# Written contract · California — Civil statute of limitations by state and type of claim For Written contract · California, limitation period is Within four years; section is 337; how the statute describes it is An action upon any contract, obligation or liability founded upon an instrument in writing, verified against its source on 2026-08-25. - **Type of claim:** Written contract _(our reading, not quoted from the source)_ - **State:** California _(verified: appears in the quote below)_ - **Limitation period:** Within four years _(verified: appears in the quote below)_ - **How the statute describes it:** An action upon any contract, obligation or liability founded upon an instrument in writing _(verified: appears in the quote below)_ - **Section:** 337 _(verified: appears in the quote below)_ ## What the source says > 337. Within four years: (a) An action upon any contract, obligation or liability founded upon an instrument in writing, except as provided in Section 336a; ## Source - https://leginfo.legislature.ca.gov/faces/codes_displayText.xhtml?lawCode=CCP&division=&title=2.&part=2&chapter=3&article= Last verified: 2026-08-25. Review by: 2027-08-25. Part of [Civil statute of limitations by state and type of claim](https://referencesource.org/state-civil-statute-of-limitations/).