Maryland 183-Day Rule Checker

This is close to a verbatim question the Comptroller's own published guidance addresses directly: unless you intended to sever ties with Maryland and establish a new domicile elsewhere, and that intent is shown by actually establishing the new domicile, you're still considered a Maryland resident and owe Maryland tax, regardless of how little you used the state during the year. Zero days present doesn't matter if your domicile never legally changed.

Maryland defines a day as any part of a day for purposes of the 183-day statutory residency threshold, so a few hours in the state on a given date generally counts as a full day. The one carve-out: a single continuous 24-hour period spanning midnight cannot be counted as more than one day, which prevents double-counting an overnight stretch. Combined with the requirement of a Maryland abode maintained more than six months, this makes Maryland's day count especially unforgiving for anyone splitting time between homes.

Not automatically. The Comptroller's guidance specifically addresses this: a residence used as a vacation home, or kept just to visit family and friends, does not by itself make you a Maryland resident. You'd still need to be physically present in Maryland for 183 days or more during the year for the statutory residency test to apply, so occasional visits to a lightly used vacation property generally stay under the threshold.

Yes. Maryland's own published example addresses this exact situation: a resident who takes up temporary residence in another state for a job while their spouse and children remain in Maryland does not lose Maryland domicile, and the fact that family stayed behind reinforces that Maryland remains the permanent home. You would owe Maryland tax on that income, though you can generally claim a credit for tax paid to the state where you worked.

Because a visa that legally requires you to leave the host country once your assignment ends prevents you from establishing a genuine new domicile there, according to Maryland's published guidance. A short-term, renewable work contract under a restrictive visa is treated as a temporary residence, not a domicile change, so you remain a Maryland resident and taxpayer for the duration, regardless of how long the overseas posting lasts.

Generally no. Maryland has reciprocal withholding agreements with Pennsylvania, Virginia, West Virginia, and the District of Columbia, so wages earned in one of those jurisdictions by a Maryland resident are exempt from that jurisdiction's income tax, and the reverse holds for their residents working in Maryland. West Virginia's agreement is broader than the others: it applies regardless of how many days a West Virginia domiciliary spends physically present in Maryland, while the Pennsylvania, Virginia, and DC agreements stop applying once a nonresident is physically present in Maryland 183 days or more.

In Comptroller of the Treasury of Maryland v. Wynne, the U.S. Supreme Court struck down a specific piece of Maryland's tax structure: it taxed residents on income earned in other states without giving full credit against the mandatory county piggyback tax, resulting in a form of double taxation the Court found unconstitutional under the dormant Commerce Clause. It matters today mainly as a reminder that Maryland's dual state-plus-county tax structure has real legal complexity, and that the credit-for-taxes-paid mechanics that resolve double taxation for residents working across state lines are not automatic or simple.