State tax registration
Missouri Payroll Tax Registration
Where to register, how long it takes, and what to send us.
State income tax withholding
Withholding account (joint DOR/DES registration)
Missouri Department of Revenue
- Typical wait:
- 2 to 3 business days
- You'll receive:
- A Missouri Tax ID number (typically 8 digits) and a 4-digit PIN, mailed in a welcome letter.
- Send Unify:
- Your Missouri Tax ID and PIN.
State unemployment insurance
Unemployment tax account (same joint registration)
Missouri Division of Employment Security (DES)
- Typical wait:
- 2 to 3 business days
- You'll receive:
- A DES employer account number and a 2.376% new-employer rate in 2026 (1.00% for 501(c)(3) nonprofits).
- Send Unify:
- Your DES account number and your rate notice.
One online registration covers both withholding and unemployment.
Register for Unemployment tax account (same joint registration) (opens in a new tab)Local taxesKansas City and St. Louis levy a 1% earnings tax. Ask us if you have employees there.
All states
Last verified September 30, 2026. Broken link? Email support@unifypayroll.com.