Overview
Arizona employers who withhold state income tax from employee wages must file returns with the Arizona Department of Revenue (ADOR).
The TaxBandits API supports the automation of Form A1-QRT, Arizona's quarterly withholding tax return.
Forms supported
| Form | Type | Filing frequency | Due date |
|---|---|---|---|
| Form A1-QRT | WH | Quarterly | Last day of the month following the quarter end: April 30, July 31, October 31, January 31 |
Key compliance notes
- Zero filing required. Form A1-QRT must be filed every quarter, including quarters with no withholding liability, until the withholding account is canceled.
- Payment separate from filing. Form A1-QRT reports withholding for the quarter; it does not replace the employer's separate deposit schedule (monthly, semi-weekly, or quarterly).
- Final returns. Employers closing their withholding account must indicate a final return and cancellation date.
Before filing, you can simulate the entire verification flow in our Sandbox environment without submitting real data to state agencies. See how
Available endpoints
Each endpoint below is specific to Arizona's withholding Form A1-QRT.
To use the following endpoints, you must first call the Auth method to obtain an access token. Include this token in your request header as a Bearer token. Refer to OAuth 2.0 Authentication for details on JWT-based authentication.
- Create — Generates a new Form A1-QRT quarterly withholding return for the specified tax year and quarter.
- Update — Modifies the details of a previously created Form A1-QRT return before it's transmitted.
- Get — Retrieves the details of a previously created Form A1-QRT return.