Important DEO Rules & Protections
These additions use current GOV.UK, legislation.gov.uk and ICO material and are intended to sit alongside the full original guide below.
Protected Earnings
Employers must make sure a DEO leaves the employee with at least 60% of net earnings for the relevant pay period. This is the protected earnings proportion.
The employer must reduce the deduction where necessary so the statutory protection is not breached.
GOV.UK employer guidance Regulation 11Employer Administration Charge
GOV.UK says an employer can deduct an additional £1 administration cost from the employee’s pay each time a child maintenance deduction is made.
The guidance also says this £1 may still be taken even if it takes pay below protected earnings, but not if it would take pay below the National Minimum Wage.
See the official ruleWhat Counts as Earnings
Employers should use the CMS rules on what counts as earnings when operating a DEO. The GOV.UK employer guidance explains treatment of wages, salary, bonuses, overtime and other payments.
GOV.UK: what counts as earningsEmployer’s Legal Duties
A DEO is a legal instruction to the employer. The employer is generally responsible for calculating the deduction from actual net earnings, applying protected earnings, making the deduction, keeping the required records and sending the money to CMS.
The employer does not decide whether the underlying CMS maintenance calculation or arrears figure is legally correct.
CMS employer guide How employers send DEO paymentsChallenge a CMS Decision
If the dispute is about the amount of child maintenance, GOV.UK says a parent can request Mandatory Reconsideration, normally within 30 days of the date on the decision letter.
After the Mandatory Reconsideration decision, an appeal to the Social Security and Child Support Tribunal may be available.
CMS complaints & appeals SSCS2 appeal formIncorrect Personal Data
UK GDPR gives individuals the right to have inaccurate personal data corrected. The ICO says an organisation should consider a challenge to data accuracy and correct inaccurate information.
This is relevant to incorrect factual records, but a rectification request does not replace the statutory CMS reconsideration or appeal route against a maintenance decision.
ICO: correct your data ICO: accuracy principleDEO Payroll Check: What the Employee Can Verify
Where a deduction looks wrong, compare the employer’s payroll calculation with the DEO and the CMS account separately.
Disputed Arrears Do Not Automatically Stop a DEO
The original guide correctly distinguishes a fairness argument from the current legal position. If arrears are disputed, CMS may continue collection unless it changes or suspends the action. A parent should therefore submit the evidence and use the correct challenge route quickly rather than assuming the employer can stop the order.
Official Sources for Employees & Employers
Important Route Check
A DEO, the underlying maintenance calculation, disputed arrears and a payroll processing error are not necessarily the same decision. The correct remedy depends on what is actually wrong. Use CMS reconsideration/appeal routes for eligible maintenance decisions, the complaints route for service failures, the employer for payroll-processing errors, and data-protection rights for inaccurate personal data.
DEO Detailed Guide
The following retains the supplied material, including employee rights, employer support, disputed arrears, evidence, legal safeguards, data protection, complaint routes and the employee protection checklist.
This process is known as a Deduction from Earnings Order (DEO) and is one of the most commonly used enforcement tools available to CMS.
For many Paying Parents, a DEO can have a significant impact on household finances, budgeting, employment relationships, and personal wellbeing. It is therefore important to understand:
- When CMS can make deductions from wages
- How deductions work
- Employee rights
- Employer responsibilities
- Evidence standards
- Challenging incorrect deductions
- Protection against false arrears
- Accountability and oversight
This guide provides practical information and explains the legal safeguards that should apply when CMS exercises its powers.
What Is A Deduction From Earnings Order (DEO)?
A Deduction from Earnings Order allows CMS to instruct an employer to deduct child maintenance directly from an employee's wages.
The employer must normally comply with the order and send the deducted amount to CMS.
CMS then allocates the payment to the child maintenance account.
A DEO can be used to collect:
- Ongoing child maintenance
- Child maintenance arrears
- Ongoing maintenance and arrears together
Legal Framework
The power to make deductions from earnings comes from legislation including:
Child Support Act 1991
The primary legislation governing child maintenance and enforcement.
Child Maintenance and Other Payments Act 2008
Modernised the child maintenance system.
