You may also use this form to request a refund of estimated payment(s) for tax paid on resident members' shares of income if the PTE has decided not to make the entity election.
Form 511: if the PTE made an irrevocable election on Form 510/511D or 510/511E to remit tax with respect to all members' shares, stop; you must file Form 511.
Check or money order: Make check or money order payable to Comptroller of Maryland.
Schedule A: Computation of apportionment factor applies only to multistate pass-through entities.
Credits: You must file Form 510 electronically to pass on business tax credits from Form 500CR and/or Form 502S to your members.
| Question | Answer |
|---|---|
| Form Name | Form 510 |
| Form Length | 8 pages |
| Fillable? | Yes |
| Fillable fields | 850 |
| Avg. time to fill out | 60+ min |
| Edition | 07/25 |
| Where to send | Comptroller of Maryland, Revenue Administration Division, 110 Carroll Street, Annapolis, Maryland 21411-0001 |
| Matches the agency's file | Yes, checked October 1, 2026 |
| Other names | 510, Form 510, MD 510, Maryland 510, Maryland Form 510, Pass-Through Entity Income Tax Return |
| Official source | Form 510 (Rev 07/25), Comptroller of Maryland |
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