 × 25% × lesser of $50,000 or ($230,000-$150,000) / $50,000 = $40,000 × 25% × lesser of $50,000 or $(80,000) / $50,000 = $40,000 × 25% × $50,000 / $50,000 = $10,000 × 1 = $10,000 itemized deductions disallowed.

(ii) where New York adjusted gross income exceeds $475,000, the following formula is used for all filing statuses; NYID × 25% + (NYID × 25% × (lesser of $50,000 or (NYAGI - $475,000))) / $50,000 A husband and wife filing a joint 1992 New York State resident personal income tax return have New York adjusted gross income of $530,000 and total New York itemized deduction, before this limitation, of $100,000. The portion of their New York itemized deduction disallowed is computed as follows: $100,000 × 25% + ($100,000 × 25% × (lesser of $50,000 or ($530,000 - $475,000))) / $50,000 = $25,000 + ($100,000 × 25% × (lesser of $50,000 or $55,000)) / $50,000 = $25,000 + ($100,000 × 25% × ($50,000)) / $50,000 = $25,000 + ($100,000 × 25% × 1) = $25,000 + $25,000 = $50,000 itemized deductions disallowed.