Yes. Per the state of Delaware, you must file a nonresident return if you have any gross income from Delaware sources.
State of Delaware
You must also file a Maryland return. Per the state of Maryland:
If you are a nonresident of Maryland, you are required to file Form 505 (Maryland Nonresident Income Tax Return) and Form 505NR (Maryland Nonresident Income Tax Calculation) if you have income derived from:
- Tangible property, real or personal, permanently located in Maryland;
- A business, trade, profession or occupation carried on in Maryland; or,
- Gambling winnings derived from Maryland sources.
State of Maryland
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