@Bksevers --
If your domicile (your main, permanent home) is in California, you remain a resident of California for tax purposes during temporary absences, and ALL your income remains taxable by California - regardless of where you earn it.
So if you're only going to be away for 3 months, there is no need to change your address for tax purposes. Your employer should continue to withhold California taxes.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
