Civil Code section 3289

(a)

Any legal rate of interest stipulated by a contract remains chargeable after a breach thereof, as before, until the contract is superseded by a verdict or other new obligation.

(b)

If a contract entered into after January 1, 1986, does not stipulate a legal rate of interest, the obligation shall bear interest at a rate of 10 percent per annum after a breach.
For the purposes of this subdivision, the term contract shall not include a note secured by a deed of trust on real property.

Source: Section 3289, https://leginfo.­legislature.­ca.­gov/faces/codes_displaySection.­xhtml?lawCode=CIV§ionNum=3289.­ (updated Jun. 23, 1986; accessed Jun. 25, 2025).

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Verified:
Jun. 25, 2025

§ 3289's source at ca​.gov