- A1-QRT: All employers must file a quarterly withholding tax return with the AZ Department of Revenue to report its Arizona withholding tax liability. This return is a good source of information to use to balance the withholding amounts remitted as well as the total AZ wages reported to the State of AZ.
- AZ UC_018: Online filing is preferred up to 999 employees. If you have a paper copy of the UC-018, it is a good source of information to use in balancing UI wages and employer liabilities for prior quarters.
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