504: Maryland Fiduciary Tax Return (2025)
Maryland · Comptroller of Maryland · Used for tax years 2025
Maryland Form 504 is the 2025 fiduciary income tax return for estates and trusts. It reports income, Maryland adjustments, state and local taxes, credits, and payments to calculate a balance due or refund. It can also be used to amend a fiduciary income tax return.
What you'll need
Have your federal Form 1041 available. Form 504 asks for federal taxable income from line 23 and the exemption claimed on the federal return.
Depending on your return, you may also need:
- Form 504 Schedule A: For Maryland modifications and the nonresident beneficiary deduction.
- Form 504NR: Required for nonresidents.
- Form 504CG: Attach it when reporting net capital gain income subject to additional tax on line 10a.
- Form 502CR: Attach it for credits reported on line 15.
- Form 504CR and/or Form 502S: Attach the applicable forms for refundable credits reported on line 33. Form 504CR also supplies nonrefundable business tax credits for line 16.
- Maryland Schedule K-1 (510/511): Attach it for nonresident tax paid by pass-through entities reported on line 32.
Gather information about tax withheld, 2025 estimated payments, amounts applied from the 2024 return, and payments made with an extension request. For an amended return, attach supporting documentation and a copy of the amended federal Form 1041 if the federal return is also being amended.
How to file
Complete Form 504 using blue or black ink. Check the entity-type boxes that correspond to your federal return, complete the resident-status information, and sign and date the return. Nonresidents must include Form 504NR.
Mail to:
Comptroller of Maryland
Revenue Administration Division
110 Carroll Street
Annapolis, MD 21411-0001
Make any check or money order payable to Comptroller of Maryland. In blue or black ink, include the Federal Employer Identification Number, tax year, and tax type on the payment. The form marks where to staple the check.
Common mistakes
- Leaving payment details off the check or money order: The form warns that omitting the Federal Employer Identification Number, tax year, or tax type will delay payment processing.
- Omitting Form 504NR: Nonresidents must include it.
- Entering unclear or incorrect bank details: Verify that all direct-deposit account information is correct and clearly legible.
- Prorating ESBT income: Line 3 explicitly says not to prorate income from an Electing Small Business Trust.
- Missing amended-return steps: Check the applicable boxes, draw a line through any barcodes on the front, explain the changes, and attach the required documentation.
- Using another ink color: The form requires blue or black ink.
Questions people ask
Can I have my refund deposited directly into a bank account?
Yes. Check the direct-deposit authorization box and provide the account type, nine-digit routing number, account number, and names as they appear on the bank account. Check the separate box if the refund will go to an account outside the United States. Use Form 588 to split a direct deposit.
Can I apply an overpayment to next year's estimated tax?
Yes. Enter the amount to apply on line 37. Line 38 is the refund amount, calculated by subtracting line 37 from line 36.
What information is requested for a decedent's estate?
The form asks for the date of death, the decedent's Social Security number, and the decedent's domicile. It also has a box to mark a final return.
Can I authorize my preparer to discuss the return with Maryland?
Yes. Check the authorization box in the Signature and Verification section.