When an ex-partner stops paying child maintenance, the effect is rarely limited to a missing bank payment. Many receiving parents have structured their household budgets around that regular contribution. When it suddenly disappears or is reduced without warning, it can immediately affect food, housing, school expenses, clothing, childcare and other everyday needs.

The first reaction is often a mixture of shock, frustration and financial panic. You may feel angry, powerless or tempted to retaliate by stopping contact with the children. Although those feelings are understandable, reacting emotionally can complicate the situation and rarely results in the missing maintenance being paid.

You do have options. The correct enforcement route will depend on whether your maintenance was based on a private arrangement, a Child Maintenance Service assessment or a court order.

This article primarily explains the system operating in England, Wales and Scotland. Different procedures apply in Northern Ireland, and specialist advice may also be needed if either parent lives outside the UK. If your matter has an international element, read our guidance on whether you can use a family lawyer qualified abroad in your UK case.

What Should I Do When a Child Maintenance Payment Is Missed?

Your first step should be to establish exactly what has happened. Check your bank statements, payment records and correspondence to determine whether the payment is late, has stopped completely or has been reduced.

Do not rely on memory alone. Record the date and amount of every payment received, together with each missed or reduced payment. Save relevant bank statements, screenshots, emails and messages. If formal enforcement becomes necessary, clear records can help show what was agreed, what was paid and when the problem began.

If it is safe and appropriate, send a calm written message asking for an explanation. Occasionally, a payment may have been delayed because of an administrative error, temporary financial difficulty or a change of employment. Written communication gives the other parent an opportunity to explain while also creating a record of the discussion.

However, you should not allow informal discussions to continue indefinitely while arrears grow. If the matter is not resolved promptly, contact the Child Maintenance Service or obtain advice from a qualified family law solicitor.

Can My Ex Simply Decide to Pay Less Maintenance?

A paying parent should not simply choose a lower amount because they believe it is fair, disagree with how the money is spent or have decided to prioritise other financial commitments.

There may be legitimate reasons for changing the amount. For example, the paying parent’s income may have changed substantially, the child’s living arrangements may be different or the number of children for whom the parent is responsible may have changed. That does not mean the paying parent should unilaterally replace an official calculation with a figure of their own choosing.

Where the CMS is managing the case, relevant changes should be reported so that the calculation can be reviewed. Current government guidance states that either parent can report certain changes, including a missed Direct Pay payment or a change of 25% or more in the paying parent’s income. Changes should be reported as soon as possible through the appropriate process.

If your arrangement is private, you may attempt to agree a reasonable temporary change. Any change should be recorded clearly in writing. If you cannot agree or you doubt the explanation being given, you may need to apply to the CMS for a formal calculation.

Can I Stop Contact If My Ex Does Not Pay Child Maintenance?

Child maintenance and contact with a child are separate legal issues. A parent generally should not stop contact simply because maintenance has not been paid. Equally, a parent cannot usually justify withholding maintenance because they are unhappy about contact.

Using contact as leverage can increase conflict and may create a separate child arrangements dispute. Maintenance should be addressed through the CMS or the appropriate court process, while disagreements about where a child lives or how much time the child spends with each parent should be handled separately. If a child arrangements order is already in place, our guide explains whether you can change your child arrangements after a court order.

If there are genuine safeguarding or domestic abuse concerns, those concerns require urgent and specific advice. That is very different from withholding contact solely because a payment has been missed.

Is a Private Child Maintenance Agreement Enforceable?

A private or family-based arrangement is an agreement made directly between parents. It may state that one parent will pay a fixed monthly amount, contribute a percentage of their income or pay specific expenses such as school uniforms, childcare or extracurricular activities.

Private arrangements can work extremely well when both parents communicate and cooperate. They are flexible and can be adapted as a child’s needs change. However, a purely private arrangement is not automatically enforceable in the same way as a CMS assessment or court order.

This is one of the most common misunderstandings I encounter. Parents often assume that because an amount was discussed, written down and paid regularly, the CMS or a court can immediately enforce it when payments stop. In reality, if a voluntary arrangement breaks down, the receiving parent may need to apply to the CMS for an official assessment or obtain legal advice about another appropriate route.

What Can the Child Maintenance Service Do?

