Form D50K asks the family court to enforce a financial order that hasn’t been paid, by whatever method the court considers appropriate. You don’t have to choose the method yourself. The court fee is £63. Your ex is ordered to complete a financial statement and come to court so the judge can decide how to recover the money.
- Official name
- Notice of application for enforcement by such method of enforcement as the court may consider appropriate (Family Procedure Rules 2010, rule 33.3(2)(b))
- Court fee
- £63
- Online or paper
- Paper
- Who fills it in
- The person owed money under the order
- When
- When payments or a lump sum ordered by the court have not been paid
- Current version
- D50K (04.23)
- Where it goes
- The court that made the order, or the court for the area where your ex lives or works
Correct at 20 October 2026. Fees from GOV.UK, Family court fees (EX50).
How do you fill in Form D50K?
D50K is for when you want the court to choose how to enforce. If you already know the method you want, such as an attachment of earnings order, the form says to use that method’s own application form instead.
The order being enforced
Name the court that made the order and its date, and copy what it says your ex must pay and by when.
Applicant and respondent details
Give your details and your ex’s, including an email address they actively use. The court will serve by email unless you ask for post, or say you’ll serve it yourself.
Questions 1 and 2: what is owed
For regular payments, give the amount and frequency, and the total arrears today. For a lump sum, give the date it was due and how much is unpaid.
Questions 3 to 5: court, interest and calculation
Confirm your ex lives or works in the court’s area, or that the order was made there. Add any interest due, and show how you’ve worked out the total, attaching your calculation.
Question 6 and statement of truth
Confirm, to your knowledge, no application has been made to vary the order. Then sign the statement of truth and pay the fee.
What are the common mistakes on Form D50K?
- Arrears figures you can’t show working for. Attach a payment schedule.
- Applying to the wrong court.
- Using D50K when you already know which method you want; the form tells you to use that method’s form instead.
- Not mentioning that your ex has applied to vary the order.
What happens after you send Form D50K?
The court issues an order telling your ex to send a completed Form E1 financial statement to the court and to you, and to attend a hearing to give information about their means. At the hearing the court can order enforcement by any of these methods: an attachment of earnings order, a third party debt order, a charging order (with a stop order or stop notice), a warrant of control, or appointing a receiver.
Where do you get Form D50K?
Download D50K from GOV.UK, where a Welsh version is also available. Send it to the court that made the order or the court covering where your ex lives or works.
We explain forms but never host them, so you always download the current version from GOV.UK.
When should you get help with Form D50K?
A family solicitor can advise whether enforcement is worth the cost, especially if your ex has few assets or may apply to vary the order in response. If the arrears are child maintenance arranged through the Child Maintenance Service, enforcement goes through the CMS, not this form.
Get help with Form D50K
Tell us what’s going on and we’ll introduce you to two or three family solicitors who can help. Introductions are free for you.
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Common questions
How much does it cost to enforce a financial order?
The fee for an application for enforcement by a method the court considers appropriate is £63. Help with Fees can reduce or cover it.
What can the court do if my ex will not pay?
It can order an attachment of earnings, a third party debt order, a charging order, a warrant of control or appoint a receiver, depending on your ex’s circumstances.
Do I have to choose the enforcement method?
No. D50K lets the court choose after hearing about your ex’s finances. If you already know the method you want, apply on that method’s own form instead.
Sources
- GOV.UK, Form D50K notice of application for enforcement (form version 04.23)
- GOV.UK, Family court fees (EX50), updated 13 July 2026
Related forms
Guides and tools
This page is general information about court forms, not legal or financial advice. Forms, fees and rules change, so always download the current form from GOV.UK and speak to a qualified professional about your situation. Facts checked 20 October 2026.