Calculator resting on financial documents and invoices, representing debt recovery and a letter before action

If a customer or client owes you money and has stopped responding to your reminders, there is one document that almost always comes before court: a letter before action. Sometimes called a letter before claim or letter of claim, it is the formal, final demand that tells the debtor exactly what they owe, gives them a deadline to pay, and makes clear that court proceedings will follow if they do not.

Getting this letter right matters. A well-drafted letter before action recovers a great many debts on its own — without anyone ever setting foot in a courtroom — because it shows the debtor you are serious and organised. Get it wrong, and you can weaken your position, delay payment, or even be penalised on costs later. This guide explains what a letter before action is, what it must contain, the deadlines that apply in England and Wales, and what to do if it is ignored.

What is a letter before action?

A letter before action is a written notice that formally demands payment of a debt before you issue a claim at the County Court. It is the last step in the pre-court process and puts the debtor on notice that, unless they pay (or reach an agreement with you) by a stated date, you intend to start legal proceedings to recover the money.

It is not just a courtesy. Under the civil justice rules in England and Wales, the courts expect parties to try to resolve a dispute before litigating. A letter before action is how you show you did exactly that.

Is a letter before action legally required?

Strictly, you are not forced to send one — but you should always do so. The courts operate under pre-action protocols and a general Practice Direction on Pre-Action Conduct and Protocols. These require you to give the other side a fair chance to respond before you sue. If you skip this step and race to court, a judge can penalise you on costs — even if you win — or stay (pause) your claim until the protocol is followed.

In short: sending a proper letter before action is both the fastest route to payment and the safest way to protect your position if the matter does end up in court.

What a letter before action must include

A strong letter before action leaves the debtor in no doubt about what is owed and what happens next. It should set out:

Element Why it matters
Your details and the debtor’s correct legal name Use the exact registered company name or the individual’s full name — getting the wrong legal entity can sink a later claim.
The amount owed The precise sum, with a breakdown (invoice numbers, dates and values).
What the debt relates to The contract, order or agreement the money is due under.
Interest and charges State any interest and compensation you are claiming and whether it is still building up (see below).
How to pay Clear payment details and an offer to discuss instalments if appropriate.
A deadline A clear date by which payment or a response is required.
The consequence A statement that you will start court proceedings without further notice if the deadline passes.

Keep the tone firm but professional. Threats, abusive language or inflated figures can backfire and undermine your credibility with a judge later.

How long must you give the debtor to respond?

The deadline depends on who the debtor is. This trips a lot of businesses up, so it is worth getting right:

Who you are chasing Which rules apply Time to respond
An individual or sole trader (business chasing a person) Pre-Action Protocol for Debt Claims 30 days
Another limited company or business (B2B debt) General Practice Direction on Pre-Action Conduct A reasonable period — commonly 14 days

If you are a business chasing an individual or sole trader, the Pre-Action Protocol for Debt Claims applies and is quite prescriptive. Your letter of claim must give the debtor 30 days to respond and must enclose an Information Sheet, a Reply Form and a Financial Statement form. Miss these requirements and your claim can be delayed or your costs reduced.

Claiming interest and compensation on a commercial debt

If the debt is between two businesses, you are usually entitled to claim more than just the invoice value. Under the Late Payment of Commercial Debts (Interest) Act 1998, you can add statutory interest of 8% above the Bank of England base rate, plus a fixed sum in compensation for each unpaid invoice:

Size of debt Fixed compensation you can claim
Up to £999.99 £40
£1,000 to £9,999.99 £70
£10,000 or more £100

You can also claim reasonable debt-recovery costs above that fixed sum. Spelling out the interest and compensation in your letter before action often concentrates the debtor’s mind — the longer they leave it, the more they owe.

What happens after you send it?

Once the letter before action lands, one of three things usually happens:

What to do if the letter is ignored

If your deadline passes, you have several enforcement routes in England and Wales, depending on the debtor and the size of the debt:

One important point on timing: under the Limitation Act 1980 you generally have six years from when the debt fell due to bring a claim. Leaving a debt to drift is rarely a good idea.

Common mistakes to avoid

How Din Solicitors can help

A letter before action carries far more weight on a solicitor’s letterhead. At Din Solicitors, our debt recovery team drafts robust, protocol-compliant letters before action, calculates the interest and compensation you are entitled to, and manages the whole process through to enforcement if needed — often recovering the debt long before court. We recently recovered £42,000 of unpaid invoices for a small business using exactly this approach.

For more practical guidance, read our companion articles on debt recovery for small businesses and recovering unpaid invoices.

If someone owes you money and is not responding, get in touch with our team for a no-obligation chat about your options.

Frequently asked questions

What is a letter before action?

A letter before action is a formal written demand for payment sent before you start court proceedings. It sets out the amount owed, gives the debtor a deadline to pay, and warns that a County Court claim will follow if they do not.

How long should I give someone to respond to a letter before action?

If you are a business chasing an individual or sole trader, the Pre-Action Protocol for Debt Claims requires you to allow 30 days. For a business-to-business debt, you should allow a reasonable period, which is commonly 14 days.

Is a letter before action legally required?

It is not strictly compulsory, but the courts expect you to follow the pre-action protocols and give the debtor a chance to respond. Skipping this step can lead to costs penalties or your claim being paused, even if you ultimately win.

Can I write my own letter before action?

Yes, you can. However, a letter drafted and sent by a solicitor tends to carry more weight, is more likely to be protocol-compliant, and often prompts payment more quickly.

What happens if the debtor ignores my letter before action?

If the deadline passes with no payment or meaningful response, you can issue a County Court claim, obtain a County Court Judgment and enforce it — or, for undisputed debts, serve a statutory demand as a route towards winding up a company or bankrupting an individual.

How much interest can I charge on a late commercial payment?

Under the Late Payment of Commercial Debts (Interest) Act 1998 you can charge statutory interest of 8% above the Bank of England base rate on a business-to-business debt, plus fixed compensation of £40, £70 or £100 depending on the size of the invoice, and reasonable recovery costs.


This article provides general information about debt recovery in England and Wales and is not legal advice. For advice on your specific situation, please contact Din Solicitors.

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