In most routine cases in Great Britain, the Child Maintenance Service is responsible for calculating statutory child maintenance. The service currently provides Direct Pay and Collect and Pay arrangements.

Under Direct Pay, the CMS calculates the amount due, but the parents transfer the money between themselves. If the paying parent fails to pay in full or on time, the receiving parent should report the missed payment and ask the CMS to take appropriate action.

The CMS may move the case to Collect and Pay. Under this arrangement, the CMS collects the money from the paying parent and passes it to the receiving parent. It can also take enforcement action to recover unpaid statutory maintenance.

The distinction is important. Under a private arrangement, the parents decide the amount themselves. Under Direct Pay, the CMS calculates the amount but does not routinely handle the transfer. Under Collect and Pay, the CMS manages collection and can use its statutory enforcement powers when necessary.

What Enforcement Powers Does the CMS Have?

In my view, the most effective measures are those that recover maintenance directly rather than relying on repeated promises to pay.

Where the paying parent is employed, the CMS can arrange deductions from their earnings. The employer is instructed to deduct the required amount from wages and transfer it to the CMS. Because the money is removed before the parent receives their salary, this is often one of the most reliable ways to secure regular payments.

The CMS may also make deductions from certain benefits, pensions, bank accounts or building society accounts. Depending on the circumstances, deductions may be made regularly or as a lump sum.

If these measures are unsuccessful or unsuitable, the CMS can pursue further enforcement. This may involve obtaining a liability order and using enforcement agents, registering the debt, taking action against property or assets, or seeking stronger sanctions.

In serious cases involving persistent refusal to pay, possible measures include disqualification from driving, losing the right to hold a passport or imprisonment. These are not usually the starting point and are generally considered after other recovery methods have been tried.

Will the CMS Recover Child Maintenance Arrears?

Missed statutory maintenance does not necessarily disappear. Once arrears have been properly established, the CMS can seek to recover them alongside ongoing maintenance.

The method used will depend on the amount owed, the paying parent’s circumstances and the enforcement action available. In some cases, arrears may be recovered through a lump-sum deduction. In others, the paying parent may be required to repay the debt gradually in addition to continuing their regular maintenance payments.

This is why prompt reporting matters. Delaying action can allow the debt to grow, make records more difficult to reconstruct and leave the receiving parent under increasing financial pressure.

If your case uses Direct Pay, inform the CMS as soon as a payment is missed. Do not assume that the service will automatically know that money was not transferred directly between the parents.

How Long Does Child Maintenance Enforcement Take?

Parents should be prepared for the fact that enforcement is not always immediate. The CMS may need to confirm that maintenance is legally due, establish the arrears, contact the paying parent and follow the required procedure before stronger action can be taken.

Straightforward cases may progress more quickly, particularly where the paying parent is employed and their earnings can be identified. More complicated cases may take considerably longer.

Delays are more likely where the paying parent is self-employed, frequently changes employment, disputes the income information being used, lives abroad or appears to be deliberately avoiding payment. Enforcement may therefore take weeks or, in more complex cases, several months.

Keeping accurate records and responding promptly to requests from the CMS will not remove every delay, but it can prevent avoidable problems on your side of the case.

Are There Fees for Using Collect and Pay?

Under the current Collect and Pay system, collection charges apply to both parents. The paying parent is charged an additional 20% on top of the maintenance amount, while 4% is deducted from the amount passed to the receiving parent. Direct Pay does not carry these collection charges.

Although it can be frustrating for a receiving parent to lose part of the payment through collection charges, Collect and Pay may provide a more dependable route where direct payments have repeatedly failed. The priority is often to establish consistent future support while recovering the arrears.

The government has announced reforms affecting the structure of CMS payment arrangements, so parents should check the latest position when applying or changing services.

Can I Enforce a Child Maintenance Court Order?

A child maintenance provision contained in an enforceable court order is different from an informal agreement. If the order is breached, enforcement may be available through the court, subject to the type of order, when it was made and the applicable procedure.

Most routine child maintenance cases fall within the CMS statutory scheme. However, courts retain jurisdiction in certain circumstances, including some cases involving additional educational costs, disability-related expenses, high incomes or international issues.

A further complication is that you generally cannot apply to the CMS while a relevant consent order is less than one year old. Once that period has passed, either parent may be able to apply to the CMS, which can affect the ongoing effect of the maintenance provision.

If your maintenance appears in a divorce order, consent order or other court document, obtain legal advice before starting enforcement or applying to the CMS. The wording and date of the order can materially affect the correct next step.

A Realistic Example of a Private Arrangement Breaking Down

A mother had received regular child maintenance from her former partner for approximately three years. The payments were made under a private arrangement, and there had been very little conflict between them.

Without warning, the monthly payments dropped by almost half. The father said he had changed jobs, had additional financial commitments and believed the reduced amount was fair. However, he provided no evidence showing that his income had fallen enough to justify such a substantial reduction.

The mother was left struggling to cover the children’s everyday expenses. Instead of allowing the disagreement to become increasingly hostile, she gathered bank statements showing the previous and reduced payments. She also saved the messages and emails in which the father explained his decision.

Because their arrangement was private, the original amount could not simply be enforced as though it were a CMS assessment or court order. She therefore applied to the Child Maintenance Service for an official calculation.

During the assessment process, the father’s income was verified. Although he had changed employment, his earnings had not fallen enough to justify cutting the maintenance by half. The statutory calculation required him to pay an amount much closer to what he had previously been paying.

When he continued missing payments, the case was moved into a collection arrangement and formal recovery steps began. Faced with enforcement, he resumed regular maintenance and agreed to repay the outstanding amount over time.

The most important outcome was not punishment. It was the restoration of reliable financial support for the children. The official calculation also reduced the need for repeated arguments because the amount no longer depended on one parent’s personal view of what was fair.

What If My Ex Is Self-Employed or Hiding Income?

These cases can be more difficult, but they are not necessarily hopeless. The CMS generally uses income information supplied by HM Revenue and Customs when making its calculation. Complications can arise where income fluctuates, a parent receives money through a company, or their declared income appears inconsistent with their lifestyle.

If you believe the calculation has overlooked relevant income, obtain advice about requesting a variation or challenging the decision through the correct procedure. Avoid relying only on allegations. Gather lawful, relevant information and explain clearly why you believe the assessment may be inaccurate.

Do not attempt to access private accounts, devices or records unlawfully. A family solicitor can advise you on what evidence may be relevant and which procedure should be used.

What If My Ex Uses Money or Maintenance to Control Me?

Financial abuse and coercive behaviour can continue after a relationship ends. A former partner may use late payments, unpredictable reductions or repeated threats about money to maintain control.

If direct communication feels unsafe, you should not be pressured into negotiating privately. Tell the CMS about any relevant safety or domestic abuse concerns and seek specialist support or legal advice. If you or your child is in immediate danger, contact the police.

Keeping communication in writing can be helpful, but safety must come first. You do not need to expose yourself to abuse simply to ask for money intended for your child.

What Should I Do Today?

Begin by gathering your documents. Collect bank statements, payment records, emails, messages, your private agreement, CMS correspondence and any relevant court order.

Next, prepare a clear timeline. Record when payments began, what amount was usually paid, when payments stopped or changed and what explanation was provided. A concise chronology is often far more useful than a folder of unorganised messages.

If the issue has not been resolved informally, report the missed payment to the CMS or seek advice from a qualified family law solicitor. The correct route will depend on the legal basis of your arrangement, so establish whether you have a private agreement, a CMS calculation or an enforceable court order.

You Are Not Asking for a Favour

If you feel exhausted, intimidated or guilty about pursuing unpaid maintenance, remember that you are not asking your former partner for a personal favour. You are seeking financial support intended to help meet your child’s needs.

One of the biggest mistakes I see is waiting too long in the hope that the problem will resolve itself. Sometimes it does, but in many cases the arrears grow, evidence becomes harder to gather and the receiving parent is left trying to untangle months or years of missed payments.

The child maintenance system is intended to promote children’s financial welfare, not to punish either parent. The strongest outcome is one that restores dependable support, recovers appropriate arrears and reduces the need for ongoing conflict.

Act promptly, remain calm where possible, keep comprehensive records and use the correct legal process. Early advice often prevents a temporary payment problem from becoming a much larger financial and legal dispute.

This article provides general information only and is not a substitute for legal advice about your particular case.