Maryland Non-Resident Taxes
You are considered a nonresident if you are legal resident of another state.
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).
Forms
Form 505 and Form 505NR
Reference
Part Year Resident
You are a part-year resident if you moved to Maryland and became a resident during the tax year or you moved out of Maryland and became a resident of another state.
If you either established or abandoned Maryland residency during the calendar year, you must file as a part-year resident, using Form 502. You may also be required to file a return with your other state of residence.
Forms
Form 502
Reference