How CMS Cases Actually Move Through the Service
GOV.UK publishes the functions and processes CMS performs, but it does not publish a definitive public organisation chart using all the exact team names in the guide below. For accuracy, treat labels such as “Intake Team”, “Financial Assessment Team”, “Safeguarding Team” and “Complex Case Team” as functional case areas, not guaranteed formal internal department names.
Application & Eligibility
CMS checks whether the child and applicant are eligible, collects information about the parents and child, and can seek information from employers, government organisations, prisons, councils, banks or building societies where necessary.
How to apply EligibilityCalculation & Financial Assessment
CMS normally follows a six-step calculation. It gets yearly gross income from HMRC, checks benefits and other factors, applies the statutory rate, accounts for children supported and then applies shared-care reductions where appropriate.
Official calculation processPayments: Direct Pay or Collect & Pay
CMS uses two main payment methods. With Direct Pay, the Paying Parent pays the Receiving Parent directly. With Collect & Pay, CMS collects and transfers the money and charges statutory fees.
Current fees remain 20% added for Paying Parents and 4% deducted from Receiving Parents.
Payments & feesMissed Payments Are Handled Differently on Direct Pay
If a case is still on Direct Pay, CMS cannot take enforcement action while it remains there. A Receiving Parent can ask to move to Collect & Pay. Once on Collect & Pay, CMS can pursue missed or late payments.
Unpaid child maintenanceEnforcement Functions
Where maintenance remains unpaid, CMS can use deductions from earnings, pensions, benefits or bank accounts and can seek a court-granted liability order. A liability order can lead to enforcement-agent action and further court-based enforcement.
Current DWP statistics to March 2026 still describe liability orders as granted by the courts.
Enforcement options 2026 enforcement statisticsChanges of Circumstances
Either parent can report certain changes. Current guidance includes a change in main carer, shared-care arrangements, address, bank/contact details, adding a child and changes to payment method. Relevant Paying Parent changes include a 25% or greater income change or no income.
Report a changeDecision Challenge: Mandatory Reconsideration
If the legal payment decision itself is wrong, the formal route is normally Mandatory Reconsideration within 30 days of the date on the decision letter, followed by a tribunal appeal within one month of the MR decision where the decision is appealable.
CMS complaints & appealsComplaints Are Separate From Appeals
A service complaint covers matters such as delay, communication, poor handling or lost evidence. It does not replace Mandatory Reconsideration where the actual maintenance decision is disputed.
DWP complaints procedureDomestic Abuse, Location & Personal Safety
CMS says applicants should tell it if it is unsafe for the other parent to know their changed name or location. CMS does not share an applicant's address with the other parent. Collect & Pay can also operate without direct contact between parents.
Safety when applying Safe payment arrangementsComplex Income Is Usually a Calculation / Variation Issue
Self-employment, dividends, rental income, assets and alleged diversion of income are dealt with through the calculation and statutory variation framework. Current thresholds include rental income or interest/dividends over £2,500 a year and certain assets worth at least £31,250.
Variation rulesThe Official Decision Makers' Guide Shows the Functional Areas
The current DWP Child Maintenance Decision Makers' Guide is organised into volumes covering basic principles, maintenance calculations, variations, information gathering, reviews and appeals, collection and enforcement, and evidence and decision making.
This is a better official reference for “where an issue sits” than assuming a particular internal team name.
Current CMDMGInternational Maintenance Often Uses a Different Route
If a parent lives abroad, ordinary CMS jurisdiction may not apply. Depending on where the other parent lives, enforcement can instead involve the Reciprocal Enforcement of Maintenance Orders (REMO) system and the Maintenance Enforcement Business Centre.
International child maintenanceA More Accurate CMS Case Flow
A case can move backwards and forwards between these functions rather than following a single fixed departmental path.
What to Ask CMS Instead of Guessing the Department
These questions are usually more useful than asking for a specific internal team name.
Important: “Highest Priority Cases” Is Not a Published CMS Ranking
Your original page lists safeguarding, enforcement, high-value complex income and tribunal cases as the highest-priority cases. That can be a useful practical way of thinking about seriousness, but DWP does not publish a universal public ranking that puts every CMS case into that exact priority order. The page therefore keeps your list below but does not present it as an official CMS prioritisation policy.
Important: A Case Can Have More Than One Issue at the Same Time
For example, one case can simultaneously have an annual calculation, an unpaid-payment problem, a variation application, a safeguarding concern and a complaint. The correct legal route should be protected for each issue. A complaint does not stop an appeal deadline, and a change-of-circumstances report does not automatically correct historic payment allocation or arrears.
Official CMS Process Sources
CMS Case Areas and Departments
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(CMS) – Case Areas and Departments
1. Application & Intake Team
Reason:
This is where a new case starts.
Handles:
- New child maintenance applications
- Parent details
- Checking eligibility
- Opening the case
Example:
A parent applies because the other parent is not paying support.
2. Calculation & Financial Assessment Team
Reason:
CMS must calculate how much should be paid.
Handles:
- Income checks
- HMRC income information
- Shared care calculations
- Number of children involved
- Payment amount decisions
Example:
If the paying parent earns more, maintenance is higher.
