This guide is maintained as a current resource for September 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
Learn how child maintenance is calculated in the UK, including the factors that influence the amount a non-residential parent must pay. Understand the CMS, payment options, and enforcement procedures.
Child maintenance is a critical aspect of family law in the UK, ensuring that children receive financial support from both parents, even when they are not living together. It is the legal responsibility of the non-residential parent (the parent who does not live with the child) to provide financial support for their child's upbringing. Understanding how child maintenance is calculated and applied is essential for both parents involved in custody or child support arrangements.
This article explores how child maintenance is calculated in the UK, the various methods available for determining payments, and how these payments are applied in practice. The goal is to provide clarity on the process, so that parents and solicitors can better navigate child maintenance issues in line with current laws.
What Is Child Maintenance?
Child maintenance is the financial contribution made by the non-residential parent to help cover the costs of raising a child. This typically includes expenses for housing, food, education, and general care. Child maintenance can be calculated through a formal process, often using the services of the Child Maintenance Service (CMS), or through private agreements between parents.
In the UK, child maintenance is an ongoing obligation until the child turns 16, or 20 if the child remains in full-time education. The level of child maintenance a non-residential parent is required to pay depends on a variety of factors, including the income of the non-residential parent and the child's needs.
How Child Maintenance Is Calculated
The Child Maintenance Service (CMS) provides a framework for calculating child maintenance in a way that is fair and in line with the income of the non-residential parent. The calculation process varies depending on the specific service option selected by the parents. Below are the main ways child maintenance is calculated:
1. Direct Pay Service
In the Direct Pay option, parents agree on the amount of maintenance, and the payments are made directly between them. The CMS calculates the child maintenance amount but does not handle the collection or transfer of funds. This arrangement is only suitable when parents have an amicable relationship and can communicate effectively about payments.
The calculation is based on the income of the non-residential parent and the number of children involved. Typically, the CMS uses:
- Gross weekly income: The non-residential parent's total earnings before tax.
- Number of children: The CMS uses a sliding scale based on the number of children to determine the amount of child maintenance to be paid.
For example, if the non-residential parent has one child, the CMS may calculate the payment as a percentage of their weekly income. For two children, the percentage will increase.
2. Collect and Pay Service
The Collect and Pay option involves the CMS collecting payments from the non-residential parent and passing them on to the resident parent. This service is ideal if parents cannot agree on the amount of maintenance or if they are unable to make private arrangements. The CMS will calculate the amount of child maintenance based on the non-residential parent's income and the needs of the child.
In addition to the calculation, the CMS charges a fee for using the Collect and Pay service. This is typically paid by the non-residential parent, although in some cases, the resident parent may also be required to pay a fee.
3. Family-Based Arrangement
A Family-Based Arrangement is an informal approach where the CMS helps parents to agree on an amount for child maintenance, but does not oversee the actual payments. This option is most often used when parents are on good terms and can communicate directly about payments.
The CMS will provide a calculator and help parents work out a suitable amount, but it is up to the parents to manage the arrangement without formal involvement from the CMS. This option allows for flexibility but may not be enforceable if the non-residential parent fails to meet their obligations.
4. Court Orders for Child Maintenance
In cases where parents cannot reach an agreement and require a legal ruling, they can apply to the court for a Child Maintenance Order. Courts have the authority to decide the amount of maintenance a parent must pay, and can include specific provisions such as school fees or health-related expenses.
This option is often used when mediation or informal arrangements have broken down. A Consent Order may also be used to formalise an agreement made privately between the parents and give it the backing of the court.
The CMS Calculation: How It Works
When the CMS calculates child maintenance, it takes several key factors into account:
1. Gross Income
The CMS uses the non-residential parent's gross weekly income (before tax) to calculate how much they should pay. This can include:
- Salary and wages
- Bonuses and overtime
- Self-employed income
- Benefits such as pensions
For non-residential parents who are self-employed, the CMS considers their business income after deducting allowable business expenses.
2. Basic Child Maintenance Rates
Once the CMS has determined the non-residential parent's gross income, it applies one of three basic maintenance rates:
- Basic rate: For a non-residential parent earning between £200 and £3,000 per week.
- Flat rate: For a non-residential parent earning under £200 per week.
- Reduced rate: For parents who are not working or earning very little.
Each of these rates is a percentage of the parent's income. For example, a non-residential parent who earns between £200 and £3,000 per week may be required to pay:
- 12% of their gross income for one child
- 16% for two children
- 19% for three or more children
3. Adjustments for Shared Care
The CMS also adjusts payments based on how much time the child spends with the non-residential parent. This is known as shared care. If the non-residential parent spends a significant amount of time with the child (e.g., overnight stays), the CMS may reduce the amount of child maintenance they are required to pay.
For example, if the child stays with the non-residential parent between 52 and 103 nights a year, the CMS may reduce the child maintenance payments by one-sixth. For 104 or more nights, the reduction is one-third.
4. Deductions for Other Children
If the non-residential parent is supporting other children, the CMS may reduce the amount they need to pay for their other child(ren). This deduction is known as a reduction for other children.
Enforcing Child Maintenance Payments
When a non-residential parent fails to make their child maintenance payments, the CMS has several enforcement options. These include:
- Direct deductions from earnings: The CMS can instruct the non-residential parent's employer to deduct child maintenance directly from their salary.
- Bank account deductions: The CMS can take payments directly from the non-residential parent's bank account.
- Liability orders: If the non-residential parent fails to pay, the CMS can apply for a liability order, which can be enforced through the courts. This may lead to asset seizure, driving license suspension, or other enforcement measures.
- Court involvement: If the CMS's efforts are unsuccessful, the resident parent can apply to the court for enforcement, which may lead to further legal action.
Common Questions About Child Maintenance
How long does a parent have to pay child maintenance?
Child maintenance is generally required until the child turns 16, or 20 if the child remains in full-time education. If the child has special needs or other exceptional circumstances, maintenance may continue longer.
Can child maintenance be reduced?
Yes, child maintenance can be reduced if there are changes in the non-residential parent's income, the amount of time the child spends with them, or if there are other financial responsibilities (such as supporting other children).
Can parents negotiate child maintenance payments?
Yes, parents can negotiate child maintenance payments if both parties agree. If they cannot reach an agreement, they may apply to the CMS or the court for a decision.
The Bottom Line
Child maintenance is an essential legal obligation that helps ensure children receive financial support from both parents. The amount of maintenance is based on the non-residential parent's income and other factors such as shared care and additional children. The Child Maintenance Service (CMS) provides a clear framework for calculating payments, but parents can also negotiate private arrangements or seek court orders if necessary. By understanding how child maintenance is calculated and enforced, parents can ensure that the best interests of their child are served and that they meet their financial obligations.
