The Taxation Division’s Tax Assistance Office is available from 7:45 a.m. to 4:45 p.m. Monday through Friday to provide walk-in services to customers.  The office is located at:

Harry S Truman State Office Building
301 West High Street
Room 330
Jefferson City, MO 65101

Driving Directions to Harry S Truman Building

The Tax Assistance Office will assist taxpayers with the following services:

  • Tax Clearance or No Tax Due Assistance
  • Business Tax Registration Assistance
  • Sales Tax Exemption Assistance
  • Income Tax Compliance Assistance (customers who have received a federal audit or professional license notice)
  • Corporate Income Tax Assistance
  • Lien/Garnishment Resolution
  • Revocation Resolution
  • Income Tax Billing or Notice of Adjustments Resolution
  • Sales Tax Billings or Sales Tax Refunds Resolution
  • Withholding Tax Billings and Withholding Tax Refunds Resolution
  • Verification of Online Payments or Cancellation of Online Payments
  • Motor Fuel Resolution
  • Excise Tax Resolution
  • Installment Agreements

State Holidays (offices are closed on these dates):

Business Tax customers are also encouraged to use MyTaxMissouri at for a self-service experience. The service allows you to register a portal account to file and track Sales, Use, and Employer Withholding Tax, and Tire and Lead-Acid Battery Fee returns and payments and has many more features. The new service will allow you to view your available overpayment information.

Individual Income Tax customers can inquire about the status of their income tax refund at