N.Y. Comp. Codes R. & Regs. tit. 8, § 2408.2
(d) For the purposes of subdivisions (a) and (b) of this section, eligible attendance shall be full-time matriculated attendance in a program of post-secondary study which is approved for the receipt of Federal pell grant awards in accordance with section 1,070 of title 20 of the United States Code, et. seq. and the regulations promulgated thereunder.
(1) Any change in the status of an applicant, or of any person whose income was required to be included in the computation of the applicant's award, which occurs on or after January 1st preceding the academic year for which the application is filed with the corporation and before the first day of any term for which the award is granted, will be considered in computing an adjustment of the applicant's award for that term, provided that the change in status was caused by such person's:
(3) Adjustments shall be computed by adjusting the reported taxable income of the person whose circumstances have changed to reflect the increase or diminution of income available to the applicant during the term for which an award is made. The amount of income of such person to be included in the computation of the applicant's award shall be any support payments to be received from the noncustodial parent for the benefit of the applicant during the balance of the calendar year, plus the result of the following calculation:
(taxable income reported for base tax year) x (number of full months status unchanged) / (18 months)
(e) Adjustments for change in circumstance.
Adjustments to the income information reported may be made upon the following criteria: