Part 1 – Complete this part to calculate your withholding allowances for New York State and Yonkers (line 1 of Form IT-2104). Disponible en español.Complete Form IT-2104 so that your employer can withhold the correct state and local income taxes from your pay. Information about Form W4, Employee's Withholding Certificate, including recent updates, related forms and instructions on how to file. Today we are talking all about the new york state withholding form and how to fill that out. Complete Form W-4 so that your employer can withhold the correct federal income tax from your pay. Employee's Withholding Certificate. Click below for up-to-date forms and documents for use in submitting address or name changes, W4 forms for adjusting withholding status when needed. Learn how to fill out a W4 form with this updated indepth guide for 2025. You are not subject to New York City or Yonkers tax unless you actually physically live in the city, even if you work in the City.