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Work it out
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Child support liability calculator

 

About this calculator

This calculator is used to work out your child support liability. It will take 5 minutes to complete.

Use of this tool does not result in data being submitted to us.

When to use this calculator

Use this calculator as a guideline only, based on the taxable income you enter and the child support formula assessment.

What you will need
  • Your total income for the year.
  • The number of children you are paying for.
  • The number of children you have in your care. 
  • Whether or not you have a partner.
After you finish

The calculation is a guideline only, based on the details you provided.

This does not take into account estimations of income, multiple shared custody, split custody, or other special circumstances.

If you think your calculation differs from what we have sent you in your assessment letter, please contact us to discuss your assessment.

 

No information you provide while using the calculator is recorded, saved or in any way referenced by Inland Revenue. The calculator is stored on a secure part of our website to prevent unauthorised interception. If you are unable to access the calculator, you may need to update your browser and/or firewall settings.