2026/03/29

Private Pensions and Child Maintenance: How Pension Contributions Can Reduce CMS Calculations

If you pay child maintenance, it can be difficult to balance today’s responsibilities with planning for retirement. Even so, pension saving remains important. For many people, the State Pension alone will not be enough, and building up a workplace or private pension can make a real difference later in life.

The good news is that pension contributions can affect the way the Child Maintenance Service (CMS) calculates child maintenance. In many cases, qualifying pension contributions reduce the income figure used in the calculation, which can lower the amount payable.

This article explains how private pensions and workplace pensions are treated by CMS, what evidence you may need to provide, and when CMS may argue that contributions are excessive.

How pension contributions affect child maintenance

CMS usually works out child maintenance using the paying parent’s gross income from HMRC.

However, pension contributions can reduce the income figure used in that calculation.

A simple example:

If you earn £20,000 per year, CMS may initially assess maintenance using that full amount.

If you make £2,000 per year in qualifying pension contributions, the assessable income may reduce to £18,000, which can lower the child maintenance calculation.

This is an important point for parents who want to save for retirement without paying more child maintenance than the rules require.

Regulation 40 and pension deductions

The legal basis for this is found in Regulation 40 of the Child Support Maintenance Calculation Regulations 2012, which deals with pension contributions that are eligible for tax relief at source.

In practical terms, this means that where qualifying private pension contributions have not already been reflected in the HMRC income figure used by CMS, a deduction can be made when the correct evidence is provided.

Workplace pension or private pension: which is easier for CMS purposes?

From a child maintenance point of view, a workplace pension is often easier to manage.

That is because workplace pension deductions are sometimes already reflected in the taxable pay figure reported to HMRC. Where that has already happened, CMS may automatically use the lower income figure without needing any extra adjustment.

However, not all workplace pensions are handled the same way. In some cases, pension contributions are deducted after tax and National Insurance. Where that happens, CMS may still need to make a separate adjustment.

With a private pension, CMS will often see the full income figure first and only make the pension deduction once evidence has been provided.

So while both types of pension can help reduce the income figure used by CMS, a workplace pension is often more straightforward administratively.

What evidence does CMS need?

If you pay into a private pension directly, rather than through payroll, you should normally be ready to provide proof of your contributions.

The best evidence is usually:

your annual pension statement for the relevant tax year
confirmation of any tax relief added to the pension
where relevant, your HMRC tax calculation if you are claiming higher-rate relief

CMS guidance isthat the evidence should match the tax year being used in the child maintenance calculation. So if your CMS calculation is based on the 25/26 tax year income, only the 25/26 pension contributions reduce the payment. Not the money you are paying into a pension this year.

As a practical rule, keep all pension statements safely and make sure the figures you send to CMS clearly cover the correct tax year.

You cannot send the pension details before the annual review is complete. The computer cant see it. You send afterwards, and they recalculate.

Timing matters: annual reviews and tax years

CMS reviews cases each year using the latest complete tax year available from HMRC.

That means timing matters.

If you want private pension contributions to be taken into account, it is usually best to make sure your evidence clearly relates to the tax year CMS is using for the annual review.

Sending the right evidence for the wrong year can delay things and cause confusion.

Can CMS say pension contributions are excessive?

Yes, sometimes.

Although pension contributions can reduce the income figure used in the standard CMS calculation, CMS can still look more closely at them if there is an argument that the payments are unusually high and are being made to reduce child maintenance rather than genuinely provide for retirement.

Public CMS guidance says there is no fixed deduction cap in the main calculation, but excessive contributions can still become relevant in a variation or diversion of income argument.

The 12% starting point and age-related guidance

CMS guidance has historically used 12% of gross income as a starting point for deciding whether pension contributions appear reasonable.

Above that level, decision-makers may compare contributions with older Financial Services Authority guidance based on the age at which pension saving began.

The guide ranges often referred to are:

Age 30: 12% to 18%
Age 35: 16% to 22%
Age 40: 18% to 25%
Age 45: 25% to 30%
Age 50: 30% to 45%
Age 55: 45% to 70%

These percentages are best understood as guidance, not a hard legal limit.

That matters, because pension rules and individual circumstances vary widely. Someone may have started a pension years ago but contributed too little, taken breaks, or had poor investment growth. So it is not always fair to treat an old start date as a reason to restrict current pension saving, and this could be used to argue a tribunal decision if CMS dont allow the full amount.

Tax rules and CMS rules are not the same

This is a key point that many people miss.

For tax purposes, the standard annual pension allowance is currently £60,000 per year for most people.

