CMS Reviews and Appeals Do Not Automatically End Child-Maintenance Top-Up Orders

1. Introduction

This judgment resolves an important question about the relationship between administrative child-maintenance assessments and court-ordered additional maintenance. Once the Child Maintenance Service (“CMS”) has made a maintenance calculation, does every subsequent review, revision, supersession or appeal produce a fresh calculation capable of bringing an existing court “top-up” order to an end?

The Court of Appeal unanimously answered no. The statutory scheme ordinarily creates one continuing maintenance calculation. Later decisions update the amount payable under that calculation; they do not repeatedly replace it with a new calculation for the purpose of extinguishing an existing top-up order.

The issue arose in two appeals involving the same father and separate maintenance orders benefiting two children, A and N. Different judges had reached opposite conclusions about whether the mothers could enforce substantial arrears. The appellate decision establishes a common approach and prevents routine CMS administration from becoming an automatic mechanism for defeating otherwise valid court orders.

2. Background and Procedural History

The father had previously earned approximately £3 million annually as a professional footballer. Both children’s mothers obtained financial provision under Schedule 1 to the Children Act 1989, including consent orders for periodical payments:

• A’s mother: a September 2020 order provided for annual payments of £44,000.
• N’s mother: a May 2019 order provided for annual payments of £36,000, with Consumer Prices Index increases.

In September 2021, following retirement from professional football, the father informed the CMS that he was unemployed. In February 2022, the CMS superseded the existing calculation with a nil assessment effective from 24 September 2021. Both mothers challenged that decision.

A subsequent CMS investigation revised the nil assessment on the basis of misrepresentation. The father appealed, while the mothers also pursued their challenges. In March 2025, the First-tier Tribunal allowed the appeals before it and remitted the matter for recalculation. It found annual income of approximately £220,000 to £240,000 over the preceding four years. The CMS implemented the tribunal’s decision in June 2025, assessing the father’s gross weekly income as exceeding £3,000 throughout the relevant period.

The father nevertheless argued that the earlier CMS decisions had already brought the top-up orders to an end, regardless of the later correction. Each mother sought to enforce arrears of approximately £137,000.

Peel J transferred both appeals to the Court of Appeal under rule 30.13 of the Family Procedure Rules 2010. Lady Justice King delivered the substantive judgment, with which the other members of the court agreed.

3. The Statutory Framework

The CMS calculation and its continuing administration

Under sections 4 and 11 of the Child Support Act 1991 (“CSA 1991”), an eligible parent may apply for a maintenance calculation, and the Secretary of State determines whether maintenance is payable and, if so, its amount. The calculation uses the statutory formula in Schedule 1.

Paragraph 10(3) of Schedule 1 requires gross weekly income above £3,000 to be disregarded for the formula calculation. This is an income ceiling, not a universally fixed maintenance payment: the amount payable can still depend on the number of qualifying children, other relevant children and the applicable statutory adjustments.

The legislation also provides mechanisms for keeping the calculation accurate:

• Annual review: regulation 19 of the Child Support Maintenance Calculation Regulations 2012 provides for periodic updating of income information.
• Revision: section 16 permits correction of an earlier decision, including where it was wrong at its effective date.
• Supersession: section 17 permits a later decision to alter an earlier decision, including following changed circumstances.
• Appeal: section 20 provides access to the First-tier Tribunal, subject to the applicable prior revision procedure.

The court’s top-up jurisdiction

Section 8 generally prevents courts from exercising overlapping child-maintenance powers where the statutory scheme has jurisdiction. Section 8(6), however, permits additional court-ordered maintenance where:

1. a maintenance calculation is in force for the child;
2. the non-resident parent’s gross weekly income exceeds the statutory ceiling, currently £3,000; and
3. the court considers additional periodical payments appropriate in the circumstances.

The CMS supplies the formula-based provision; the court can address appropriate additional provision beyond the formula’s income ceiling.

