Key takeaways

• Most states require businesses to file and pay sales tax on the 20th of the month.
• Not every state has the same sales tax filing schedule, you might also have deadlines on the 15th, 23rd, 25th, 30th, or 31st.
• Businesses have to file a return on time every month, even if they sell through a marketplace or they don’t have sales tax to remit.
• SaaS is taxable in many states and SaaS businesses have to follow the same sales tax filing schedules as ecommerce businesses.
• Some states allow quarterly, semi-annual, or annual filing for businesses that meet certain sales or tax liability thresholds. Due dates are in January, April, July, and October.

2026 sales tax due dates by state

Here are the sales tax deadlines for every state, plus the District of Columbia and Puerto Rico:

2026 sales tax calendar

See when your sales taxes are due in 2026 with this list of the important tax deadlines in every state, by month:

Note: This calendar only reflects federal holidays, not state holidays. Be sure to check any state-specific holidays that could affect your due date.

January 2026

Important: Most quarterly sales tax returns are due this month by the state’s listed due date.

• January 15th: 
  • Maine
  • Annual due date: Maine
• January 20th: 
  • Most monthly filers
  • Annual due date: Alabama, Arizona, Colorado, Georgia, Idaho, Illinois, Nevada, South Carolina, Tennessee, and Texas
  • Semi-annual due date: Alabama and Hawaii
• January 23rd: 
  • Ohio
  • Semi-annual due date: Ohio
• January 25th: Washington
• January 26th (Monday): 
  • Kansas, New Mexico, and Vermont
  • Annual due date: Kansas
  • Semi-annual due date: New Mexico
• January 30th: 
  • Indiana and Massachusetts
  • Annual due date: Massachusetts
• January 31st: 
  • Alaska, Connecticut, Iowa
  • Annual due date: California, Indiana, Iowa, Missouri, North Dakota, and Wyoming
  • Semi-annual due date: North Dakota
• February 2nd (Monday): 
  • California, Missouri, North Dakota, Utah, Wisconsin, and Wyoming
  • Annual due date: Utah

February 2026

• February 5th: Annual due date: Minnesota
• February 17th (Tuesday): Maine
• February 20th:
  • Most monthly filers
  • Semi-annual due date: Pennsylvania
• February 23rd: Ohio and Vermont
• February 25th: Kansas, New Mexico, Vermont, and Washington
• February 28th: 
  • Alaska, California, Connecticut, Indiana, Iowa, Massachusetts, Missouri, North Dakota, Utah, Wisconsin, and Wyoming
  • Annual due date: Michigan

March 2026

• March 15th: Maine
• March 20th:
  • Most monthly filers
  • Quarterly due date: New York
  • Annual due date: New York
• March 23rd: Ohio
• March 25th: Kansas, New Mexico, Vermont, and Washington
• March 30th: Indiana and Massachusetts
• March 31st: All end-of-month filers

April 2026

Important: Most quarterly sales tax returns are due this month by the state’s listed due date.

• April 15th: 
  • Maine
  • Annual due date: Washington
• April 20th: 
  • Most monthly filers
  • Annual due date: Hawaii
• April 23rd: Ohio
• April 25th: Washington
• April 27th: Kansas, New Mexico, and Vermont
• April 30th: All 30th and end-of-the-month filers

May 2026

• May 15th: Maine
• May 20th: Most monthly filers
• May 25th: Washington
• May 26th (Tuesday): Kansas, New Mexico, Ohio, Vermont, and Washington
• May 30th: Massachusetts
• May 31st: Alaska, Connecticut, Iowa
• June 1st (Monday): California, Indiana, Missouri, North Dakota, Utah, Wisconsin, and Wyoming

June 2026

• June 15th: Maine
• June 20th: 
  • All those who need to file on or before the 20th
  • Quarterly due date: New York
• June 22nd: All those who can file on the next business day after the 20th
• June 23rd: Ohio
• June 25th: Kansas, New Mexico, Vermont, and Washington
• June 30th: All 30th and end-of-the-month filers

July 2026

Important: Most quarterly sales tax returns are due this month by the state’s listed due date.

• July 15th: Maine
• July 20th: 
  • Most monthly filers
  • Semi-annual due date: Alabama and Hawaii
• July 23rd:
  • Ohio
  • Semi-annual due date: Ohio
• July 25th: 
  • Washington
  • Semi-annual due date: New Mexico
• July 27th: Kansas, New Mexico, and Vermont
• July 30th: Indiana and Massachusetts
• July 31st: 
  • All end-of-month filers
  • Semi-annual due date: North Dakota
• August 17th (Monday): Maine

August 2026

• August 20th: 
  • Most monthly filers
  • Semi-annual due date: Pennsylvania
• August 24th (Monday): Ohio
• August 25th: Kansas, New Mexico, Vermont, and Washington
• August 30th: Massachusetts
• August 31st: Indiana and all end-of-month filers

September 2026

• September 15th: Maine
• September 20th: 
  • All those who need to file on or before the 20th
  • Quarterly due date: New York
• September 21st (Monday): All those who can file on the next business day after the 20th
• September 23rd: Ohio
• September 25th: Kansas, New Mexico, Vermont, and Washington
• September 30th: All 30th and end-of-the-month filers

October 2026

Important: Most quarterly sales tax returns are due this month by the state’s listed due date.

