Final demand letter template for unpaid invoices
Reviewed in October 2026
A final demand letter is the last written request for payment before a business takes formal steps. It states the amount owed, a deadline to pay and the step that follows if the deadline passes. It goes out after reminders have failed. Download the template in Word and fill in the brackets.
What it includes
- Your business details and the date
- Customer name and address
- A clear subject line with FINAL DEMAND
- The invoices, amounts and due dates
- Earlier reminders and their dates
- Total amount owed, with any interest or charges
- A deadline to pay, with the exact date
- How to pay
- The step you will take if the deadline passes
- An invitation to talk or dispute the amount
- Signature
Final demand letter: full text
[Business name]
[Address] · [Phone] · [Email]
[Date: 21 October 2026]
[Customer name]
[Customer address]
Account no.: [Account number]
FINAL DEMAND FOR PAYMENT
Dear [Customer name],
Our records show that the following invoices remain unpaid:
Invoice no. Invoice date Due date Amount
[1019] [10 June 2026] [10 July 2026] [5,900.00]
[1033] [1 August 2026] [31 August 2026] [4,700.00]
Total [10,600.00]
Reminders were sent on [dates of earlier reminders] and the balance has not been paid.
[If the agreement or the law allows interest or recovery costs, list them here with their basis. Leave this line out if neither applies.]
Please pay [currency and total amount] by [deadline date, at least 14 days from today] using the details below:
[Bank name, account name and number, reference]
[Payment link or other method]
If payment is not received by that date, [Business name] intends to [the specific step you will actually take, for example refer the matter to a solicitor, start a small claims case, or stop supplying on credit]. This may add costs to the amount owed.
If you dispute any part of this balance, or if you would like to agree a payment plan, contact [name] at [phone or email] before the deadline. A copy of each invoice is available on request.
If you have already paid, please send the payment reference and ignore this letter.
Yours sincerely,
_____________________________
[Name]
[Role]
For [Business name]What goes in each part
- Subject line. Write FINAL DEMAND FOR PAYMENT so the letter is not read as another reminder.
- Invoices. List each one with its due date. The customer must be able to check every figure.
- Earlier reminders. Give the dates. It shows the letter is the last step, not the first.
- Interest and charges. Add them only when the contract or the law allows them.
- Deadline. Give an exact date. Fourteen days is common for business customers.
- Next step. Name the one step you will really take. An empty threat weakens the letter.
- Way out. Offer a contact for disputes or a payment plan. It often settles the matter.
Rules to follow before you send it
A final demand letter must be accurate and must not threaten anything you cannot do. It must not look like a court document.
- United Kingdom, customer is an individual or sole trader. The Pre-Action Protocol for Debt Claims expects a Letter of Claim with an Information Sheet and Reply Form. The debtor has 30 days to reply before court proceedings.
- United Kingdom, customer is another business. GOV.UK says you can claim statutory interest of 8% plus the Bank of England base rate. A fixed recovery sum of £40, £70 or £100 applies depending on the debt.
- United States. The Fair Debt Collection Practices Act covers third-party debt collectors, 15 U.S.C. 1692a. A creditor collecting its own debt under its own name is mostly outside it.
- South Africa. The Debt Collectors Act 114 of 1998 requires anyone collecting debts for others to register with the Council for Debt Collectors.
Other countries have their own rules. Check them before you mention interest, costs or court.
Example with figures
A cleaning company in Manchester is owed £2,400 by another company on 30-day terms. The invoice is 45 days past due.
| Item | Amount | Basis |
|---|---|---|
| Invoice 2207 | £2,400.00 | Unpaid since due date |
| Statutory interest, 45 days | Rate × £2,400 × 45 ÷ 365 | 8% plus base rate, GOV.UK |
| Fixed recovery sum | £70.00 | Debt between £1,000 and £9,999.99 |
Use the base rate on the day you calculate. The letter states the total and a 14-day deadline.
When to send a final demand
- After at least two reminders with no payment and no reply.
- When a payment agreement has broken and the grace period has passed.
- Before you hand the account to a solicitor or an agency.
- When the invoice is in the over 90 days bucket of your aging report.
Common mistakes
- Threatening steps you will not take. It costs credibility and can break the rules.
- Contacting the customer's family, employer or neighbours. Write only to the customer.
- Wrong totals. Pull the statement of account before you write the letter.
- No proof of sending. Use email with a read receipt or recorded post.
What to do after the deadline
The letter only works if the step it names actually happens. Decide the step before you send it.
- If the customer paid, send a receipt and a short thank you the same day.
- If the customer asked for a plan, send a payment agreement letter with dates and amounts.
- If the customer disputes the amount, answer the dispute in writing before anything else.
- If there is no reply, take the step named in the letter and keep a copy of everything sent.
- If the amount is small, compare the cost of the next step with the balance before you go on.
Small claims courts in many countries accept a claim online. Check the limit and the fee where the customer is based.
Fewer letters with reminders on time
Most final demands go to invoices that nobody reminded on time. Makatea sends a WhatsApp reminder before and after each due date and records every payment.
The balance reaches the final demand stage less often. Start free for 14 days with no card.
Free on Makatea: proforma invoice template · promissory note template · rent receipt template · free receipt template
Frequently asked questions
What is a final demand letter?
It is the last written request for payment before formal steps. It gives the amount, a deadline and the next step.
How long should the deadline be?
Fourteen days is common for business debts. In the UK, debts owed by individuals follow the 30-day reply period of the Pre-Action Protocol.
Is a final demand letter the same as a letter before action?
Yes, in practice. Letter before action is the UK name when court proceedings are the next step.
Can I add interest to the demand?
Yes, when the contract or the law allows it. In the UK, business debts can carry statutory interest.
Can I send it by email or WhatsApp?
Yes. Email with the PDF attached is common. Keep proof of sending in case the matter goes further.
Do I need an account to download the template?
No. The Word file downloads directly with no sign-up.
Your recurring collections on autopilot
Makatea sends the reminders over WhatsApp and email, records every payment and tells you who to follow up with first.
14 days free · No card
Keep reading
Payment agreement letter template in Word
Download a free payment agreement letter in Word, no signup. Set the balance, the installment dates and what happens if a payment is missed.
6 payment reminder emails with subject lines
Copy 6 payment reminder email templates with their subject lines, from before the due date to the final notice. Polite, clear and free to reuse.
AR aging report template in Excel
Download a free accounts receivable aging report in Excel, no signup. Days past due, aging buckets and totals per customer calculate on their own.
Collection agency for small business or collecting yourself: what each costs
Most agencies keep a share of what they recover. Compare an agency, a law firm and collecting yourself on WhatsApp: cost, timing and what to ask first.
Accounts receivable collections that run on their own
Automate accounts receivable collections. Makatea reminds on WhatsApp and email, records payments and ranks who to follow up first. 14 days free.
Proforma invoice template
Fill in a proforma invoice online and download it as PDF or as an image for WhatsApp. What it is, what it must show and how it differs from an invoice.
Promissory note: what it is and how to write one
What a promissory note is, what it must include and how to write one, with an example. Fill in a free promissory note online and print it to sign.