Don't know about Cali, but, generally, if you set up a corporation, partnership, etc., you've just made that entity pay the tax, rather than yourself. For federal income tax purposes, corporations are subject to a 21% tax rate, so if Cali follows that system you might save some money initially... but keep in mind if you ever take your profits out that will be subject to a second tax, possibly at a 37% rate. And that 21% rate could be going up in the near future thanks to our good business-friendly friend who was just elected president. So be forewarmed...