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Child Support in California

How support is calculated, modified, and enforced — from guidelines to college expenses.

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When Does Child Support End in California? (2026 Guide)

Child support in California ends at age 18, or 19 if the child is still in high school. Learn exceptions, termination steps, and arrears rules under Family Code § 3901.

Antonio G. Jimenez, Esq.·17 min read

Guide

California Child Support Calculator: Complete 2026 Guide to Guideline Calculations

Use California's child support calculator with the 2026 SB 343 formula updates. Learn the K-factor formula, net income deductions, and mandatory add-ons.

Antonio G. Jimenez, Esq.·17 min read

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The Divorce Process Property & Asset Division Child Custody & Parenting Alimony & Spousal Support Special Circumstances Financial Planning Life After Divorce Practical Guides & Checklists Prenuptial & Postnuptial Agreements