Short answer
If a business owes you money on a commercial contract and has not paid after the due date, you are entitled to statutory interest at 8% above the Bank of England base rate and a fixed debt recovery cost — without needing to go to court first. If they still do not pay after a formal demand, you can issue a County Court claim or, for debts over £750, a statutory demand as a precursor to winding-up proceedings.
The Late Payment of Commercial Debts (Interest) Act 1998 applies automatically to business-to-business contracts for the supply of goods or services where the contract does not specify a different rate. It does not apply to consumer debts.
1 The rule
The Late Payment of Commercial Debts (Interest) Act 1998 implies a right to statutory interest and debt recovery costs into every qualifying business-to-business contract. The creditor does not need to sue to earn the interest — it accrues automatically from the day after the payment due date.
"It is an implied term in a contract to which this Act applies that any qualifying debt created by the contract carries simple interest… at the statutory rate."Read the official text
The statutory rate is currently 13.5% per year (8% above the Bank of England base rate of 5.5%). Fixed debt recovery costs are £40 for debts under £1,000, £70 for £1,000–£9,999, and £100 for debts of £10,000 or more. These costs do not require court proceedings — they are an automatic entitlement.
2 What you can do now
- Calculate the full amount owed
Add up: (a) the principal invoice amount; (b) statutory interest from the day after the payment due date (or day 31 after delivery/invoice, whichever applies); (c) the fixed debt recovery cost; and optionally (d) any contractual interest rate if higher than the statutory rate. Use LawTheGuide's interest calculator on the tools page to compute the current interest. Keep a running total — interest accrues daily until payment.
- Send a formal letter before action
Write to the debtor company stating: the contract and invoice details; the principal amount; the interest calculation (rate, period, daily amount); the fixed recovery cost; a demand for payment of the total within 14 days; and a warning that court proceedings will follow. Send by email and recorded post to the registered office address (check Companies House). The <a href="/guides/debt/letter-before-action" class="body-link">letter before action guide</a> covers the full drafting process.
- Chase the payment with escalating steps
If the letter produces no response, consider: (a) a telephone call to the credit controller or finance director; (b) a second written demand reducing the payment deadline to 7 days; (c) offering a payment plan if cashflow is the debtor's stated problem (this does not waive your interest rights). Document every contact — the court will consider whether you made reasonable efforts to resolve the dispute before issuing.
- Issue a County Court claim or statutory demand
For debts up to £100,000, issue via Money Claim Online at gov.uk/make-court-claim-for-money. For debts over £750 owed by a company that is clearly solvent but refusing to pay, a statutory demand under the Insolvency Act 1986 can be a powerful pressure tool — it gives the company 21 days to pay or dispute before you can petition for winding up. Statutory demands should only be used if the debt is genuinely undisputed; using them for a disputed debt is an abuse of process.
- Enforce a judgment if obtained
Once you have a County Court judgment, enforce it if unpaid after 30 days. Options: warrant of control (enforcement agents attending the debtor's premises), charging order over property the debtor owns, or third-party debt order freezing the debtor's bank account. For a limited company with assets, a charging order over its property is often the most effective route. The <a href="/guides/debt/county-court-money-claim" class="body-link">county court money claim guide</a> covers enforcement in detail.
3 When this does not apply
- The contract is with a consumer (individual), not another business — the Late Payment of Commercial Debts Act does not apply. Consumer debts are governed by the Consumer Credit Act 1974 and different rules apply.
- The debt is genuinely disputed — the debtor claims the goods or services were defective, or that no contract was formed. A disputed debt requires a full court hearing; statutory demands are not appropriate.
- The debt is more than six years old — it may be statute-barred under the Limitation Act 1980 and unenforceable through the courts.
- The debtor company is in administration or liquidation — you must file a proof of debt with the insolvency practitioner rather than pursuing through court.
4 Common questions
Can I charge interest even if my contract says nothing about it?
Yes. Under the <a href="https://www.legislation.gov.uk/ukpga/1998/20/contents" target="_blank" rel="noopener noreferrer">Late Payment of Commercial Debts (Interest) Act 1998</a>, statutory interest at 8% above the Bank of England base rate is implied into every qualifying business-to-business contract, whether or not the contract mentions interest. You cannot contract out of this right in a standard commercial contract — any clause that attempts to exclude it is void unless the contract provides a "substantial contractual remedy" for late payment instead. State your entitlement clearly in your invoices and letters before action.
What is a statutory demand and when should I use one?
A statutory demand is a formal written demand under the <a href="https://www.legislation.gov.uk/ukpga/1986/45/section/123" target="_blank" rel="noopener noreferrer">Insolvency Act 1986, s.123</a> (for companies) or s.268 (for individuals) for payment of a debt of £750 or more. If the debtor fails to pay or secure the debt within 21 days and cannot show the debt is disputed on substantial grounds, you can petition for their winding up (company) or bankruptcy (individual). A statutory demand is powerful but should only be used for clear, undisputed debts — courts view misuse of the process seriously and can award costs against a creditor who issues one for a genuinely disputed debt. The <a href="https://www.gov.uk/statutory-demands" target="_blank" rel="noopener noreferrer">GOV.UK guidance on statutory demands</a> explains the process.
The debtor company has gone into administration. Can I still recover the debt?
Once a company enters administration, a moratorium takes effect — you cannot issue or continue court proceedings, or enforce a judgment, without the administrator's or court's consent. You must file a proof of debt with the administrator stating the amount owed and attaching evidence. Whether you recover anything depends on the company's assets and the priority of creditors. Unsecured trade creditors rank behind secured creditors and preferential creditors (such as employees for unpaid wages). Contact the <a href="https://www.gov.uk/government/organisations/insolvency-service" target="_blank" rel="noopener noreferrer">Insolvency Service</a> to find the appointed administrator and file your proof of debt promptly.
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