Tax Law, §1329; Codes and Ordinances of the City of Yonkers, § 92-88
In case of special situations, however, an employer may apply to the Commissioner of Taxation and Finance for permission to use another method. The wage bracket table method, the exact calculation method, and the top income tax rates method are set out in Appendix 10-A of this Title. The Yonkers withholding tax tables and methods, along with forms, instructions and other guidance for withholding, payment and reporting of the City of Yonkers income tax surcharge on residents are available on the Tax Department's website.
N.Y. Comp. Codes R. & Regs. Tit. 20 § 251.1