State tax registration
Oklahoma Payroll Tax Registration
Where to register, how long it takes, and what to send us.
State income tax withholding
Withholding account (OkTAP)
Oklahoma Tax Commission (OTC)
- You'll receive:
- A withholding account ID that typically starts with "WTH" followed by 10 digits.
- Send Unify:
- Your WTH account ID.
In OkTAP, choose "Register for a Business," then "Business Registration."
Register for Withholding account (OkTAP) (opens in a new tab)State unemployment insurance
Unemployment tax account (EZ Tax Express)
Oklahoma Employment Security Commission (OESC)
- You'll receive:
- An employer account number (typically 9 digits). New employers pay 1.5% in 2026 on the first $25,000 of each employee's wages.
- Send Unify:
- Your OESC account number and your rate notice.
Create a user ID, then submit a status report (Form OES-1). OESC is moving employers to a new portal, so the sign-up screens may change.
Register for Unemployment tax account (EZ Tax Express) (opens in a new tab)All states
Last verified September 30, 2026. Broken link? Email support@unifypayroll.com.