If you do business in CA you're required to file as a foreign corporate entity, and still pay the $800 in taxes. You can't open a bank account in a CA bank without proving that you've made that filing.
> You can't open a bank account in a CA bank without proving that you've made that filing.
I have not found this to be the case, at all.
I did it less than a year ago with a Florida LLC. Walked into a California branch of a very large international bank and walked out twenty minutes later with a temporary ATM card and checks.
If your business is headquartered in another state I'm not sure why you'd need a California bank account unless you want to use a bank that only exists in California.