2. No landlord, lessor, sub-lessor or grantor may demand any payment,
fee, or charge for the late payment of rent unless the payment of rent
has not been made within five days of the date it was due, and such
payment, fee, or charge shall not exceed fifty dollars or five percent
of the monthly rent, whichever is less; provided a cooperative housing
corporation, other than a cooperative housing corporation subject to the
provisions of article two, article four, article five or article eleven
of the private housing finance law, shall be permitted to charge a
tenant that is a dwelling unit owner or shareholder of such cooperative
housing corporation a fee of up to eight percent of the monthly
maintenance fee for the late payment of the monthly maintenance fee if
the proprietary lease or occupancy agreement provides for such fee.