GOV.UK
Child maintenance calculator
You can use this calculator to estimate your child maintenance. It can help you to:
- agree an amount with the other parent if you’re arranging it yourselves
- get an idea of the amount the government would work out for you
The calculator gives an estimate. The exact amount the Child Maintenance Service calculates may be different.
Before you start
You need information about the income of the parent who’ll be paying.
If you already have a case and your circumstances have changed
If you have a child maintenance case and your circumstances have changed, contact the office managing your case. They’ll tell you if your child maintenance payments will change.
Don’t use the calculator if you have a ‘1993 scheme’ or ‘2003 scheme’ case. These are managed by the Child Support Agency (CSA).