But CMS does not automatically accept that any contribution within the tax allowance must also be reasonable for child maintenance purposes. They are able to do this because a previous case ruled against a paying parent and determined that a maximum level could be set.

So a contribution may be perfectly valid for pension tax relief, while still being challenged by CMS if it looks excessive in the context of maintenance.

Practical tips if you are paying into a pension

If you are paying child maintenance and want your pension contributions to be taken into account properly, these points can help:

Regular contributions are usually easier to explain than one-off lump sums made at the end of the tax year.

Keep your annual pension statements and any HMRC calculations.

Make sure the evidence you send matches the tax year CMS is using.

If you are a higher-rate taxpayer, keep proof of any additional tax relief claimed through HMRC.

If CMS argues that your contributions are excessive, ask for a clear written explanation and consider challenging the decision if the reasoning does not reflect your actual retirement needs.

Important disclaimer

This blog is about child maintenance rules and CMS practice. It is not financial advice or investment advice.

Before making any pension decision, you should do your own research and consider getting independent financial advice.

Frequently Asked Questions

Do pension contributions reduce child maintenance?

They can. CMS guidance says qualifying pension contributions can reduce the gross income figure used in the maintenance calculation.

Does a private pension count for CMS?

Yes. Private pension contributions can be taken into account, but CMS may ask for evidence such as an annual pension statement.

Is a workplace pension better than a private pension for child maintenance purposes?

Not always, but it is often easier administratively because workplace deductions may already be reflected in the income figure supplied to HMRC.

Can CMS refuse to accept pension contributions?

CMS can look closely at contributions if they appear excessive and may consider them as part of a variation or diversion of income argument.

What proof should I send to CMS?

Usually your annual pension statement for the relevant tax year, and where relevant, HMRC documents showing additional tax relief.

Further Information

Child Maintenance - Book available from Amazon.co.uk

Buy Now

Child Maintenance Regulations Concerning Pension Contributions

This video guide may help:

2026/03/25

Child Maintenance Liability Orders: Why “The Amount Is Wrong” Usually Fails in Court — and What to Say If Your CMS Appeal Is Ongoing

Child Maintenance Liability Order Hearings: Why “The Calculation Is Wrong” Usually Fails — and What to Say If Your Appeal Is Live

Introduction

If you are facing a child maintenance liability order hearing, it is easy to assume the court will listen to everything from the beginning and decide whether the Child Maintenance Service calculation was fair.

In most cases, that is not what this hearing is for.

Under section 33 of the Child Support Act 1991, the court’s role is usually much narrower. In a liability order hearing, the magistrates are generally concerned with whether the payments became payable and were not paid. The court is not normally there to recalculate the maintenance or decide whether the original calculation was too high. This article focuses on magistrates’ court liability order hearings in England and Wales. There may be differences in Scotland or Northern Ireland.

That point was made very clearly by the House of Lords in Farley v Child Support Agency / Secretary of State for Work and Pensions 2006 UKHL 31, which remains one of the key authorities in this area. Lord Nicholls explained that, on a section 33 application, the magistrates must proceed on the basis that the maintenance calculation was lawfully made, and their function is limited to checking that the assessment relates to the defendant and that the payments became payable and were not paid.

What the court is actually deciding

Section 33(3) says the court must make a liability order if it is satisfied that the payments in question became payable by the liable person and have not been paid. Section 33(4) then says the court must not question the maintenance calculation under which those payments fell to be made.

In plain English, that means this hearing is usually about enforcement, not about whether CMS got the number wrong in the first place. If your real complaint is that the calculation is wrong, the usual route is to challenge the decision through mandatory reconsideration and, if necessary, an appeal to the Social Security and Child Support Tribunal. GOV.UK says you normally ask for mandatory reconsideration within 30 days of the decision letter, and if you are still unhappy after that, you can appeal to the tribunal within one month of the reconsideration outcome.

Why admitting non-payment can effectively seal the liability order

This is the mistake many people make.

They go to court and say something like:

“Yes, I did not pay, but that is because the amount was too high.”

That often does not help. In fact, it can hand the court the two findings it needs: that the amount became payable and that it was not paid. Once that is established, section 33(4) usually prevents the magistrates from reopening the calculation itself at that hearing.

So, saying “I didn’t pay because it was too much” or "I didnt pay because ...."is usually not a defence to the liability order. It may explain why you did not pay, but it does not usually answer the legal question the court is being asked to decide.

Why the Farley case matters so much

Farley is the case that judges and CMS representatives often rely on because it draws a very firm line between:

challenging the calculation, and
enforcing unpaid maintenance.

The case was decided by the House of Lords before the Child Maintenance Service was created, on 28 June 2006. Lord Nicholls gave the leading judgment, and the other Law Lords agreed.

