Make a payment
Work it out Ngā tātaitai

Child support - liability/entitlement calculator

About this calculator

This calculator helps you estimate what you may pay or receive under the new child support formula from 1 April 2018 to 31 March 2019.

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

When to use this calculator

If you're a parent, use this calculator to work out the amount of child support you may pay or receive. You can:

  • enter up to two child support groups you're a part of
  • enter up to four qualifying children for each child support group
  • request a calculation when your qualifying child (or children) are in the care of a non-parent carer, eg, a grandparent.

Note: If any of the other parents have children in other child support groups, this calculator cannot take those children into account.

If you're a non-parent carer, eg, a grandparent, you can use this calculator to work out the amount of child support you may receive. You can:

  • enter up to two child support groups
  • enter up to four qualifying children in your care for each child support group
  • request a calculation for a child (or children) from only one parent.

Note: If any of the parents have children you don't care for in other child support groups, this calculator cannot take those children into account.

This calculator can't provide a calculation when there is an administrative review, court order or other child support arrangement in place administered by us, eg, a voluntary agreement.

What you will need
  • Total yearly income for both legal parents (estimates are fine as this is a guideline only).
  • The names, dates of birth and care details for each of the children you want to calculate child support for.
  • The names, dates of birth and care details for other children in each legal parent's care. These children must be the parent's children and cannot have child support paid or received for them. 

Note: To calculate recognised care (formally shared care) you can use the Child support - nights per year calculator.

We can't provide you with another person's details. If you don't know a parent's details you'll need to enter the information to the best of your knowledge.

After you finish

The results are within the nearest $10. You shouldn't rely on this as a guarantee of your future child support 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.