US lawCaliforniaConstitutionArticle XIII31Cal. Const. art. XIII, § 31California Constitution Article XIII, Section 31Last amended: 1974Length: 26 wordsOfficial source The power to tax may not be surrendered or suspended by grant or contract. (Sec. 31 added Nov. 5, 1974, by Prop. 8. Res.Ch. 70, 1974.)PreviousCal. Const. art. XIII, § 30NextCal. Const. art. XIII, § 32