This is a common question for “snowbirds”, those who alternate between residences depending on the season. Luckily, the answer is fairly straight forward, the residence which is your primary residence, in that it is where you file your taxes, is the residence that is used to determine your premium payments. Time spent in each residence is not a factor. If you move after your policy is active, in that you change your primary residence, you could see a change in your premium payments. Every state has different “area factors” associated with the medical costs of that state, so your rates could go up, go down, or stay the same, depending on the area factors of the state you previously lived in and the state you are moving to. Visit ManhattanLife's Medicare Supplement for plan information.