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Petition to Modify Child Support

Federal & State Law Editorial TeamLast reviewed: April 2026

Petition to increase or decrease child support based on a substantial change in financial circumstances of either parent.

PDF TemplateUse the instructions below to complete this form

Instructions

State the current support order amount and date. Document the substantial change in circumstances (job loss, significant income increase or decrease, change in custody arrangement, child's changed needs). Complete a new income declaration and child support worksheet. Many states require a change of at least 15-20% from the current order to qualify as substantial. Attach supporting financial documents.

This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.