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Wisconsin Tax Office Phone Numbers

Customer Service Telephone Numbers

WI Tax Office Customer Service

  • Individuals: (608) 266-2486
    • FAX: (608) 267-1030
  • Businesses: (608) 266-2776

Check On Your WI Tax Refund

  • Madison: (608) 266-8100
  • Milwaukee: (414) 227-4907
  • Toll Free: (866) 947-7363 (866-WIS-RFND)
  • Available 24/7 – updated daily

Free Volunteer WI Income Tax Assistance (VITA) Sites

  • Call 211 from anywhere in the state to locate a VITA site near you during income tax season

Internal Revenue Service (federal government)

  • Call 1-800-829-1040