Child Maintenance Demand Letter Template & Generator

If you need to formally request payment of outstanding child maintenance, a written letter is the recommended first step — it creates a clear record and shows you're pursuing the matter formally. Below is what a strong child maintenance demand should include, plus a free tool to generate yours.

What this letter needs to cover

• Identify the children involved
• Set out the proposed maintenance amount and basis of calculation (Child Maintenance Service formula based on gross weekly income)
• Reference the Child Support Act 1991 obligation to maintain qualifying children
• Propose a Family Based Arrangement and request a written response
• Warn that a CMS application may follow

Your options for pursuing unpaid child maintenance

Whether your arrangement is through the Child Maintenance Service or a private agreement, unpaid maintenance can be pursued formally — but the correct route depends on which type of arrangement you have. A clear written demand is often a useful first step regardless, creating a record before further formal action if needed.

What to include before you send it

• The agreed maintenance amount and payment schedule
• The specific missed payments, with dates and amounts
• The total arrears owed
• A clear deadline for payment before further action is taken

What happens if payment still doesn't follow

If you have a Child Maintenance Service arrangement, they have their own enforcement powers, including deductions from earnings or benefits, and ultimately court action. For private arrangements, unpaid maintenance may need to be pursued through the small claims court, or you may choose to apply to the CMS instead going forward for stronger enforcement options.

Frequently Asked Questions

Can I ask the CMS to take over a private arrangement that's broken down?
Yes — you can apply to the CMS at any point if a private arrangement isn't working, and they'll assess and arrange collection going forward.

Do arrears stop accumulating if the paying parent claims they can't afford it?
No — arrears continue to accrue regardless, though the CMS or court can take financial circumstances into account when arranging repayment of arrears.

See our full letter template & generator library for related letters, or use our free checkers for guidance specific to your situation.