Amending state taxes
I had originally talked to multiple tax places years ago and told that I dont apply for Safe Harbor residency for the state of Maine and multiple of my friends and coworkers that are also from maine said that I should qualify. This year I found it on Turbotax and filled it out and it seemed like it should apply to me. I'm a Maine state resident that is Active Duty military and only spends a few days a year in the state. My question is I have filed as a normal resident for the last 12 years and only get about 40% of my state taxes back every year, how many years back can I go and amend my taxes.