Maryland Tax Extension Rules and Filing Deadlines

Maryland gives you six more months to file, and if you expect to owe nothing you may not have to ask for them at all.

Maryland separates the two halves of this cleanly. The extension buys filing time. The Comptroller is direct that "it does not provide an extension of time to pay any tax that may be due."

This page covers Maryland individual income tax for filers submitting a Maryland tax return. For the federal side of the process, see our guide to filing a tax extension, and for everything else Maryland, see the Maryland state tax guide. For other states, start at the state tax extension hub.

How Does a Maryland Tax Extension Work?

The Comptroller states the baseline in one line: "an individual may obtain an automatic six-month extension to file the Maryland income tax return." That filing extension moves the extended filing deadline to October 15, 2026, and the request itself is due on or before April 15.

Form PV Has Replaced Form 502E

Start here, because the form name changed and the old one is still everywhere.

Maryland's payment voucher worksheet states it plainly: "Form PV has replaced the extension Form 502E." Older Comptroller guidance and most competitor pages still say 502E, so a filer searching for it will find references to a form that is no longer the current one.

When You Do Not Need to File Anything

One combination gets you out of the paperwork, and both halves have to be true.

Maryland's rule: "if no tax is due and the individual has obtained an extension with the Internal Revenue Service, then the individual does not have to request a separate Maryland extension or file Form 502E." The regulation puts the same test as two conditions: you expect to owe no tax for the taxable year, and you have filed IRS Form 4868 with the IRS.

Miss either one and a Maryland filing extension request is required. Three situations call for one: tax is due, you want more than six months, or you owe nothing but never obtained a federal extension.

The Payment Goes With the Application, Not After It

Worth reading twice, because it differs from how several filers assume an extension works. Maryland's regulation states that "full payment of the expected tax due is required with the filing of the application."

The application and the money travel together. Sending the request now and the payment later does not satisfy the rule.

Maryland Will Go to Twelve Months, If You Are Outside the United States

Six months is the ordinary ceiling. There is one route past it, and it is narrow.

The Comptroller's guidance: "an individual, who is outside of the United States, may request an extension for more than six months, but this extension cannot exceed twelve months." It requires reasonable cause, so it is a request rather than an entitlement, and it goes on the paper form rather than through the web or telefile route.

Anyone inside the United States is capped at the six months, however good the reason.

How Do You File a Maryland Tax Extension?

Step 1: Work out your estimated tax liability

Add up your Maryland withholding and any estimated tax payments already made, then set that against your expected Maryland tax for the year.

If the answer is zero and you hold a federal extension, you are finished. Nothing goes to Annapolis.

Step 2: Pay the expected tax by April 15, 2026

If you do owe, the extension payment is due on the original filing deadline. The Comptroller is explicit about the consequence: "a taxpayer must make full payment of the tax by the original due date of the return, otherwise, interest will accrue until the tax is paid and a penalty may be assessed."

Step 3: Request the extension, by web, phone or form

Maryland gives you three ways to do this. An individual can request the extension through the Comptroller's website, or by telefile on 410-260-7829 from central Maryland. Electronic filing handles the request and the payment together.

The paper form is the route you need if you are asking for more than six months. Use the current Form PV rather than the superseded 502E.

Step 4: Keep the payment confirmation and file by October 15

Hold your payment confirmation with your records, then file the Maryland tax return by October 15, 2026.

How Much Should You Pay With an Extension?

Pay the whole expected balance. Maryland's regulation asks for full payment with the application rather than a percentage of it, so there is no threshold to aim at and no partial-payment safe harbor to rely on.

Interest accrues from the original due date until the tax is paid, and a penalty may be assessed on top.

Our penalty and interest calculator can help you estimate what a shortfall would cost.

Maryland Sets Its Interest Rate Once a Year

Maryland does not track a federal figure or reset quarterly. Administrative Release 14 describes the mechanism: the Comptroller determines the annual interest rate for the following calendar year on or before October 1 each year.

Because the rate is fixed annually and announced in the fall, the figure that applies to a balance carried from April 2026 is set before that tax year begins. Check the Comptroller's current published rate rather than carrying one forward from another year or another state.

Maryland Business Tax Extension Basics

Corporations, partnerships and multi-member LLCs extend their federal return on Form 7004. Maryland runs its own extension route for Maryland business tax returns, and the Comptroller's website and telefile service both accept business requests, with fiduciary filers the exception.

The payment rule above applies here too. How Form 7004 works and which deadline attaches to which entity are covered on the business extension guide.

Do Military Servicemembers Get More Time to File in Maryland?

Servicemembers stationed overseas have a route that other Maryland filers do not.

Serving Outside the United States Opens the Twelve-Month Door

Maryland's military service extension works through geography rather than through service status. The beyond-six-months provision turns on being outside the United States, and a servicemember stationed abroad meets that test, which puts the twelve-month ceiling within reach on a paper request with reasonable cause.

The combat zone tax extension page covers the federal combat zone rules, which run on their own terms and are more generous again for anyone who qualifies for them.

Common Maryland Extension Mistakes to Avoid

• Assuming Form 4868 covers you. It does only if you also expect to owe Maryland nothing. A balance means a Maryland request.
• Sending the application without the payment. Maryland requires full payment of the expected tax with the application itself.
• Looking for a percentage threshold. Maryland asks for the full expected amount rather than 90 percent of it.
• Expecting more than six months while in the United States. The longer extension is only for individuals outside the country.
• Treating the twelve-month extension as automatic. It requires a paper request and reasonable cause.
• Using Form 502E. Form PV replaced it. Older guidance and competitor pages still name the old form.
• Landing in the wrong system. SDAT's Extension Request Application covers the Annual Report and personal property tax return for businesses, not individual income tax.
• Overlooking disaster relief. When a declaration covers part of Maryland, additional time may be available. Check the Comptroller for current notices.
• Missing April 15 for the request itself. The extension request is due on or before the original filing deadline.
• Carrying over last year's interest rate. Maryland resets it each year, announced by October 1 for the year following.

Compare Maryland Extension Rules

You may also want to review the nearby state extension rules:

• Virginia tax extension
• Pennsylvania state tax extension
• Delaware tax extension rules
• West Virginia extension deadline

Filing Your Maryland Extension

Maryland's version of this is short once you know which box you are in. Work out whether you owe. If the answer is nothing and you hold a federal extension, you are already done. If you owe, send the full expected amount with the request by April 15, using the website, telefile or Form PV, and file the return by October 15. If you are abroad, the paper request is the route that can reach twelve months.

File your federal extension with FileTax.com and we will walk you through the federal side, which is what decides whether Maryland needs anything from you.