1) ALL your income while still a CA resident is taxable by CA.
2) For tax purposes, CA regards you as a resident until you change your domicile to another state. See "Change of Domicile" on page 10 of this CA tax publication for an explanation:
https://www.ftb.ca.gov/forms/2021/2021-1031-publication.pdf
3) After you become a non-resident of CA, CA can still tax your CA-source income. Income such as vacation pay and severance pay is considered CA-source income if it was earned by work performed in CA.
4) A capital gain from the sale of property located in CA is taxable by CA. If the home you sold was your principal residence for 2 of the 5 years leading up to the date of sale, you would qualify for a capital gains exclusion according to IRS rules.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
