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Child maintenance explained by family lawyer

Child Maintenance means regular financial support paid by one parent to the other to contribute to a child’s everyday living costs and is payable for children who are either under 16 or under 20 and in full-time education (but not higher than A-Level or equivalent).

04 April 2018

What are the Options?

Family Based Agreement

You can arrange child maintenance directly with the other parent if you are able to agree the amount and frequently of the payment. This is called a family based agreement. For further guidance on making a family based agreement and a sample form you can visit the Child Maintenance Options website at A private agreement is not however legally binding and therefore the agreement cannot be enforced if one party stops making payments or changes the amount.

Child Maintenance Service

If you are not able to agree the level of child maintenance or you want a formal assessment to be undertaken to determine the correct level of maintenance an application can be made by either parent to the Child Maintenance Service (CMS). The CMS can also arrange collection of payments.

Consent Order

If parents are divorcing or going through the dissolution of a civil partnership they can agree for their agreement in relation to child maintenance to be recorded in their court order setting out all the terms of their finances. This is called a consent order. If parents record their agreement in a consent order they are prohibited from applying to the Child Maintenance Service for a period of one year from the date of their consent order.

Court Order

There are some situations where the CMS will not be able to assist. In these situations the court retains the ability to look at what level of regular financial support is appropriate.

The CMS will not be able to assist in the following situations:

  • When a paying parent lives abroad the CMS can only help if the paying parent is: a civil servant, working in Her Majesty’s Diplomatic Service, a member of the Armed Forces, working for a company that is based and registered in the UK or working on secondment for a ‘prescribed body’, like a regional health authority or local authority
  • If the receiving parent or the child lives outside the UK
  • Where the paying parents gross weekly income is more than £3,000 gross per week (£156,000 gross per annum being the maximum gross income that the CMS can take into account)
  • Where there is court order about maintenance made prior to March 2003
  • Determining the payment of school fees
  • Where a child has special needs
  • Where a child is beyond secondary education, but still in need of financial help (such as at university)

Using the Child Maintenance Service

The parent who doesn’t have day-to-day care of a child (the ‘paying parent') will pay child maintenance to the parent or person who does (the ‘receiving parent’). Where care is shared exactly there is no child maintenance liability.

There are four rates of child maintenance. They are used with the paying parent’s income to work out a weekly amount of child maintenance.

Nil Rate

This means the parent the child doesn’t live with doesn’t have to pay child maintenance because they:

  • are a student
  • are a child aged 16 or under (or 20 or under if they’re in full-time education not higher than A-level)
  • are a prisoner
  • get an allowance for work-based training or skill seekers training (in Scotland)
  • live in a care home or independent hospital and get help with the fees
  • are 16 to 17 years old and they or their partner get certain benefits

Flat Rate

This is £5 per week no matter how many children are involved. It’s used if the paying parent’s weekly income is between £5 and £100 and they don’t qualify for the nil rate.

It’s also used if they get certain benefits, including (but not limited to):

  • Armed Forces Compensation Scheme payments
  • Bereavement Allowance
  • Incapacity Benefit
  • Income Support
  • Employment and Support Allowance
  • Jobseeker’s Allowance
  • Pension Credit
  • State Pension
  • Training Allowance
  • War Disablement Pension

If the paying parent lives with a partner, the flat rate will be used if the partner gets:

Income Support

  • income-based Jobseeker’s Allowance
  • income-related Employment and Support Allowance
  • Pension Credit

Reduced Rate

This is used if the paying parent’s weekly income is between £100.01 and £199.99. They pay the flat rate of £5 plus a percentage of their net weekly income.

Basic Rate

This is a percentage of the paying parent’s gross weekly income. It is used if they have a gross weekly income of £200 or more. The percentage to apply depends on whether the paying parent’s gross weekly income falls between £200 to £800 or between £800.01 to £3,000. There is also an income cap of £3,000 per week (£156,00 per annum). Any income above this level will be ignored. Pension contributions may be deducted from the gross income figure before the percentages are applied.

The amount of child maintenance payable will also be affected by:

  • the number of children needing child maintenance
  • the number of other children the paying parent or their partner get Child Benefit for (‘relevant other children’)
  • the number of overnight stays with the paying parent

Gross Weekly Income Up to £800

One child: 12%

Two Children: 16%

Three or more children: 19%

Gross Weekly Income between £800 to £3,000

One child: 9%

Two Children: 12%

Three or more children: 15%

Percentage Reduction for Relevant Other Children

One relevant child: 11%

Two relevant children: 14%

Three or more children: 16%

Where the paying parent pays child maintenance in accordance with an assessment by the CMS the process of apportionment will take place whereby the overall liability is simply apportioned per child. For example a gross income of £40,000 and four children will result in an overall liability of £7,600 (£40,000 x 19%). This is then apportioned per child, with each child receiving ¼ of the liability.

Where the paying parent pays child maintenance for other children under a prescribed maintenance arrangement, pursuant to a family based arrangement (FBA) or a court order (as outlined above) the amount of maintenance is adjusted to acknowledge the paying parents financial responsibility to other children. A child supported in this way will be notionally treated as a qualifying child for the purpose of the maintenance calculation. A paying parent will therefore be treated as if they were liable for two qualifying children. The liability will then be notionally apportioned between the children. The paying party will pay the sum to the real qualifying children but the sum due to the FBA or court order child as per the apportionment will not be paid. Instead the paying parent will simply pay to the FBA or court order child the amount specified in the FBA or court order.

