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Everything you need to know about the UK Child Maintenance Service

16 articles

How It Works
How It Works13 min read

How Long Does the CMS Take? Realistic Times for Each Stage

4 to 12 weeks for a calculation, 6 to 8 for a deduction from earnings, up to 18 months for a liability order. What to do when yours overruns.

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How It Works12 min read

Child Maintenance in Scotland, Wales and Northern Ireland

The formula is identical across the UK. But Northern Ireland runs a separate service, and in Scotland a child aged 12 can apply for maintenance themselves.

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How It Works9 min read

Who Actually Runs the CMS? The Names and the Chain

The CMS is not an agency. It is a directorate inside the DWP, and a named minister answers for it in Parliament. Who is accountable, and how to reach them.

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How It Works9 min read

Can the Other Parent Spend Child Maintenance on Themselves?

There is no legal duty to account for how child maintenance is spent, and the CMS cannot investigate it. What the law actually says, and why it was built that way.

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How It Works18 min read

CMS Statistics: 1.1m Children and £791m Still Unpaid

The latest DWP figures on compliance, arrears and enforcement, and what they reveal about a system where a fifth of paying parents hand over nothing at all.

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How It Works14 min read

Inside the CMS: The Ageing Tech Behind Your Calculation

The systems that run child maintenance, where your HMRC data comes from, and what the technology explains about the errors parents keep reporting.

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How It Works12 min read

What DWP Told the Lords About the CMS, and What They Left Out

Senior DWP officials gave evidence on the Child Maintenance Service in March 2025. Where their account and the department's own figures do not match.

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How It Works9 min read

Regulation 50: Who Pays When You Share Care Equally?

When care is genuinely 50/50, one parent still pays. The rule that decides which one is not what most parents expect, and nights are counted strictly.

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How It Works14 min read

Parent Moved Abroad? The CMS Usually Loses All Power

The CMS cannot touch a parent living overseas, with a handful of exceptions. The REMO route, which countries enforce UK orders, and what to do if yours does not.

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How It Works7 min read

How Much the CMS Makes From Collect and Pay Fees

Both parents are charged to use Collect and Pay. We used DWP's own statistics to work out what that raised in the year to March 2026, and who really carries the cost.

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How It Works5 min readreceiving parent

How Long Does Collect and Pay Take? 2 to 6 Weeks

Allow 2 to 6 weeks after your calculation before money moves, or 6 to 8 if an order goes to an employer. Plus what the fees cost each parent.

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How It Works7 min read

Private Arrangement or CMS? An Honest Comparison

A family arrangement is free and flexible. The CMS costs money but has legal teeth. Which one suits your situation, and when to switch.

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How It Works5 min read

When Does Child Maintenance Stop? Age 16, or 20 in Education

Payments end at 16, or up to 20 if your child stays in approved education. What counts as approved, what does not, and what ends it sooner.

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How It Works6 min readreceiving parent

How to Apply to the CMS: What You Need Before You Start

Applying is free since 2024. The details that speed your claim up, and the missing information that adds weeks of delay before anyone calculates a figure.

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How It Works5 min read

The CSA No Longer Exists. This Is What Replaced It

The Child Support Agency closed years ago, but millions still search for it. What it was, why it failed, and what the CMS does differently.

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How It Works6 min read

What Is the CMS? The Child Maintenance Service Explained

The CMS works out and collects child maintenance when parents cannot agree. What it does, what it charges, and whether you need it at all.

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