The important parts are these:

Paragraph 16

Lord Nicholls said that on a liability order application the magistrates must proceed on the basis that the maintenance assessment was lawfully and properly made, and that the court is precluded from questioning any aspect of the assessment. He then said the court’s function is to check that the assessment relates to the defendant and that the payments became payable and were not paid.

The court is the check and balance. Was a payment due, was it paid?

Paragraph 32

Lord Nicholls concluded that section 33(4) prevents the justices from investigating whether the maintenance assessment or calculation is a nullity, and that such a challenge must be pursued through the statutory appeal structure instead.

In other words, if it isnt being appealed, then the liability hearing is not the place where a hearing will be held.

Paragraph 33

This is the part many defendants overlook. Lord Nicholls added that where an appeal against the validity of the underlying calculation is already pending, magistrates should consider whether it would be oppressive to make a liability order at that stage. If it would be oppressive, they should adjourn the hearing pending the outcome of the appeal or for such shorter period and on such terms as may be just. He said magistrates have that power under section 54 of the Magistrates’ Courts Act 1980.

That is why Farley matters to both sides. It helps CMS argue that the court cannot recalculate the maintenance at the liability order hearing. But it also helps a defendant who already has a live statutory challenge, because paragraph 33 supports an argument for adjournment where immediate enforcement would be oppressive.

In other words, if it is being appealed, than a liability order hearing must be adjourned to allow the appeal to take place. This is the reason why its important to attend a liability hearing if its disputed and being appealed elsewhere.

The practical point defendants need to understand

The hearing is usually not the place to say:

“The amount is wrong, so I should not have to pay.”

The stronger and more realistic position is:

“I understand this court is not deciding the validity of the underlying calculation today. My point is that the calculation is already under statutory review or appeal, and the court should consider whether it would be oppressive to make a liability order before that challenge is decided.”

That is a much better use of Farley.

A sample defence where the calculation is disputed and under review or appeal

Here is a suggested text that a paying parent may want to provide the judge.

Suggested wording for court

“I dispute the underlying child maintenance calculation. I am not asking this court to recalculate child maintenance at this liability order hearing. I recognise that under section 33(4) of the Child Support Act 1991, and as explained in Farley v Child Support Agency / Secretary of State for Work and Pensions [2006] UKHL 31, the magistrates’ court does not question the underlying maintenance calculation in these proceedings.

My case is that the calculation is already under statutory challenge by mandatory reconsideration / revision / appeal. In light of paragraph 33 of Farley, I ask the court to consider whether it would be oppressive to make a liability order before that challenge has been determined. If so, I ask the court to adjourn the hearing pending the outcome of that challenge.

I also ask the court to consider whether the statutory preconditions for a liability order have been satisfied, including proper notice under regulation 27 of the Child Support (Collection and Enforcement) Regulations 1992 and whether any part of the sum claimed is outside the six-year limit in regulation 28(2).”

This establishes that you are not asking the court to recalculate, but you are relying upon an appeal, thus meaning that the hearing needs to be adjurned.

Proper notice still matters

Even though the court cannot usually revisit the calculation, the enforcement process still has rules.

Under regulation 27, the Secretary of State must give the liable person at least 7 days’ notice of the intention to apply for a liability order. If the liable person is not resident in the United Kingdom, the minimum notice is 28 days. The notice must also set out the amount of child support maintenance said to be outstanding.

So if notice was late, missing, sent to the wrong place, or did not properly set out the amount being claimed, that can still be an issue worth raising. The court is not there to reconsider the original calculation, but it is still entitled to ask whether the statutory route to enforcement has been followed.

What the six-year rule means in real terms

This is one of the most important practical points.

Regulation 28(2) says that an application for a liability order may not be instituted more than 6 years after the day on which payment of the amount in question became due. The wording focuses on the amount in question, and on the date the application was instituted, not simply the hearing date.

So what if some of the arrears are more than six years old?

On the face of regulation 28(2), if part of the claimed arrears became due more than six years before the liability order application was started, that older part should not be included in that application. In other words, an amount that is outside the six-year limit is a serious point to challenge.

Does that wipe out the whole case automatically?

Not necessarily.

The safer way to explain it is this: it may prevent CMS from relying on the out-of-time part of the arrears in that liability order application, but it does not automatically mean every other, more recent arrears item disappears as well. This could require the hearing to be adjourned whilst the CMS correct the demand. If some arrears are still within time, CMS may still argue that a liability order should be made for those in-time sums. That is an inference from the wording of regulation 28(2), which refers to the “amount in question.”