When a CMS calculation displaces a court order

Section 10(1) and regulation 3 of the Child Support (Maintenance Arrangements and Jurisdiction) Regulations 1992 provide that making a maintenance calculation can cause an existing court order for periodical payments to cease to have effect to the prescribed extent.

The central issue was therefore not whether this displacement mechanism exists, but what counts as making a maintenance calculation. The father argued that each later CMS decision triggered it afresh. The mothers argued that subsequent decisions merely adjusted an existing, continuing calculation.

4. Summary of the Judgment

The Court of Appeal accepted the mothers’ interpretation. Its principal conclusions were:

1. There is one enduring maintenance calculation. Decisions on review, revision, supersession or appeal change the amount payable under it rather than create a fresh calculation for section 10 and regulation 3.
2. The statutory language distinguishes a calculation from later decisions. Treating every updating decision as a new calculation would collapse distinctions deliberately maintained throughout the Act.
3. The statutory termination provisions support continuity. Paragraph 16 of Schedule 1 identifies events bringing a calculation to an end; ordinary reviews and adjustments are not among them.
4. The competing interpretation would produce absurd consequences. It would expose top-up orders to repeated extinction through annual reviews and unrelated family changes, generating recurring litigation.
5. The court retains control over the appropriateness of its order. A paying parent whose circumstances change can seek appropriate judicial relief rather than rely on an administrative update automatically ending the order.

The court did not finally quantify or order payment of the claimed arrears. It resolved the legal obstacle to enforcement. Unless agreement could be reached, both cases were to return to the Designated Family Judge at the Central Family Court for directions and allocation.

5. Analysis of the Court’s Reasoning

A. A calculation is not the same thing as every decision affecting it

The judgment’s central distinction is between the continuing statutory maintenance calculation and the successive decisions determining its current financial consequences.

Section 11 determines the initial application by a decision. Sections 16 and 17 then provide for revision or supersession of decisions. Section 20 similarly distinguishes between a refusal to make a calculation and a refusal to supersede a decision. Read together, these provisions describe continuing administration of an existing calculation, not a succession of wholly new calculations.

Regulation 3 of the 2012 Regulations reinforced that distinction. It defines the broader expression “calculation decision” by separately identifying decisions under sections 11, 16 and 17. The father treated these categories as separate new calculations. The court instead regarded their separation as consistent with different decisions operating upon the same continuing calculation.

Likewise, regulations 73 and 74 describe the “effect” of variations on the maintenance calculation. That language supports adjustment rather than repeated replacement.

B. The calculation’s statutory lifespan supports continuity

Paragraph 16 of Schedule 1 identifies circumstances in which a calculation ceases to have effect, including death, the absence of any remaining qualifying child, and the relevant person ceasing to be a parent of the qualifying child or children. It does not identify an annual review, revision or supersession as a terminating event.

The court regarded this structure as “bookending” the calculation’s existence. Updating the payable figure operates within that lifespan; it does not itself end the calculation and start another one.

The father also relied on paragraph 15, which permits separate calculations for specified periods. The court explained that this provision addresses changes between the effective date and the decision date, as well as anticipated future changes, without requiring separate resort to the revision and supersession machinery. It did not establish that every later updating decision was a fresh calculation.

C. Changes unrelated to income expose the weakness of the father’s interpretation

The court demonstrated that supersession is not confined to changes in earnings. Three features of this family’s circumstances illustrated the point:

• The addition of another qualifying child required the available maintenance to be apportioned between carers.
• The father’s return to living with his other children entitled him to a “relevant other child” reduction.
• One older child’s loss of eligibility for child benefit later reduced that adjustment, modestly increasing maintenance for A and N.

On the father’s interpretation, these routine changes could extinguish top-up orders even though his income remained above the statutory ceiling.

The last example was particularly striking. A further top-up order obtained by A’s mother in June 2026 would, on the father’s argument, have ended only weeks later when the older child ceased to qualify for child benefit. An increase of about £6 weekly in CMS maintenance would have been accompanied by the loss of more than £25,000 annually in top-up payments. Nothing about that administrative adjustment logically justified eliminating the additional provision.

