How do I apply to the Child Maintenance Service in the UK?
You apply online or by phone through the Child Maintenance Service at csa.gov.uk. There is a one-off application fee of £20 (waived for victims of domestic abuse and applicants under 19). You will need the other parent's National Insurance number if you have it.
How does the Child Maintenance Service calculate how much is owed?
The CMS uses the paying parent's gross weekly income from HMRC records as its starting point. It then applies a percentage based on the number of qualifying children: 12% for one child, 16% for two, and 19% for three or more. Shared care nights reduce the amount proportionally.
What is the difference between Direct Pay and Collect and Pay?
Direct Pay means the paying parent transfers money directly to the receiving parent. The CMS sets the amount but does not handle the money. Collect and Pay means the CMS collects and passes on the payments — this service costs an extra 20% surcharge on top for the paying parent and reduces the amount received by 4%.
Can I arrange child maintenance without using the CMS?
Yes. A family-based arrangement means both parents agree privately on an amount and frequency with no government involvement and no fees. The CMS strongly encourages this through its Child Maintenance Options helpline (0800 083 4375). A family-based arrangement is not legally enforceable through the CMS, however.
What enforcement tools does the CMS have if payments are missed?
The CMS can apply for a deduction from earnings order (DEO), which takes payments directly from the paying parent's wages. It can also apply to the Magistrates Court for a liability order, which enables further enforcement such as charging orders on property, clamping vehicles, or even committal to prison.
What can I do if the paying parent's income has changed significantly?
You can ask the CMS to carry out an annual review or request a variation at any time if there has been a change of 25% or more in the paying parent's income. The CMS will contact HMRC for updated figures. Unearned income such as rental income or dividends can also be included through a variation.
What happens if the paying parent is self-employed?
For self-employed parents the CMS uses income declared to HMRC through Self Assessment. If you believe declared income does not reflect the paying parent's true lifestyle you can request a variation for lifestyle inconsistency, and the CMS will investigate.
Is there any part of the CMS process that requires a solicitor?
The CMS application and all CMS-managed enforcement are fully self-service. You do not need a solicitor to apply, vary, or enforce a CMS arrangement. A solicitor may help if you wish to convert a CMS assessment into a court consent order as part of a broader financial settlement on divorce.
Where can I get free advice about child maintenance in the UK?
Child Maintenance Options (part of the government service) offers free, impartial guidance on all your options including family-based arrangements and using the CMS. Citizens Advice also provides free help with CMS applications and challenging assessments.
How does uplaw.ai help with child maintenance in the UK?
Tell us your situation — how many children you have, approximate income details, and how much shared care is involved — and uplaw.ai will walk you through the CMS application process, help you understand the calculation, and prepare any letters or variation requests you need.
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