Information regarding income withholding, health insurance, new hire reporting, employer responsibilities and more, can be found at the following link: 

Employers & Payroll Service Providers (wisconsin.gov)

Questions regarding Withholding Lists/Coupons: 

• 1-877-209-5211

• 1-877-209-5209 (TTY)

Questions regarding Electronic Funds Transfer:

• 1-414-615-2423

Questions about R&D Fee Withholding:

• 1-414-615-2585