Child Support (Collection and Enforcement) Regulations
Sets out enforcement procedures and powers.
Human Rights Act 1998
Requires public authorities to act lawfully, proportionately, and fairly.
Data Protection Act 2018
Protects personal information and data accuracy.
UK GDPR
Provides rights concerning personal information and record correction.
When Can CMS Use A Deduction From Earnings Order?
CMS may consider a DEO where:
Child Maintenance Is Not Being Paid
Payments have been missed or remain outstanding.
Arrears Have Accumulated
CMS believes maintenance debt exists.
Collect & Pay Is Being Used
A case is operating under Collect & Pay arrangements.
Enforcement Action Is Considered Appropriate
CMS decides that direct wage deductions are necessary.
Can CMS Apply A DEO Without Going To Court?
In many cases, yes.
One of the significant powers available to CMS is the ability to issue a Deduction from Earnings Order administratively without first obtaining a court order.
However, this does not remove CMS's responsibility to act lawfully, accurately, and fairly.
How A DEO Works
Step 1 – CMS Issues The Order
CMS sends instructions to the employer.
Step 2 – Employer Processes The Deduction
The employer deducts money from wages.
Step 3 – Employer Transfers The Money
Payments are sent to CMS.
Step 4 – CMS Allocates Payments
CMS records and applies payments to the maintenance account.
Types Of Deduction From Earnings Orders
Regular Deduction From Earnings Order
Used for ongoing maintenance and routine collection.
Lump Sum Or Arrears Collection
May be used where arrears have accumulated.
Employee Rights
A DEO does not remove a person's legal rights.
Employees retain important protections.
Right To Accurate Records
CMS records should be accurate and capable of correction.
Right To Fair Treatment
Public authorities must act fairly and reasonably.
Right To Challenge Errors
Incorrect decisions may be challenged.
Right To Understand Decisions
Parents should be informed about:
- Why deductions are being made
- Amounts being deducted
- Maintenance periods involved
Right To Evidence-Based Decision Making
Deductions should be based on accurate maintenance records.
Employer Responsibilities
Employers who receive a DEO are generally required to:
Implement The Deduction
Process deductions as instructed.
Transfer Payments Correctly
Ensure payments are sent to CMS.
Maintain Records
Keep payroll records relating to deductions.
Protect Employee Information
Handle information appropriately.
Employer Administration Charges
Employers are permitted to retain a small administration amount from wages in accordance with applicable regulations.
Employees should review payslips carefully to understand deductions being made.
How Employers Can Help
The employer is not responsible for auditing CMS calculations, checking whether CMS used the correct gross income, or
deciding whether arrears are valid.
The employer's legal duty is generally to:
- Implement the Deduction from Earnings Order (DEO).
- Deduct the amount specified by CMS.
- Apply the protected earnings rules.
- Send deductions to CMS.
The employer does not normally have authority to override a CMS calculation simply because the employee says it is wrong.
Where An Employer Can Help
Although employers cannot usually cancel or reduce a DEO themselves, they can help identify problems.
1. Confirm Actual Earnings
An employer can provide evidence showing:
- Gross earnings.
- Net earnings.
- Bonuses.
- Overtime.
- Salary reductions.
- Sick pay.
- Reduced hours.
If CMS is using outdated or incorrect income information, payroll records may help prove this.
2. Identify Protected Earnings Problems
Employers must leave the employee with at least 60% of net earnings after deductions (known as protected earnings).
If the CMS deduction would breach this protection:
- The employer must not deduct more than allowed.
- The employer must report the shortfall to CMS.
- The unpaid amount is normally carried forward.
This is one of the most important protections available to employees.
3. Confirm CMS Is Taking More Than Ordered
Payroll can check:
- The DEO amount.
- Actual deductions.
- Arrears amounts being deducted.
Errors can occasionally occur in payroll processing.
4. Provide Evidence For A Challenge
Employers can provide:
- Payslips.
- Payroll reports.
- Employment contracts.
- Earnings histories.
These documents may be useful if a Paying Parent challenges:
- Income calculations.
- Arrears.
- Enforcement action.
- Affordability issues.