Why this matters in court

If CMS is claiming one global figure, you should think about whether you need a proper breakdown showing:

each missed payment,
when it fell due,
which sums are said to remain unpaid, and
whether any part of that figure is older than six years from the date the application was instituted.

If any part is out of time, a defendant may want to say something along these lines:

“I ask the court to require the applicant to identify precisely which arrears are said to fall within regulation 28(2). To the extent any part of the amount claimed became due more than six years before the application was instituted, I say that part cannot properly be included in this liability order application.”

That is usually a better argument than making a general complaint that the figure “looks wrong”.

Frequently asked questions

Can I defend a liability order by saying the child maintenance calculation is unfair?

Usually, no. Section 33(4) and Farley make clear that the magistrates’ court does not normally decide whether the underlying calculation was right or wrong at the liability order hearing. That dispute usually belongs in the statutory reconsideration or appeal process.

If I admit I did not pay, have I basically lost?

You may have made the applicant’s job much easier. Section 33(3) focuses on whether the payments became payable and were not paid. If you openly accept both points and only argue that the amount felt too high, that is usually not a defence to the liability order itself.

What should I do if I think the calculation is wrong?

You should normally challenge the decision through mandatory reconsideration and, if necessary, appeal to the Social Security and Child Support Tribunal. GOV.UK says mandatory reconsideration should usually be requested within 30 days of the decision letter, and a tribunal appeal is usually brought within one month of the reconsideration outcome.

Can Farley help me as a defendant?

Yes. It is often quoted against defendants, but paragraph 33 can help where you already have a live appeal or other statutory challenge underway. In that situation, Farley says the magistrates should consider whether making a liability order would be oppressive and, if so, adjourn.

What if the notice was defective?

Regulation 27 still matters. The Secretary of State must usually give at least 7 days’ notice, or 28 days if you are outside the UK, and the notice should state the amount claimed. If the enforcement process did not follow the rules, that is a point worth raising.

What if some of the debt is over six years old?

That is potentially important. Regulation 28(2) says the liability order application may not be instituted more than 6 years after the day the amount in question became due. That means older arrears can be vulnerable to challenge. But it does not necessarily wipe out the whole application if there are newer arrears still within time.q

Final takeaway

For most people, the single most important point is this:

A liability order hearing is usually not the place to argue that the child maintenance calculation was simply too high.

If you stand up in court and say, “Yes, I didn’t pay, because the amount was too much,” you may be confirming the very facts CMS needs. The stronger approach is to understand the narrow role of the hearing, identify any real enforcement defects, and, if the calculation is already under statutory challenge, consider relying on Farley paragraph 33 to ask for an adjournment where enforcement would be oppressive.

Closing disclaimer

This article is a general explanation of the law and procedure and is aimed at readers in England and Wales dealing with child maintenance liability order hearings. It is not tailored legal advice. Child maintenance cases can turn on the exact dates, notices, payment history, application paperwork, and whether a statutory challenge is already underway. If you are facing a hearing, get advice on your own papers from a solicitor, law centre, or specialist adviser as soon as possible.

#ChildMaintenance

#CMS
#ChildSupportAct1991
#LiabilityOrder
#FamilyLaw
#Farley
#MagistratesCourt
#ChildMaintenanceAppeal
#MandatoryReconsideration
#UKLaw

2026/03/05

Are you eligable to claim CMS

🔷 CHILD MAINTENANCE SERVICE

ARE YOU ELIGIBLE?

(UK CMS eligibility explained)

👶 CHILD’S AGE

✔ Under 16
✔ Under 20 if in approved education/training

🏠 YOU MUST

✔ Live in the UK as your main home
✔ Have the right to live in the UK

👨‍👩‍👧 WHO CAN APPLY

✔ Any parent with the majority of care for the child
✔ Grandparent with main day-to-day care
✔ Guardian
✔ Child over 12 living in Scotland

🚫 WHEN YOU DON’T HAVE TO PAY

If you have NO income and are:
✔ A full-time student
✔ In prison

➡ No need to apply

⚖ COURT ORDER

❌ You cannot apply if there is a
court-approved consent order less than 12 months old

🌍 PARENT WORKS OVERSEAS

Cannot apply if:
• Child & main carer live outside the UK

Usually cannot apply if:
• Paying parent works abroad

Possible exceptions if they work for:
• Civil Service
• His Majesty’s Diplomatic Service
• Armed Forces
• NHS
• UK Local Authority
• UK-registered company

💷 CMS EARNINGS LIMIT

£3,000 PER WEEK

CMS can only deal with earnings up to £3,000 per week.
Income above this may require a court “top-up” order.