Michigan sales tax due dates fall on the 20th of the month after each reporting period for monthly and quarterly filers, and on February 28 of the following year for annual filers. Your reporting period is assigned by the state based on how much sales tax you owe in a year. Miss a due date and penalties start at 5% and climb to 25%, with interest running on top until the balance clears.1Michigan Legislature. MCL – Section 205.24 – Revenue Division of Department of Treasury (Excerpt)
How Michigan Sets Your Filing Frequency
Before the calendar matters, you need to know which schedule you’re on. Michigan assigns filing frequency by annual sales tax liability:2Michigan Legislature. MCL – Section 205.54t – General Sales Tax Act (Excerpt)
- Monthly if your annual tax liability exceeds $720
- Quarterly if your annual liability is between $108 and $720
- Annual if your annual liability is under $108
The state notifies you of your assigned frequency. If your sales grow and push you into a higher bracket, expect to be moved to more frequent filing.
Monthly, Quarterly, and Annual Due Dates
Monthly returns are due by the 20th of the following month. January’s return is due February 20, February’s is due March 20, and so on.
Quarterly returns follow the same 20th-of-the-next-month pattern after each quarter closes. The first-quarter return (January through March) is due April 20, the second quarter is due July 20, the third quarter is due October 20, and the fourth quarter is due January 20.
Annual filers have until February 28 of the year after the tax year to file and pay.3State of Michigan. Filing and Payment Due Dates Every business, whatever its frequency, also submits an annual return in addition to any periodic returns.
When the 20th (or February 28) lands on a Saturday, Sunday, or legal holiday, the deadline shifts to the next business day.4State of Michigan. Filing Deadlines If your payment isn’t postmarked or received by that adjusted date, penalty and interest begin running right away.
Pay By The 12th For A Bigger Discount
Michigan offers a discount on tax remitted early. The discount applies to two-thirds of the 6% sales tax you send in, and the amount depends on when the payment arrives:5State of Michigan. 5096 Sales, Use and Withholding Taxes Instructions
- Paid by the 12th of the month: 0.75% of two-thirds of the tax, capped at $20,000 per period
- Paid between the 13th and the 20th: 0.5% of two-thirds of the tax, capped at $15,000 per period
For small monthly filers with tax under roughly $1,200, the discount is a flat $6 rather than the calculated percentage. The dollars are modest per period, but they compound across a year of filings, and the 12th is the date that unlocks the larger version.
What Happens If You File Or Pay Late
Miss the deadline and the penalty starts at 5% of the unpaid tax for the first two months. After that, another 5% is added for each additional month the tax is unpaid, up to a 25% cap.1Michigan Legislature. MCL – Section 205.24 – Revenue Division of Department of Treasury (Excerpt)
Interest runs separately on top of the penalty. The rate is one percentage point above the adjusted prime rate, calculated monthly. Treasury sets the adjusted prime rate by averaging the prime rate charged by at least three major commercial banks over the prior six-month period and updates the rate twice a year: the rate based on the period ending March 31 takes effect July 1, and the rate based on the period ending September 30 takes effect the following January 1.6Michigan Legislature. MCL – Section 205.23 – Revenue Division of Department of Treasury (Excerpt) Interest accrues from the original due date until the tax is paid in full.
Unpaid sales tax can also become a lien on your real and personal property. The lien attaches as of the date the return was originally due, takes priority over most later-recorded liens, and lasts seven years, with the state able to extend it another seven.7Michigan Legislature. MCL – Section 205.29 – Revenue Division of Department of Treasury (Excerpt)
Asking For A Penalty Waiver
If a legitimate reason caused the late filing or payment, you can ask Treasury to waive the penalty. The request must be in writing and must show reasonable cause. Treasury considers circumstances like serious illness or death in your immediate family, a fire or natural disaster, and criminal acts committed against you or your business.8State of Michigan. How Do I Request a Penalty Waiver? Bring documentation.
A penalty waiver is not an interest waiver. Even when Treasury removes the penalty, interest on the unpaid tax typically continues to apply. Not knowing the rules or making an honest mistake generally will not qualify.
Extensions Do Not Push The Payment Deadline
Extensions for sales tax returns are not routinely granted. Sales tax is money you collected from customers on the state’s behalf, so Treasury expects it remitted on time regardless of your circumstances. Even where extra time is granted to file the return, the tax payment is still due by the original deadline. An extension to file is never an extension to pay.9State of Michigan. Form 4, Instructions for Application for Extension of Time to File Michigan Tax Returns
If you genuinely cannot file on time, contact Treasury before the deadline. Waiting until after the due date to explain the situation almost always results in penalties.
If You’ve Already Missed Filings For A While
A business that has been operating in Michigan without collecting or remitting sales tax can come forward through the Voluntary Disclosure Program. Treasury waives all penalties and limits the lookback to 48 months, so you owe back taxes and interest for at most four years instead of the entire period of noncompliance.10Michigan Legislature. MCL – Section 205.30c – Revenue Division of Department of Treasury (Excerpt)
You have to apply before Treasury contacts you. Once the department has sent a notice of audit, an assessment, or a final letter of inquiry, the program is off the table. A preliminary informational letter does not disqualify you, but anything beyond that does. For businesses that recently discovered a Michigan filing obligation and want to catch up, this is the route that keeps the penalty column at zero.