California Child Support Calculator

Estimate monthly child support payments using the California Guideline formula (Family Code §4055). Free, no sign-up required.

This calculator estimates child support based on the California guideline formula. Enter your financial information below for an approximate calculation.

Parent 1 (you can assign either parent)
Parent 2

% of time child spends with Parent 1

How This Calculator Works

This calculator uses the California guideline formula established in Family Code §4055. It estimates each parent's net income (after estimated taxes and deductions), applies the income shares model, adjusts for parenting time, and calculates the base support amount. Health insurance and childcare costs are added proportionally.

Reference: California Family Code §§4050-4076 | CA Child Support Services

⚠️ Important Notes

  • This is an estimate only. Actual court-ordered support may differ.
  • The court may deviate from the guideline for high-income parents (combined net income over $10,000/month).
  • Tax deductions are estimated — actual tax situations vary.
  • Consult a licensed California attorney for legal advice about your specific situation.

Related Resources

⚠️ Legal Disclaimer

The information on this website is for general informational purposes only and does not constitute legal advice. No attorney-client relationship is formed. You should consult with a licensed attorney in California for advice regarding your individual legal situation. We make no representations about the accuracy or completeness of the information on this site. Your use of this website or its tools does not create an attorney-client relationship.