For California income tax, If I spent 141 days in the state but actually moved out of state on July 18, am I a California resident for purposes?

If you made a permanent change of residency to another state in July 2024, then you would file a Resident return for your new state and a Part-Year resident return for California. You would normally file the current resident state (if it has an income tax) last. You may be able to get a credit for your new state for tax paid to California if duplicated.

Residents of California are taxed on ALL income, including income from sources outside California. Nonresidents of California are taxed only on income from California sources. Nonresidents of California are not taxed on pensions received after December 31, 1995. For more information, get FTB Pub. 1005, Pension and Annuity Guidelines. Part-year residents of California are taxed on all income received while a resident and only on income from California sources while a nonresident.

See this California FTB publication for more information about determining resident status in California.