Sales Tax Filing Deadlines Calendar
How Filing Deadlines Work
Each state assigns you a filing frequency when you register for your sales tax permit: monthly, quarterly, or annually. The assignment is based on your expected or actual sales tax collection volume. States periodically reassess your frequency based on actual collections, so a seller who starts on quarterly filing may be moved to monthly as their sales grow. Your assigned frequency and specific due dates are communicated in your registration confirmation and can be verified through your state tax portal.
Most states follow a consistent pattern where returns for a given period are due on a specific day of the following month. The most common due date for monthly returns is the 20th of the following month (January sales are due February 20, February sales due March 20, and so on). Quarterly returns follow the same pattern based on the quarter-end month. Annual returns are typically due in January or February of the following year.
When a due date falls on a weekend or state holiday, the deadline shifts to the next business day. This varies by state, some automatically extend to Monday if the 20th falls on a Saturday or Sunday, while others may have different holiday calendars that affect specific dates. Always verify the actual due date through the state's filing portal, especially for deadlines near holidays.
Monthly Filing Due Dates by State
The majority of states set monthly returns due on the 20th of the following month. States using this standard date include Alabama, Arizona, Arkansas, Colorado, Connecticut, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Michigan, Minnesota, Mississippi, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, and Wyoming.
Notable exceptions to the 20th of the month due date include California (last day of the month following the reporting period), Florida (the 20th for electronic filers, the 1st for paper filers), New York (the 20th of the month following the quarter for quarterly filers, but monthly filers also due on the 20th), and Texas (the 20th of the month following the reporting period). Always verify your specific due date through your state portal, as these dates can change.
Quarterly Filing Due Dates
Quarterly returns cover three-month periods that align with calendar quarters. The standard quarterly periods and their typical due dates are Q1 (January through March), due April 20. Q2 (April through June), due July 20. Q3 (July through September), due October 20. Q4 (October through December), due January 20 of the following year.
States that use different quarterly due dates include California (quarterly returns due on the last day of the month following the quarter, so April 30, July 31, October 31, and January 31), and New York (quarterly returns due March 20, June 20, September 20, and December 20, because New York's quarters end on February 28, May 31, August 31, and November 30). Check your state's specific quarter definitions and due dates, as they may not match the standard calendar quarters.
Annual Filing Due Dates
Annual returns cover the full calendar year (January through December) and are typically due on January 20 or January 31 of the following year, depending on the state. Some states set the annual return due date in February. Annual filing is assigned to low-volume sellers who collect minimal tax, and if your sales increase, the state will likely move you to quarterly or monthly filing.
If you are assigned annual filing in a state, do not forget about it. Because you only file once per year, it is easy to miss the deadline. Set a calendar reminder for early January to prepare your annual return, and another reminder one week before the due date to ensure it is filed.
Prepayment Requirements
Several states require large sellers to make estimated tax payments (prepayments) during the month, in addition to the regular monthly return. Prepayment requirements kick in when your monthly tax liability exceeds a threshold (typically $10,000 to $100,000 per month, depending on the state). States with prepayment requirements include California, Florida, New York, Texas, Illinois, and several others.
Prepayments are typically due mid-month (around the 15th to 25th) for tax estimated to be collected during the current month. The monthly return then reconciles the prepayment against actual collections, and any difference is paid or credited. Prepayment requirements primarily affect high-volume sellers and are uncommon for sellers collecting less than $10,000 per month in any single state.
Managing Multiple Deadlines
A seller registered in 10 states with monthly filing faces 120 deadlines per year. Adding in quarterly and annual states brings the total even higher. Managing this volume of deadlines requires a systematic approach.
Use a dedicated calendar. Create a calendar (Google Calendar, Outlook, or a spreadsheet) with every filing deadline for every state. Color-code by state or filing frequency. Set reminders 7 days and 1 day before each deadline. If you use a tax service like TaxJar or Avalara, the platform tracks deadlines and sends reminders automatically.
Batch your filings. Since most states share the 20th of the month due date, batch all your monthly filings together. Set aside one day per month (the 15th through 18th is ideal) to prepare and submit all returns. This concentrates the effort into a single session rather than spreading it across the month.
Automate wherever possible. TaxJar AutoFile and Avalara Returns file returns and submit payments automatically by the deadline. For sellers in 5+ states, the cost of automated filing ($25 per state per month) is easily justified by the time savings and the elimination of missed deadline risk. See our filing returns guide for details on the auto-filing process.
Monitor for frequency changes. States can change your filing frequency based on your sales volume. If a state moves you from quarterly to monthly, your deadlines increase from 4 to 12 per year in that state. Watch for correspondence from states about frequency changes and update your calendar immediately.
What to Do If You Miss a Deadline
If you realize you missed a filing deadline, file the return as soon as possible. Penalties accrue per month or fraction of a month the return is late, so filing one day late and filing 29 days late may result in the same penalty (one month's worth). However, the sooner you file, the sooner interest stops accruing on the unpaid amount. Most states also provide a grace period of 1 to 5 days for electronic filing system issues, though this does not apply to sellers who simply forgot.
If you have a clean compliance history and miss a deadline for the first time, consider calling the state's department of revenue after filing the late return to request penalty abatement. Many states will waive the penalty for a first-time late filing as a courtesy, especially if the amount is small and you have a history of timely compliance. Document the conversation and any reference number provided. See our penalties guide for details on the abatement process.