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Get a driver’s license and an address in a state with no income tax: Washington, Nevada, Texas, Florida, etc. It’s not hard to do but you need to plan a little bit if you want to move overseas long enough that the FEIE will kick in.

Some states hold on to former residents harder than others: California and Virginia are notorious for trying to continue taxing people who leave. How you deal with this will depend on individual circumstances. Get professional tax advice if you expect problems with state tax authorities.