
Maryland Tax Extension: Deadlines, Rules, and How to File
Everything you need to know about filing a Maryland tax extension.
Your Takeaways:
Maryland Tax Extension Quick Facts
- Extension length → 6 months
- Filing deadline → October 15
- Payment deadline → April 15
- Federal extension → accepted if no tax due
- Extension form → not required in most cases
- Payment voucher → Form PV
Maryland grants a 6-month extension to file, moving the deadline to October 15. However, you must pay at least 90% of your state tax by April 15. If you filed a federal extension and owe no Maryland tax, the state extension is automatic. If you owe tax, you must submit Form PV with your payment. |
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Filing for a Maryland extension gives you more time to file without penalties.
But remember, while the filing deadline may be extended, you still need to pay at least 90% of your estimated taxes by the original April 15th deadline to avoid penalties.
Knowing the process and rules will help you stay compliant and avoid costly mistakes.
Maryland Tax Extension Requirements
What is an Extension?
An extension gives you more time to file without penalties for late filing. But this extension does not extend the deadline to pay any taxes due. If you need more time to file in Maryland, you can request a 6-month extension. This applies to residents and non-residents who file Form 502 or 505 income tax returns.
Maryland Tax Extension Deadline and Payment Rules
- Deadline: The deadline to file a Maryland tax extension is April 15th, the same as the original due date for your state return.
- New Deadline: Once granted, your new filing deadline will be October 15th, giving you six additional months to submit your return.
- Payment Requirement: To qualify for the extension, you must have paid at least 90% of your Maryland tax liability by the April deadline.
- Federal Extension: If you have filed a federal extension (Form 4868) and owe no state taxes, you will automatically receive the six-month Maryland extension and do not need to file Form PV. However, if you owe state taxes, Form PV must be submitted with your payment.
Do You Need to File a Maryland Extension Form
You must file Form PV if:
- You expect to owe Maryland tax
- You did not file a federal extension
- You want confirmation of the extension with payment
You do NOT need to file Form PV if:
- You filed a federal extension
- You expect a refund or owe zero state tax
How to Request an Extension in Maryland

How Do I File a Maryland Tax Extension?
Here's how you can file your Maryland state tax extension:
Step-by-Step Process:
1. Complete the Personal Payment Voucher (Form PV):
- Ensure you complete all sections, including your Social Security number, address, and payment amount. Here are the full instructions for form PV.
2. Make payment:
- Ensure you've paid at least 90% of your tax liability as shown on your return. Payment can be made online via Maryland's tax payment portal or by check/money order using Form PV if you're mailing it. If using the online portal, you will need to use your email address to log in.
3. Submit the Form and Payment:
- Online submissions must be completed by 11:59 PM on April 15th, while mail-in forms must be postmarked by this date.
- Send your completed Form PV and payment to: Comptroller of Maryland, Payment Processing, PO Box 8888, Annapolis, MD 21401-8888
4. Keep Records:
- Keep copies of all forms and proof of payment for your records. The state will notify you only if your extension gets denied.
Note: If No Tax is Due and Didn't File a Federal Extension
- File Maryland state tax extension online or via phone (410-260-7829). No need to submit Form PV.
Special Cases for Extensions
Combat Zone Extension
Maryland offers a six-month extension for filing and paying taxes for military personnel and support staff stationed in a designated combat zone. If you are affected, simply enter code 912 in the code number box on your tax return. For more information, visit the Internal Revenue Service website.
Estate Tax Extension
If you are required to file a Maryland estate tax return, you may request an extension of up to six months. However, if you are outside the U.S., the extension can be up to one year.
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
- Florida tax extension
Conclusion
A Maryland tax extension gives you more time to file, but not more time to pay. Many states, including Connecticut, follow similar extension payment rules. You still need to pay your taxes by the deadline, even if you file later.
Pay at least 90% of your taxes by April 15th to avoid penalties. Follow the steps above to file your extension correctly and avoid state tax issues.
Work with Our Experts!
While state extensions are easy, federal extensions can be complicated. You don't have to do it alone—work with our tax pros to ensure everything is filed correctly and on time. Start your tax extension today!
Key Maryland Extension Rules
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Maryland General Fund Summary (Fiscal Year 2024)


Maryland's total revenue was $25.5 billion for FY 2024, mostly from personal income tax ($13.6 billion) and sales tax ($5.9 billion). However, appropriations totaled $27.4 billion, so we had a $1.9 billion deficit. This shows that we need to keep working on managing our expenses and revenue streams.
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Frequently Asked Questions
Frequently Asked Questions
Yes, you must pay at least 90% of your total tax liability by the original deadline. The extension only applies to filing the return, not the payment due.