An Employer Can't Stop Arrears Deductions Because They Are Disputed
How Employers Can Help During A Dispute
Employee Rights – Employer Support During CMS Disputes
While employers are not required to challenge Child Maintenance Service (CMS) decisions on behalf of employees, some employers may choose to support staff by providing factual information or evidence where appropriate.
An employer may be able to help by providing for the employee with employees consent to an advocate service / local MP on
behalf of the employee / child maintenance service.
- Payroll records and payslips
- Evidence of pension contributions
- Confirmation of earnings and income changes
- Records of reduced hours, sickness, parental leave, or unpaid leave
- Employment start and end dates
- Evidence of salary sacrifice arrangements
- Historical income records, which may be useful where CMS income figures appear inaccurate or out of date
- Deduction history, showing exactly what has been deducted from wages under a Deduction from Earnings Order (DEO)
- Copies of payroll calculations and wage deductions
- Confirmation of net earnings and protected earnings calculations
Employees may also wish to provide their own evidence regarding:
- Shared care and overnight stays
- Relevant other children living in their household
- Changes in family circumstances
- Direct Pay payment records
- Disputed arrears or missing payments
- Previous CMS decisions and correspondence
Any support provided by an employer is voluntary and does not replace the employee's responsibility to challenge CMS decisions directly. However, employer records can sometimes provide valuable evidence where income figures, pension deductions, wage deductions, maintenance calculations, or alleged arrears are disputed.
What Should Happen If Arrears Are Disputed?
This is where many Paying Parents believe stronger safeguards should exist.
If arrears are disputed because:
- Payments were made but not credited.
- Direct Pay evidence exists.
- Shared care was calculated incorrectly.
- Income information was wrong.
- CMS ignored evidence.
Then the Paying Parent should immediately:
Request:
- Full arrears breakdown.
- Payment schedule.
- Maintenance account history.
- Allocation history.
- Evidence relied upon.
(A full acount statment)
Submit:
- Bank statements.
- Payment confirmations.
- Shared care evidence.
- Payroll evidence.
Challenge Through:
- Mandatory Reconsideration.
- Complaint process.
- Appeal routes where available.
- Independent Case Examiner (ICE).
What Many Paying Parents Argue
Many Paying Parents argue that:
"Where arrears are genuinely disputed and supporting evidence exists, only the undisputed ongoing maintenance should be
deducted until the arrears dispute is properly investigated."
This is often presented as a fairness and natural justice argument.
However, this is not currently an automatic legal requirement in CMS legislation.
CMS can continue collection activity while disputes are ongoing unless it decides otherwise. This is one reason why early challenges and strong evidence are so important.
Advanced Claimant Protection Position
A strong claimant-protection argument can be made that before enforcing disputed arrears CMS should ensure:
- The debt is accurately calculated.
- All evidence has been reviewed.
- Payments have been allocated correctly.
- Shared care records are correct.
- Income assessments are correct.
- Reasons for rejecting evidence are clearly explained.
These principles arise from:
- Natural Justice.
- Procedural Fairness.
- Human Rights Act 1998.
- Data Protection Act 2018.
- UK GDPR accuracy requirements.
- General principles of administrative law.
While these principles do not automatically stop a DEO, they can form part of a complaint, appeal, tribunal argument, or in serious cases a public law challenge.
Practical Advice
If a Paying Parent disputes arrears:
1. Ask payroll for earnings records and copies of deductions.
2. Obtain a full CMS account breakdown.
3. Compare every deduction against CMS records.
4. Gather all Direct Pay evidence.
5. Challenge inaccuracies immediately in writing.
6. Keep paying current maintenance where possible while the dispute is investigated.
This often places the parent in a stronger position when arguing that the arrears figure itself is wrong, rather than simply challenging the DEO.
Official Government Guidance
CMS Employer Guide
Make Child Maintenance Deductions From An Employee's Pay
What Counts As Earnings
CMS Earnings Guidance For Employers
Evidence Standards
Good administration requires decisions to be supported by evidence.
Relevant evidence may include:
- Payroll records
- Payslips
- Employment records
- Payment histories
- CMS account statements
- Correspondence
- Banking records
Evidence should be properly reviewed before significant enforcement action is taken.
