If you're moving abroad and want to stop filing state income taxes, you generally need to abandon your state domicile — the state you consider your permanent home — before you leave. Domicile is different from physical presence: you can be absent from a state for years and still be considered domiciled there if you intend to return and have kept ties there. To clearly abandon domicile, you should cancel your driver's license, close local bank accounts, sell your home or end your lease, change your voter registration, and update all your records (insurance, professional licenses, documents) to a new address outside that state. Some states — particularly California — have an aggressive audit process for high earners who claim to have left, and they look closely at whether the departure was genuine. Establishing domicile in a no-income-tax state like Florida or Texas before moving abroad can be a cleaner option if you plan to eventually return to the US.