Review our reporting frequency chart to determine your reporting requirements. All filings are due on or before the 20th day of the month. Payments can be paid in person at our office location or mailed directly: City of Chandler - Tax and License Division P.O. Box 4008 - Mail Stop 701 Chandler, AZ 85244-4008 Postmarks are not evidence of timely filing; payments must be received in our office on or before the last business day of the month to be considered timely.