3. Payment & Collection Team
Reason:
This team manages actual payments.
Handles:
- Direct Pay arrangements
- Collect and Pay service
- Missed payments
- Payment tracking
Example:
Checking whether the paying parent has paid on time.
4. Enforcement Team
Reason:
Used when payments are missed or avoided.
Handles:
- Deduction from earnings
- Bank account deductions
- Court action
- Liability orders
- Bailiff action
- Passport/driving licence actions
Example:
A paying parent refuses to pay despite repeated requests.
5. Change of Circumstances Team
Reason:
Life changes affect maintenance.
Handles:
- New job
- Job loss
- New children
- Change of address
- Shared care changes
- Income increase or decrease
Example:
The paying parent loses their job.
6. Complaints & Appeals Team
Reason:
Parents may disagree with decisions.
Handles:
- Mandatory reconsideration
- Formal complaints
- Tribunal preparation
- Dispute resolution
Example:
A parent believes income was calculated incorrectly.
7. Vulnerable Customer / Safeguarding Team
Reason:
Some cases involve risk or protection issues.
Handles:
- Domestic abuse concerns
- Safety risks
- Confidential addresses
- Special handling cases
Example:
One parent should not know the other parent’s location.
8. Legal & Complex Case Team
Reason:
Some cases are high-value or legally difficult.
Handles:
- Self-employed complex income
- Hidden income
- Company directors
- International maintenance
- Court-linked cases
Example:
A business owner hides income through dividends.
Simple Flow of a CMS Case
- Application → Calculation → Payment → Enforcement (if needed)
OR
- Application → Review → Complaint → Appeal
Why Cases Move Departments
Because the problem changes:
- New case → Intake
- Income check → Financial Team
- Payment issue → Collection Team
- No payment → Enforcement
- Dispute → Complaints
- Risk issue → Safeguarding
- Complex finances → Legal Team
Highest Priority Cases
Usually:
- 1. Safeguarding cases
- 2. Enforcement cases
- 3. High-value complex income cases
- 4. Tribunal/appeal cases
Because they involve risk, money recovery, or legal action.
If you're dealing with the UK Child Maintenance Service (CMS), it's helpful to understand how cases are handled and how to communicate clearly. Below is a guide.
How a CMS case is handled
Stage 1 – Application
CMS collects information about:
- Both parents
- The child or children
- Living arrangements
- Contact details
You can say:
"I would like to apply for child maintenance."
"I need an update on my case."
"Can you explain the next steps?"
Stage 2 – Income Assessment
CMS usually obtains the paying parent's income from HM Revenue and Customs (HMRC).
If you believe the income used is incorrect, you could say:
"I don't believe the income used reflects the paying parent's current circumstances."
"Could you review the income information?"
"Has the latest HMRC information been used?"
Stage 3 – Payment Arrangements
CMS decides whether payments will be made through:
- Direct Pay (parents arrange payments themselves)
- Collect and Pay (CMS collects and transfers payments)
You can ask:
"Which payment service is my case using?"
"When is the next payment due?"
"Can you explain how payments are calculated?"
Stage 4 – If Payments Are Missed
If payments stop, CMS may consider enforcement.
You can say:
"Payments have not been received."
"Could you tell me what enforcement action is available?"
"Has my case been referred for enforcement?"
Stage 5 – Changes in Circumstances
Tell CMS promptly if there is:
- A change of income
- A change of employment
- A change in care arrangements
- A change of address
You can say:
"I'd like to report a change in circumstances."
"My income has changed."
"The child now lives with me more often."
Stage 6 – Disagreements
If you disagree with a decision:
You can say:
"I'd like to request a Mandatory Reconsideration."
"Could you explain how this decision was reached?"
"I'd like a written explanation of the calculation."
Departments your case may go to
Department - Why your case goes there
New Applications - Opening a new case
Financial Assessment - Calculating maintenance
Payments - Managing payments
Enforcement - Recovering unpaid maintenance
Change of Circumstances - Updating income or family changes
Complaints - Reviewing concerns about the service
Appeals - Challenging decisions
Safeguarding - Cases involving domestic abuse or safety concerns
Complex Cases - Company directors, self-employed income, or overseas issues
Useful questions to ask CMS
"Who is currently handling my case?"
"What stage is my case at?"
"Has any enforcement action started?"
"Has my case been transferred to another team?"
"Is there any information you still need from me?"
"When should I expect the next update?"
"Can you send your decision to me in writing?"
"What are my options if I disagree with this decision?"
Information to have ready before you call
- Your CMS reference number
- Your National Insurance number (if requested)
- Your name and address
- Details of any recent payments
- Any letters or emails from CMS
- Details of any changes in circumstances
Tips when speaking to CMS
- Stay calm and polite.
- Stick to the facts.
- Write down the name of the adviser, the date and time of the call, and what was agreed.
- Ask for confirmation in writing if an important decision is made.
- If you do not understand something, ask the adviser to explain it in plain language.
If your case involves complex income, self-employment, company ownership, or enforcement, the questions and evidence you should provide can be different. If that's your situation, I can produce a more detailed guide tailored to those types of CMS cases.
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