D. Regulation 3 retains a coherent function without catching routine updates

The court rejected the suggestion that its interpretation deprived regulation 3 of practical work. A genuine first maintenance calculation may follow a court order made when the CMS lacked jurisdiction—for example, because the paying parent was not habitually resident in the United Kingdom. A calculation may also follow an agreed maintenance order after the relevant one-year period.

In those situations, the later calculation can displace the earlier court provision under the statutory rules. By contrast, a section 8(6) top-up order necessarily follows an existing maintenance calculation.

This also explains the express protection in regulation 3 for school-fees orders and disability-related orders under sections 8(7) and 8(8): those orders can precede a CMS calculation. An equivalent express saving for top-up orders is unnecessary on the court’s interpretation.

E. Limited administrative discretion was not an answer

The father argued that the Secretary of State could avoid harmful consequences by declining to make a new decision where the child’s welfare required preservation of the top-up order. The court rejected this as an adequate account of the scheme.

Section 2 requires regard to affected children’s welfare when exercising discretionary powers. It does not replace the statutory formula with an open-ended welfare assessment. The father ultimately accepted that any relevant discretion was extremely limited and identified no example of its exercise.

Section 50A expressly permits computerised decision-making. The routine use of formula-driven calculations and exchanges of income information with HM Revenue and Customs reinforced the court’s conclusion that the scheme could not sensibly depend upon an unexercised protective discretion at every review.

F. Statutory purpose and the presumption against absurdity

The judgment traced the CSA 1991 to the policy of replacing inconsistent, slow and expensive court-based maintenance arrangements with predictable administrative assessment and effective collection.

The father’s construction would reverse that objective for families with top-up orders. Caring parents could have to fund fresh court applications after every annual review and potentially after intervening changes in the paying parent’s household. Routine administration would generate repeated litigation and financial uncertainty.

Importantly, the court treated statutory wording and structure as sufficient to reach its conclusion. Purpose and the presumption against absurdity supplied reinforcing, alternative support. It expressly recognised that courts cannot reject Parliament’s policy simply because judges consider another outcome more reasonable.

G. Court control, cessation and discharge

The judgment also distinguished an order being judicially “discharged” from its “ceasing to have effect” under the statutory displacement provisions.

Section 8(4) preserves the court’s power to revoke maintenance orders. Lady Justice King considered that control over discharge supported the conclusion that ordinary administrative updating should not terminate judicial orders. She also expressed constitutional concern about treating secondary legislation as conferring such a power on a computer-operated administrative process.

These observations should not be read as invalidating section 10 or regulation 3. The court accepted that a genuinely fresh maintenance calculation can have the prescribed statutory effect on an existing order. The distinction concerned the trigger and legal consequences, not the existence of the displacement regime.

As an alternative to its principal reasoning, the court considered that even if an updating decision caused an order to cease to have effect, this would not necessarily discharge it. Once section 8(6) applied, the court could exercise appropriate powers to suspend, enforce, vary or revive the order, subject to the statutory requirements. That alternative reasoning should not be confused with a finding that restoration or retrospective recovery would always occur automatically.

6. Precedents Cited and Their Influence

A. Child-maintenance and related authorities

Dickson v Rennie [2014] EWHC 4306 (Fam), [2015] 2 FLR 978

This authority establishes that the Secretary of State, rather than the Family Court, must determine that the paying parent’s gross weekly income exceeds £3,000 for the section 8(6) gateway. The present judgment preserves that allocation of responsibility. Its recognition of an enduring calculation does not authorise the court to bypass the CMS income determination when establishing top-up jurisdiction.

R v Secretary of State for Social Security, ex parte Biggin [1995] 1 FLR 851

Thorpe J’s observations about section 2 supported the limited role of welfare discretion within the formula-based scheme. In particular, section 2 does not influence quantification of statutory liability. This undermined the father’s argument that discretionary intervention could reliably prevent reviews from destroying top-up orders.

