What Happens If You Don't File Taxes in Maryland?
Missing Maryland tax return deadlines triggers penalties, interest, and eventually collection by the Comptroller or Central Collection Unit. Here's what actually happens — and how to fix it.
Missing a Maryland tax filing deadline isn't the same as getting away with it. The Maryland Comptroller's office matches federal W-2 and 1099 data against state returns, which means they usually know you had income even when you didn't file. When they figure that out, the process moves on its own schedule — and it's rarely in your favor.
Here's what actually happens when Maryland tax returns go unfiled, and what you can do about it.
The Penalty Structure
Maryland charges two main penalties for missed returns:
Failure-to-file penalty: 25% of the tax owed if you don't file within 60 days of the due date.
Failure-to-pay penalty: 25% of the unpaid tax if you don't pay by the deadline.
These stack. If you neither filed nor paid, Maryland can assess up to 50% of your original tax liability in penalties alone — before interest, which compounds monthly.
The interest rate on unpaid Maryland taxes is set each year and typically runs 10–13% annually. It accrues from the original due date forward, regardless of when you file.
What Maryland Does When You Don't File
The Comptroller's office issues initial notices requesting the unfiled return. If you don't respond, they estimate your tax liability — usually on the high side, using income data from your W-2s and 1099s without any deductions or credits.
If the estimated assessment goes unpaid, the account can be referred to the Central Collection Unit (CCU), Maryland's debt collection division. The CCU adds its own collection fee — currently 17% of the total balance — on top of everything else. Once a case reaches the CCU, your balance is typically meaningfully larger than the original tax owed.
Beyond the CCU, the Comptroller can:
- File a Maryland tax lien on your property
- Intercept your state income tax refunds from future years
- Initiate wage garnishment through the courts
- Suspend professional licenses in some cases
The IRS Connection
Maryland uses federal income data to identify unfiled state returns. If you're in IRS trouble for the same years, resolving federal and state separately — with different timelines — often means one escalates while you're dealing with the other.
The most effective approach is to address both simultaneously.
Voluntary Filing vs. Waiting for Maryland to Catch Up
Filing late on your own — even years late — is almost always better than waiting for Maryland to file an estimated assessment. When Maryland files for you, they don't give you credit for your deductions, exemptions, or credits. The resulting bill is often dramatically overstated.
When you file voluntarily:
- You control the accuracy of the return
- You can claim every deduction and credit you're owed
- Penalty abatement requests are more likely to succeed when you initiated compliance rather than responding to enforcement
- You eliminate any potential criminal exposure for willful failure to file
Criminal Exposure
Failure to file a Maryland tax return when you have a filing requirement is a misdemeanor under Maryland law. Criminal prosecution is rare for modest amounts and first-time situations, but it is a real possibility for repeated noncompliance or large outstanding balances. The simplest way to eliminate this risk is to file.
What to Do
If you have unfiled Maryland returns — whether one year or several — the path forward is:
- Gather your income documents for each missing year. If you don't have them, many can be reconstructed from federal transcripts or employer records.
- Prepare and file the returns, claiming every deduction you're entitled to.
- Address any resulting balance through the Comptroller's installment program or, if appropriate, Maryland's own Offer in Compromise program.
- Request penalty abatement if you qualify, which can significantly reduce the total owed.
If you have both Maryland and IRS unfiled returns, handle both at the same time. Resolving one while the other continues to accrue penalties and interest defeats the purpose.
DMV Tax Resolution handles Maryland state tax issues alongside federal IRS resolution for clients throughout MD, DC, and Virginia. Schedule a free consultation.