Our family money calculators estimate child maintenance using the CMS rules, the Tax-Free Childcare top-up you can get and the High Income Child Benefit Charge, so families can plan their budget.
Every calculator on Poundsum is free, works on your phone, and runs in your browser, so the numbers you type are never sent to us. Each one explains how the result is worked out and links to the official GOV.UK source.
All family money calculators
- CalculatorChild Maintenance Calculator UKEstimate weekly and monthly child maintenance using the CMS rules.
- CalculatorTax Free Childcare CalculatorHow much the government adds to your childcare costs, and who qualifies.
- CalculatorChild Benefit Tax CalculatorThe High Income Child Benefit Charge and how much Child Benefit you keep.
How we keep the figures right
UK rates change every April, and sometimes in between. We check every figure against GOV.UK and HMRC when the new tax year starts and whenever the government announces a change. Each calculator page shows the date it was last checked.
Our results are estimates to help you plan. For decisions about your own money, check with the organisation involved or a qualified adviser. Read our disclaimer for more.