by Sarah Craig August 13, 2025
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 2025 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.
*indicates a due date pushed back due to a weekend or holiday
Monthly sales tax due on September 22, 2025
Monthly sales tax due on September 30, 2025
Monthly sales tax due on September 29, 2025
Quarterly prepay due on September 24, 2025
District of Columbia
Monthly sales tax due on September 19, 2025
How can TaxJar automate your sales tax compliance?
Connect with our sales team to explore TaxJar’s features and pricing, and discover how we can support your business.
Quarterly prepay due on September 22, 2025
Monthly sales tax due on September 25, 2025
Monthly sales tax due on September 15, 2025
Quarterly sales tax due on September 22, 2025
Monthly sales tax due on September 23, 2025
Bimonthly sales tax due on September 22, 2025
Monthly sales tax due on September 20, 2025
Ready to automate sales tax? Sign up for a free trial of TaxJar today
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