Child Support Calculator

Child support paid by one parent to the other parent for the support of their child / children following separation. To find out more about the divorce process in Australia, please contact our team of expert family lawyers at Mathews Family Law.

Parents Information

Parent 1(You)
Number of Children to
calculate support for
Parent 2(Other Parent)

Parents Income Information

Please enter your Income Information and other Parent’s income information below. Without the other parents information child cupport estimate may be incorrect.

Annual income amount Parent 1 Parent 2
Taxable Income ($)
Reportable fringe benefits ($)
Net rental property losses ($)
Tax free pensions & benefits ($)
Foreign income ($)
Total taxable income ($)

Income Support Payments

Did you or the other parent recieve an Income Support Payment during the last financial year ?
Income Support Payment includes pensions, carrer support payments and disability support pensions. It also includes payments from the Department of Veteran’s Affairs such invalidity service pension, partner service pension, Defence force income support allowance and income support supplement.

Parent 1 Parent 2
Recieved Income Support Yes

Childern’s Information

Please enter the number of night each child is in your care. You can enter it with by selecting proper frequency eg: Per Week, Per Fortnight, Per Month or Per Year.

Child’s Name Date of Birth
Nights of Care
(0 to 365)

Child Support Estimate Summary

Cost of Childern

Calculation Details


Taxable income ($)
Self Support Amount (-) ($)
Child Support ($)
Combined Child Support
Income(Parent 1 + Parent 2) ($)
Child Support Income (%)

Child Support Care Details






Child Support Percentage

Disclaimer : The information on the Mathews Family Law & Mediation Specialists website is a summary of matters relevant to family law. The information is not intended to be, nor should it be relied on, as a substitute for legal advice.

Child support may be paid by way of:

1. Cash payments; and / or
2. Non cash / periodic payments (for example, rent, utilities).

The amount of cash child support to be paid is determined by:

1. The Department of Health & Human Services (DHHS) administrative assessment process; or
2. A private agreement between the parents.

The amount of non-cash / non-periodic child support to be paid is usually determined by private agreement between the parents.

The amount of cash child support to be paid is determined by a number of factors such as: the income of both parents, the children’s living arrangements and the number and age of the child / children.

If you would like an estimate of the amount of cash child support the DHHS may assess you as having to pay or receive, based on a standard, non-complex, scenario, pleaea refer to the Child Support Calculator on this page. The Calculator is based on the 8-step formula laid out by the DHHS.

How Are Child Support Payments Made:

  • Periodic Payment
  • Non-periodic payment
  • Lump sum payment
  • Non-agency payment

Learn more about child support here.

How is Child Support Calculated?

The Child Support Calculator will assist you in calculating the amount of child support you may be eligible to receive or obliged to pay.

To use the Child Support Calculator, insert the information requested and allow the calculator to estimate your child support entitlement or obligation. All input fields are required to receive an estimate. Further child support information and calculators are available at

There are situations when the child support calculator may not offer a reliable estimate, such as:

  • When parents have multiple child support arrangements already in place.
  • Parents have additional children in their care at home.
  • When children have additional expenses, for example, health or education.
  • When a parent incurs significant travel costs for the purpose of spending time with the child / children.

If you are looking for specialist child support lawyers in Melbourne, we have some of the most experienced lawyers to help you. Our team of family lawyers can also assist you in matters relating to property settlement, spousal maintenance, consent orders, Divorce Lawyers and much more. For expert family law advice, please contact us to arrange a free initial telephone consultation.