Child Maintenance Calculator
Find Out How Much You Should Pay or Receive
Quick & Easy CSA Calculation – Get Your Result in Minutes
Whether you’re newly separated or in the process of divorce, understanding your child maintenance obligations is essential. This tool provides a quick calculation to help you discuss payments with the other parent or plan your finances.
Accurate CSA Calculation Based on UK Guidelines
Instant Results – No Registration Required
Understand What You Might Pay or Receive

Get Your Free Child Maintenance
Estimate Now
Simply answer a few quick questions, and we’ll calculate your estimated child maintenance amount in minutes.
Before you start
You’ll need the following details for the parent who’ll be making the payments:
their annual income
the number of nights your child stays with them
how many other children they support
Confused About Child Maintenance?
Get Your Free Guide & Discover How Much You Should Pay or Receive
Our expert guide walks you through how child maintenance works, how much you should expect to pay or receive, and how to handle disputes—without unnecessary stress.
What’s Inside?
How to Calculate Child Maintenance – Step-by-step breakdown of the UK’s child support rules
The 3 Ways to Arrange Child Maintenance – What’s best for your situation?
How the CMS Works – Understand how the system calculates payments
Reducing Your Payments Legally – Expenses & special considerations that can lower your obligation
Avoiding Common Mistakes – How to prevent costly errors when agreeing on child support
How to Negotiate with Your Ex – Get a fair deal while keeping things amicable
Why Get This Guide?
Quick & Easy – No confusing legal jargon, just straightforward advice
Helps You Save Money – Learn about deductions & avoid overpaying
Perfect for Separated Parents – Whether you’re paying or receiving, this guide helps you get clarity