by Sarah Craig August 14, 2026
Need a reminder on when sales tax is due in September? We’re here to help. Find your state (or states) below to see your September 2026 sales tax due date. And if you need help collecting, reporting and filing sales tax, sign up for a 30-day free trial of TaxJar.
An (A) symbol denotes the state has an Amazon Fulfillment Center.
Monthly sales tax due on September 21, 2026
Monthly sales tax due on September 30, 2026
Monthly sales tax due on September 29, 2026
Quarterly prepay due on September 24, 2026
District of Columbia
Monthly sales tax due on September 18, 2026
Quarterly prepay due on September 21, 2026
Monthly sales tax due on September 25, 2026
Monthly sales tax due on September 15, 2026
Quarterly sales tax due on September 21, 2026
Monthly sales tax due on September 23, 2026
Bimonthly sales tax due on September 21, 2026
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