Child Support Calculator

Estimate child support payments using income shares and percentage of income models Free, fast, and private — runs entirely in your browser.

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Important Disclaimer

This is an estimate only. Actual child support is determined by your state court. Child support laws vary significantly by state and jurisdiction. This calculator provides a general approximation and should not be used as legal advice. Consult a family law attorney for accurate calculations specific to your situation.

Calculation Model

Parental Income

Parent 1 Gross Monthly Income

Parent 2 Gross Monthly Income

Children & Custody

Number of Children

Custody Arrangement

Additional Expenses

Monthly Childcare Costs

Health Insurance (Children)

Special Needs Expenses

Adjustments & Deductions

Support for Other Children (Monthly)

Existing child support obligations for other children

Tax Filing Status

Filing status may affect deduction adjustments

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How to Use Child Support Calculator

1Enter your values in the input fields.
2Adjust settings and options as needed.
3View your results instantly below.
4Copy or share your results.

Frequently Asked Questions

How does the Child Support Calculator work?▾

Enter your values into the calculator fields, and results update instantly. All calculations run in your browser — no data is sent to any server.

Is the Child Support Calculator free?▾

Yes, completely free with no sign-up required. Use it as many times as you need.

How accurate is the Child Support Calculator?▾

Our calculator uses standard formulas and up-to-date data. Results are estimates — consult a professional for decisions involving significant money or health.

Can I save my calculation results?▾

You can copy or screenshot your results. The calculator runs locally in your browser, so your data is never stored on our servers.

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About Child Support Calculator

Estimate child support payments using income shares and percentage of income models Free, fast, and private — runs entirely in your browser.

NexTool's Child Support Calculator is completely free to use with no sign-up required. Your data is processed directly in your browser and never sent to our servers, ensuring complete privacy and instant results.