Wood v Secretary of State for Work and Pensions [2003] EWCA Civ 53

The father relied on this welfare-benefits case by analogy. Its binding conclusion concerned the need for a relevant finding of changed circumstances before supersession. Whether supersession “altered” or “replaced” an earlier decision generated differing observations, with Dyson LJ regarding the distinction as making no practical difference and the views as obiter. The case therefore did not establish the father’s proposed rule for child-maintenance calculations.

TW v TM (Minors) (Child Maintenance: Jurisdiction and Departure from Formula) [2015] EWHC 2054 (Fam), [2016] 2 FLR 1386

The court declined to rely on Mostyn J’s observations. That case concerned variation of a section 8(5) consent order, not a section 8(6) top-up order. No CMS calculation was in force, and the relevant comments were made without argument on the present issue. They could not resolve the statutory question now fully contested.

H v I [2024] EWHC 3512 (Fam)

Williams J had tentatively suggested that annual reviews were not fresh maintenance calculations for these purposes. Although that view pointed towards the eventual result, it was expressly provisional and reached without full evidence and submissions. The Court of Appeal treated it as an observation rather than a settled precedent. The present decision supplies the authoritative appellate determination previously missing.

B. Statutory-interpretation authorities

R (PACCAR Inc) v Competition Appeal Tribunal [2023] UKSC 28

This was a principal source of interpretive guidance. Lord Sales explained that statutory meaning depends on context and purpose and that courts ordinarily avoid absurd results unless the enacted words require them. Equally important was the warning against substituting judicial preferences for Parliament’s choices. The Court of Appeal applied both parts of that approach.

Rossendale Borough Council v Hurstwood Properties (A) Ltd [2021] UKSC 16; [2022] AC 690

Cited through R (PACCAR Inc) v Competition Appeal Tribunal, this authority reinforced the central importance of identifying legislative purpose. Here, administrative consistency and reduced dependence on repeated court proceedings formed the relevant statutory background.

R v McCool [2018] UKSC 23, [2018] 1 WLR 2431

Also appearing within the discussion in R (PACCAR Inc) v Competition Appeal Tribunal, this case supported the presumption against absurdity. The judgment applied that principle to consequences that were impracticable, anomalous and productive of disproportionate counter-mischief—not merely inconvenient to one party.

Deposit Protection Board v Dalia [1994] 2 AC 367

This authority appeared in the quoted explanation that roughly contemporaneous subordinate legislation may assist interpretation of its parent Act. Its relevance was methodological: the statutory scheme and its implementing regulations could be considered together. It did not decide anything about child-maintenance jurisdiction.

Darwall v Dartmoor National Park Authority [2025] UKSC 20

The joint judgment of Lord Sales and Lord Stephens restated the need to ascertain statutory meaning through text, context and purpose. The Court of Appeal used this approach to read sections 4, 11, 16, 17 and 20 as an integrated scheme rather than isolate particular references to decisions.

R (N3) v Secretary of State for the Home Department [2025] UKSC 6; [2025] 2 WLR 386

Referenced within Darwall v Dartmoor National Park Authority, this decision supplied further support for the same contextual method. Its contribution was interpretive rather than substantive: it did not concern the CMS or top-up orders.

Black-Clawson International Ltd v Papierwerke Waldhof-Aschaffenburg AG [1975] AC 591

The quoted proposition emphasised that courts seek the meaning of the words Parliament used. This anchored the court’s reasoning in enacted language and helped explain why the decision was not simply an appeal to fairness.

R v Secretary of State for the Environment, Transport and the Regions, Ex p Spath Holme Ltd [2001] 2 AC 349

Lord Nicholls’s formulation—that statutory interpretation identifies the meaning of words in their particular context—was central to the quoted interpretive framework. Applied here, the expression “maintenance calculation” acquired its meaning from the wider scheme, not merely from the everyday fact that a computer recalculates a payment.

