Rent entered on lease form shall be actual rent, including surcharges if any, being assessed tenant at the time the lease is signed. Any later increase or decrease from this actual rent resulting from a change in tenant's income shall be handled by a rent change authorization which will be an amendment to the lease. Changes in actual rent for any other reason shall require execution of a new lease.
N.Y. Comp. Codes R. & Regs. Tit. 9 §§ 1627-4.3