Cal. Civil Code § 1916 : Loan — California Civil Code — Obligations — Loan Of Money — Rate of interest deemed annual rate Date: 14 Sep 2016 TEXT PDF Current through the 2016 Legislative Session When a rate of interest is prescribed by a law or contract, without specifying the period of time by which such rate is to be calculated, it is to be deemed an annual rate. Ca. Civ. Code § 1916