CG Fry & Son Ltd v Secretary of State for Housing, Communities and Local Government [2025] UKSC 35

This decision reinforced that ordinary meaning and purposive interpretation are not competing exercises. The Court of Appeal therefore approached the wording, structure and objectives of the CSA 1991 together.

R (Project for the Registration of Children as British Citizens) v Secretary of State for the Home Department [2022] UKSC 3; [2023] AC 255

Lord Hodge’s explanation of the importance of a provision’s immediate and wider statutory context supported the judgment’s whole-Act analysis. The separate language governing initial calculations, later decisions and termination was more informative than any isolated use of “calculation”.

Together, these authorities supported the interpretive method. None had previously determined the precise interaction between routine CMS updates and existing section 8(6) top-up orders.

7. Impact and Limits of the Decision

Greater stability for children and caring parents

The decision removes the risk that an otherwise valid top-up order disappears merely because the CMS performs its normal functions. It reduces recurring applications, enforcement disputes and opportunities for administrative changes to create a financial advantage unrelated to the child’s needs or the paying parent’s actual means.

A clearer division of responsibility

The CMS continues to administer formula-based maintenance and make the relevant income determination. The court retains responsibility for discretionary additional provision and for appropriate applications concerning its orders. The judgment preserves, rather than dismantles, the statutory boundary between those functions.

Changed circumstances still matter

The decision does not make top-up orders immune from alteration. A paying parent whose circumstances change may seek suspension, variation or discharge as appropriate. The section 8(6) requirements remain important, including the court’s continuing assessment of whether additional maintenance is appropriate.

Nor does the judgment eliminate the operation of section 10 and regulation 3 when a genuinely fresh calculation is made. Its rule concerns ordinary updating and appellate processes affecting an existing calculation.

Enforcement remains a separate exercise

Establishing that an order survived does not itself determine the exact arrears, credits, indexation or any properly available issues concerning enforcement. Those matters remained for agreement or further proceedings.

The father had also relied on the earlier, unappealed refusal of enforcement in N’s case. The Court of Appeal resolved the appeals through statutory interpretation rather than a detailed examination of procedural finality. The judgment should not therefore be treated as establishing a general exception to rules governing the reopening of earlier decisions.

The below-ceiling situation was not comprehensively decided

The corrected CMS position showed income above the statutory ceiling throughout. The case consequently does not provide a complete answer to every question arising where income genuinely falls below that ceiling. Its clear holding is that an administrative updating decision is not, merely by its nature, a fresh calculation extinguishing the order.

8. Complex Concepts Simplified

Maintenance calculation

The continuing statutory assessment under which CMS maintenance is payable. Updating the amount does not necessarily create a new assessment for jurisdictional purposes.

Top-up order

A court order for appropriate additional maintenance where the statutory income ceiling has been exceeded and the section 8(6) conditions are met.

Revision

Correction of an earlier decision, generally because it was wrong when it took effect.

Supersession

A later decision changing the operative position, commonly because circumstances have changed. It does not, for the issue decided here, create a fresh maintenance calculation.

Variation

Within the CMS scheme, a statutory mechanism for taking specified additional matters into account, such as qualifying unearned income, assets or diverted income. This is distinct from a court varying its own order.

Ratio and obiter

The ratio is the legal reasoning necessary to decide a case. Obiter observations are comments not necessary to the outcome and do not carry the same precedential force.

Presumption against absurdity

An interpretive principle favouring a workable reading over an anomalous or impracticable one, unless Parliament’s words require the latter.

Ceasing to have effect and discharge

The judgment distinguishes statutory loss of an order’s operative effect from its judicial termination. That distinction informed the court’s alternative reasoning about possible restoration and enforcement.

9. Conclusion

The judgment establishes that routine CMS reviews, revisions, supersessions and appellate corrections do not create fresh maintenance calculations that automatically extinguish existing top-up orders.

Its significance lies in combining close statutory analysis with practical coherence. Administrative maintenance can be updated without repeatedly destroying complementary judicial provision. Genuine changes in circumstances remain matters for the appropriate statutory and court processes, rather than automatic opportunities to escape an existing order.