[blahneverdies]

Not sure why this was down-voted, but this has been one of my concerns about ever moving to CA in the first place--I wouldn't want to be stalked by this predatory creature for the rest of my life. (And have already experienced this to a lesser degree with a couple of other-coast states.)

[Keverw]

Yeah, I was wondering how that'd apply to getting accepted in YC... Maybe you intend to go back home after the 3 months or locate to another city big in tech like Austin or Boston. Wonder if California would try to say you were a resident, however I feel like YC would be more similar logically to how college students are treated since usually you are still a resident of where your parents live, unless you intend to get a job and live where you went to school after graduation.

[toast0]

In that case, if it comes up, I think California would be looking at your living situation: are you in a temporary living situation, like a long term stay hotel, or did you rent an apartment and move your stuff. Did you forward your mail and change your accounts? Are you visiting home, or are people visiting you in California. What did you actually do after the YC period, etc.

If you're living and working in California, there's not a whole lot of difference in taxation between a part-year resident and a non-resident who happens to be working in the state often; it's more of a problem when California considers you a full year resident and you're actually working somewhere else. For residents, during the period of residency, all income is treated as California source income, but for non-residents, California only taxes income that is actually from a California source (basically earned income from working in California, or gains on property in California).

Even if you're considered a resident during YC, you wouldn't be taxed on non-California source income before you moved in, or after you moved out. It's usually not a problem when you legitimately move; it's more of a problem when you keep a house in California, and visit frequently, and still get your hair cut in California, still vote in California, etc... Or in the case that you move overseas --- there's a presumption for US citizens that an overseas move is not a permanent move, and that when you come back, you'll return to the last state that you resided in, and many states with all-source taxation for residents will make a strong suggestion that you're still a resident, until you establish residency in another state.