• October 15th: Maine
• October 20th: 
  • Most monthly filers
  • Annual due date: District of Columbia
• October 23rd: Ohio
• October 25th: Washington
• October 26th (Monday): Kansas, New Mexico, and Vermont
• October 30th: Indiana and Massachusetts
• October 31st: Alaska, Connecticut, Iowa
• November 2 (Monday): California, Missouri, North Dakota, Utah, Wisconsin, and Wyoming

November 2026

• November 16th (Monday): Maine
• November 20th: Most monthly filers
• November 23rd: Ohio
• November 25th: Kansas, New Mexico, Vermont, and Washington
• November 30th: All 30th and end-of-the-month filers

December 2026

Most quarterly sales tax returns are due this month on the state’s listed due date.

• December 15th: Maine
• December 20th: 
  • All those who need to file on or before the 20th
  • Quarterly due date: New York
• December 21st (Monday): All those who can file on the next business day after the 20th
• December 23rd: Ohio
• December 25th: Washington
• December 26th: Kansas, New Mexico, and Vermont
• December 30th: Indiana and Massachusetts
• December 31st: All end-of-month filers

Non-standard tax deadline rules sellers need to know

Several states have non-standard sales tax filing schedules and requirements that can cause missed or late filings if you’re not aware of them. Below, you can check whether the states you sell in have non-standard deadlines and make note of the rules you need to follow when filing and remitting.

States with unique tax rules

Important: Some states, like Arizona and Florida, have different submission and payment deadlines for paper vs. electronic returns.

Arizona

• Electronic returns filed in AZTaxes are due on the last business day of the month.

California 

• You need a California Department of Tax and Fee Administration (CDTFA) account to file.
• Quarterly prepayments are due on the 24th of the month in the first two months of each quarter.

Colorado

• Some cities in Colorado adopted a “home rule” charter and administer their own local sales and use tax with separate filing rules and deadlines. Home rule cities include Boulder, Colorado Springs, and Aurora.

Florida

• Returns and payments are due on the 1st, but are considered late after the 20th.
• If you file a return without a payment, you can submit on the 20th or the next business day.
• If you pay by electronic payment, you have to submit by 5:00 PM (ET) on the business day prior to the due date.

Missouri

• Some businesses may pay sales taxes on a quarter-monthly basis, generally due on the 5th, 10th, 20th, and 26th or the next business day, but these dates can change month to month.

New York

• Most businesses have to file quarterly (not monthly) and the deadlines are on the 20th or the next business day in March, June, September, and December.

Outlier deadline schedules

Most states have due dates on the 20th, so sellers need to watch out for states with non-standard filing schedules.

• Ohio is the only state with deadlines on the 23rd of the month.
• Maine is the only state with deadlines on the 15th of the month.
• Massachusetts is the only state with deadlines on or before the 30th every month.
• Nevada joined the standard ’20th of the month’ group in 2026, moving away from its previous month-end schedule
• Washington has deadlines on or before the 25th of the month and Kansas, New Mexico, and Vermont have deadlines on the 25th or the next business day.

Month-end due dates that change

Sales tax deadlines at the end of the month are easy to miss since the date of the last day of the month changes throughout the year.

• Alaska, Connecticut, and Iowa have deadlines on or before the last day of the month, so your deadline could be either the 30th or 31st depending on the month.
• California, Missouri, North Dakota, Utah, Wisconsin, and Wyoming have deadlines on the last day of the month, or the next business day. That means your deadline could be the 30th, 31st, or the 1st or 2nd of the following month.
• Indiana is the only state with deadlines on the 30th of the month or next business day, which means your deadline could be the 31st, or the 1st or 2nd of the following month. On leap years, it’s March 1st, not February 29th.

Reminder for sellers: Know your filing frequency

Important: Your sales tax filing frequency varies from state to state and your due dates might be different in every state you sell in. Missing deadlines can trigger penalties. You’ll likely be notified about filing frequency changes by email, a letter, or through your taxpayer portal.

In many states, your filing frequency can change based on your total sales or total tax liability for the previous month. If you’re a smaller business that qualified for an annual or quarterly filing schedule when you registered but you’re going through a growth spurt, there’s a good chance you’ll need to start filing monthly.

Always file on time, everywhere you sell with TaxCloud

Don’t risk missing a sales tax deadline. TaxCloud automates sales tax registration, collection, filing, and remittance across the U.S. so your team doesn’t have to worry about keeping track of deadlines and filing frequencies across different states.

TaxCloud is also a Streamlined Sales Tax (SST) Certified Service Provider (CSP) and provides discounted services in participating states.

With TaxCloud, you can stay compliant without missing a beat even as you expand your business into more states and grow your revenue.

Book a walkthrough and explore how sales tax filing automation works with TaxCloud.