State tax registration
Arizona Payroll Tax Registration
Where to register, how long it takes, and what to send us.
State income tax withholding
Withholding registration (Joint Tax Application, Form JT-1)
Arizona Department of Revenue (ADOR)
- You'll receive:
- No new number: your Arizona withholding account is your federal EIN, registered through the Joint Tax Application on AZTaxes.
- Send Unify:
- Nothing extra; Arizona uses your federal EIN for withholding.
State unemployment insurance
Unemployment insurance account (same Joint Tax Application)
Arizona Department of Economic Security (DES), Unemployment Insurance Tax
- You'll receive:
- A UI employer account number (typically 8 digits), mailed with your Determination of Unemployment Insurance Liability, and a 2.0% new-employer rate on the first $8,000 of wages.
- Send Unify:
- Your UI employer account number and your rate notice.
One Joint Tax Application covers both withholding and unemployment.
Register for Unemployment insurance account (same Joint Tax Application) (opens in a new tab)All states
Last verified September 30, 2026. Broken link? Email support@unifypayroll.com.