Moving out of Maryland is easy. Stopping Maryland taxes is a different act, and it happens on paper: Maryland keeps treating you as a resident until the record shows otherwise.
On the burden of showing otherwise: AR 37 states that mere intent to treat a place as domicile is not enough — intent must be supported by action, with ties established in the new location while ties to Maryland are severed.
Two tests decide it. Cross 183 days with a Maryland abode still available and you are taxed as a resident regardless of where you claim to live — and see day-counting rules. Or keep the day count clean but leave the life-pattern evidence pointing at Maryland, and domicile does the same work. Everything on this page exists to answer one question: if Comptroller asks, does your record hold?