For example if a paying parent has a gross income of £40,000 per annum, one FBA child requiring a payment of £1,000 per annum and one qualifying child then the calculation will produce a liability of £6,400 (£40,000 x 16%). The qualifying child after apportionment will receive half, £3,200 and the FBA child will continue to receive £1,000.

For a FBA to be recognised by the CMS it must simply provide for the paying parent to make regular payments to a child of theirs who lives in the UK. This can even cover an oral agreement but the CMS will require some evidence of the arrangement. The form of this evidence is not specified but is likely to include bank statements showing the regular payment.

Shared Care

Where the paying parent has overnight contact a reduction to their child maintenance will apply to reflect the shared care. The discount to be applied will be determined by the number of nights the paying parent is expected to have with the child over a 12 month period, beginning with the start date of the child maintenance liability. In the absence of agreement or court order, the CMS will look to see what the pattern has been for the previous 12 months

Where the principle of future shared care is agreed but there is an issue as to how many nights the child will spend with the paying parent the CMS is entitled to make an assumption where there is insufficient evidence of an established pattern of care to make a decision. The assumption is that the child will spend one night a week with the paying parent . The assumption will continue until one of the parents applies for a supersession of the decision and provides sufficient evidence to enable the CMS to determine the number of nights.

  • fewer than 52 nights – no reduction;
  • between 52 and 103 nights – 14.29%;
  • between 104 and 155 nights – 28.57%;
  • between 156 and 174 nights – 42.86%, and
  • more than 175 nights – 50% plus £7 each week for each child.

6 Steps to Calculate the Amount of Child Maintenance

Step 1 - Work Out Income

The CMS will be able to find out the paying parent’s yearly gross income from information supplied by HM Revenue & Customs (HMRC) and check if they’re getting benefits (student grants and loans don’t count as income). Unearned income such as dividend, investment and property income, even if this is the paying patents principal source of income is excluded.

Gross income includes any bonus, commission or overtime payments. It also includes receipts from any pension scheme, tax credits, employment credits and disabled person’s tax credits. Gross income excludes investment income, State Benefits, student grants and loans.

CMS will use current income data supplied by the parents if either parent can show that current income differs from historical income data held by HMRC by 25%.

Step 2 – Apply Deductions

Deduct pension payments and then convert the yearly gross income figure in to a weekly figure.

Step 3 – Apply the Child Maintenance Rates

Step 4 – Other Children

Apply the percentage deduction for any relevant other children the paying parent has to pay child maintenance for, including other children living with them and any arrangements that have been made directly with an ex-partner.

Step 5 – Shared Care

Apply the percentage deduction for overnight stays with the paying parent.

Worked Example

Doug’s salary is £40,000 per annum and he pays £300 per month into his company pension. He has two daughters Chloe and Emma with his former wife, Anne. Chloe and Emma live with Anne and have contact with Doug one night each week. Doug lives with his new partner, Monica. Monica has twin sons, Chris and Casper, who live with her and Doug. What is Doug’s maintenance liability for Chloe and Emma?

  • Doug’s gross income after deduction of his pension is £ 36,400. His gross weekly income is therefore £700,00
  • Doug’s gross weekly income is under £800 so the applicable rate is 16%. 16% of 700.00 is 112. 00
  • Doug’s income is then reduced by 14% because there are two “relevant” children – Chris and Casper. His liability is reduced to £96.32 (14% of 112 is 15.68. 112 – 15.68 = 96.32)
  • Doug’s maintenance liability is then reduced by 14.29% because Chloe and Emma stay with him for more than 52 nights a year (14.29% of 96.32 is 13.76. 96.32 – 13.76 = 82.55)

The CMS round up payments to the nearest pound, so Doug must pay Anne £83.00 each week for Chloe and Emma’s benefit.


Either the receiving or paying parent can ask the CMS to take into account additional information or circumstances. This is called a variation application. A variation application is appropriate where the standard formula does not to do justice to the case. A variation application may be made by telephoning the CMS or writing to them.

The categories of variation application that might reduce maintenance liability are if:

  • the paying parent pays significant costs in maintaining contact with the child;
  • the paying parent must meet costs relating to the long-term illness or disability of a child living with him or her;
  • the paying parent must pay debts incurred for the joint benefit of both parents and / or the child (but some debts, like credit cards and overdrafts, are excluded);
  • the paying parent is paying the child’s boarding school fees, and
  • the paying parent is paying the mortgage on the property where the child lives.

The categories of variation application that might increase maintenance liability are if:

  • the receiving parent applies for a variation on the basis that the paying parent’s unearned income should be taken into account. The onus is on the receiving parent to make the application.

There is an appeal system within the CMS if either parent believes the maintenance liability calculation is wrong, or a variation application has not been dealt with properly.


For further information on a CMS assessment and to use a calculator online visit Child Maintenance or call the National Helpline on 0845 713 3133

Review family arrangements at the Child Maintenance Options Service.

To speak to a Family Lawyer at Slater and Gordon call freephone 0330 041 5869 or contact us online and we'll be happy to help.

All information was correct at the time of publication.

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