Free UK Child Maintenance Calculator and Personalised Report
Shared care can reduce a child maintenance calculation when a qualifying child regularly stays overnight with the paying parent. The number of nights used for each child matters because different shared-care bands can produce different reductions. Evidence may include a court order, written agreement, calendar, school information or other records showing the established care pattern. Parents should check that the correct number of nights and the correct child have been included in the CMS decision.
A calculator provides an estimate, but it cannot examine every document, decision date, income issue or evidence gap in an individual case. The £9.99 CMS Clarity personalised report reviews the information you provide and explains the areas that may deserve attention, the evidence that may help and the practical routes available to you.
How the Child Maintenance Service calculates payments
Get a personalised review of your CMS position
A CMS calculation may not simply use the amount shown on a payslip after tax. The service generally starts with taxable gross income and then checks whether qualifying pension contributions or other children supported by the paying parent should affect the figure used. Variations may also be relevant where additional income, certain expenses, diverted income or other financial circumstances have not been reflected. A personalised CMS Clarity report helps identify which figures and evidence may need closer examination.
How shared care can affect child maintenance
How the Child Maintenance Service calculates payments
Use our free UK child maintenance calculator to estimate weekly and monthly payments based on gross income, qualifying pension contributions, other children and shared-care nights. For a deeper review, order a personalised CMS Clarity report covering income, evidence, shared care and practical next steps.
How the Child Maintenance Service Calculates Payments
How Shared Care Affects Child Maintenance
Pension Contributions and Child Maintenance
Other Children and the CMS Calculation
Is Your CMS Calculation Correct? Worked Examples
Child Maintenance Guidance