2026 Child Support Calculator

Important

This tool provides an estimate only and does not constitute legal advice. Actual child support can differ based on deviations, credits, and case-specific factors under RCW 26.19.

If combined net is under $2,200, courts conduct a case-specific review; a $50/child minimum is presumed (subject to exceptions).

If your combined income falls between two rows in the state’s chart, the calculator estimates what the number would be in between.

Add-ons (health insurance, daycare), the 180% self-support reserve, and judicial deviations can change results.