False Arrears And Incorrect Deductions
One of the most common concerns raised by Paying Parents involves deductions based upon arrears they believe are incorrect.
Examples may include:
Payments Not Properly Recorded
Maintenance previously paid but not correctly credited.
Duplicate Debt Entries
The same amount appearing more than once.
Shared Care Errors
Incorrect care arrangements affecting calculations.
Income Assessment Errors
Maintenance based on inaccurate income figures.
Administrative Mistakes
Errors occurring during case management.
Advanced Claimant Protection
Parents should understand that CMS enforcement powers are not unlimited.
Legal safeguards exist.
Natural Justice
Parents should have opportunities to challenge incorrect information.
Procedural Fairness
Relevant evidence should be properly considered.
Rational Decision Making
Decisions should be evidence-based.
Proportionality
Enforcement action should be proportionate.
Accountability
Public bodies remain accountable for mistakes.
Protecting Yourself Against Incorrect Deductions
Good practice includes:
Keep Every Payslip
Retain copies indefinitely where possible.
Retain All CMS Correspondence
Store all notices and letters.
Save Payment Evidence
Keep bank statements and payment confirmations.
Maintain A Case File
Many parents find it useful to keep:
- CMS decisions
- Payment records
- Appeals
- Complaints
- Shared care evidence
in one organised file.
Review Arrears Statements Carefully
Do not assume arrears figures are automatically correct.
If You Believe A DEO Is Wrong
If you believe deductions are based upon incorrect information:
Request A Full Explanation
Ask CMS:
- How the arrears were calculated
- What evidence was used
- Which maintenance periods are involved
Request Account Statements
Obtain detailed payment records.
Submit Supporting Evidence
Provide:
- Payslips
- Bank statements
- Previous payment confirmations
- Shared care evidence
Request Mandatory Reconsideration
Seek a formal review where appropriate.
Appeal To An Independent Tribunal
Certain decisions may be appealable.
Submit A Formal Complaint
Where concerns involve maladministration or evidence handling.
Data Protection Rights
Individuals have rights concerning personal information held by CMS.
These rights may include:
Subject Access Requests (SARs)
Request copies of information held.
Record Corrections
Challenge inaccurate information.
Data Accuracy Complaints
Raise concerns regarding incorrect records.
Accountability And Oversight
CMS remains accountable to:
Independent Tribunals
For certain appealable decisions.
Independent Case Examiner (ICE)
For unresolved service complaints.
Parliamentary And Health Service Ombudsman
For complaints referred through an MP after complaint procedures are exhausted.
Information Commissioner's Office (ICO)
For data protection and information accuracy concerns.
Courts
Where legal challenges arise.
Useful Government Resources
Child Maintenance Service
https://www.gov.uk/child-maintenance-service
Deduction From Earnings Information
https://www.gov.uk/child-maintenance-service/payments
Child Maintenance Complaints
https://www.gov.uk/government/organisations/child-maintenance-group/about/complaints-procedure
Mandatory Reconsideration & Appeals
https://www.gov.uk/child-maintenance-service/disagreements-about-parentage-or-payments
Independent Case Examiner
https://www.gov.uk/government/organisations/independent-case-examiner
Information Commissioner's Office
https://ico.org.uk
Employee Protection Checklist
- Keep every payslip
- Retain all CMS letters
- Save payment confirmations
- Review deductions regularly
- Request explanations for arrears
- Maintain independent records
- Challenge errors immediately
- Submit evidence promptly
- Use Subject Access Requests where needed
- Never assume deductions are automatically correct
Key Message
Deduction from Earnings Orders are powerful enforcement tools that allow CMS to collect child maintenance directly from wages. While these powers exist to support compliance with child maintenance obligations, they must be exercised lawfully, proportionately, and based on accurate information.
For Paying Parents, maintaining comprehensive records, understanding how deductions are calculated, reviewing arrears carefully, and challenging inaccuracies promptly can provide important protection against incorrect deductions, disputed arrears, and avoidable financial hardship. Evidence, transparency, and accountability remain fundamental safeguards within the child maintenance system.
Right First Time UK
Fair Decisions. Public Money. Real Accountability.