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For UK businesses with unpaid invoices

You’re owed more than the invoice.

When another business pays you late, UK law lets you add a fixed £40 to £100 and interest at 8% above the Bank of England base rate. Owed works out exactly what you can claim and writes the chasing emails for you.

Free. No sign-up. Your figures stay in your browser.

What they owe you

Example invoice

The invoice

Who owes you?

A limited company or LLP A sole trader or partnership A public body A private person

Amount unpaid

The invoice total including VAT, or what’s left if they’ve paid part.

Invoice number

Payment was due on

No date agreed? It’s 30 days after they got the invoice or you delivered, whichever is later.

Work it out up to

Usually today. The letters are dated this day.

Use a different base rate

Bank of England base rate (%)

Leave blank to use the official rate for this debt.

For the letters

Their business name

Their contact optional

Your name

Your business name optional

Your address for the formal letter

Your email or phone optional

How they can pay you optional

Your details are remembered in this browser.

Statement of account

Larkspur Retail Ltd

No. INV-0142Due 1 October 2026

Overdue38 days

Invoice	£2,500.00
Fixed sumfor a debt of £1,000 to £9,999.99	£70.00
Statutory interest38 days at 11.75% a year	£30.58
Total dueon 8 November 2026	£2,600.58

Interest adds £0.80 for every day it stays unpaid.

How this was worked out

Interest started on 2 October 2026, the day after payment was due.
The base rate for this debt is 3.75%, the rate on 30 June 2026. It stays fixed for the whole debt.
£2,500.00 × 11.75% × 38 days ÷ 365 = £30.58
The fixed sum for a debt of £1,000 to £9,999.99 is £70.00, charged once per invoice.

Get the letters

Send the chaser

Start polite. Each step is firmer than the last, and each one uses the figures above.

Subject Invoice INV-0142: payment reminder

Hi Alex, I hope you’re well. This is a quick reminder that invoice INV-0142 for £2,500.00 was due on 1 October 2026 and is now 38 days overdue. Could you let me know when it will be paid? If payment is already on its way, thank you, and please ignore this email. The payment details are on the invoice. Thanks, Sam Patel Patel Studio

When to send it

As soon as the payment date passes. It doesn’t mention interest, so it reads as a friendly nudge.

Charges invoice

GOV.UK suggests sending a new invoice for the interest and fixed sum. This one uses the figures above.

Bill the extras. GOV.UK suggests sending a new invoice for the interest and fixed sum. Pro writes it for you.

See Pro

Who owes you

Nothing saved yet.

Free plan: 0 of 3 invoices used. See what Pro adds

Chase plan: formal notice days after the reminder, then the letter before action days after that.

Import overdue invoices

Export your unpaid invoices as a CSV file from Xero, QuickBooks, FreeAgent or a spreadsheet. Owed reads the client, invoice number, amount still due and due date. Dates are read as day/month/year unless the file shows otherwise.

CSV file

Or paste the rows here

Client column

Invoice number column

Amount due column

Due date column

These clients are

Client	Invoice	Amount due	Due date	Status

Your list is empty. Press “Save to my list” on a statement to track it here. The totals go up each day as interest is added. The list is kept in this browser only.

Owed Pro

For businesses with more than the odd late payer. Pro plans your chasing and keeps the paper trail.

Free

£0

What you’re owed, worked out to the penny
All three chasing letters
Track up to 3 invoices

Pro

£19a month

Unlimited invoices
A chase plan that shows who to chase today, and with which letter
A log of every letter sent, with notes
Import overdue invoices from a CSV file
A charges invoice for the interest and fixed sum

Coming next:

Chasers sent automatically from your own email
Sync with Xero and QuickBooks
PDF letters on your letterhead

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The rules, briefly

From the Late Payment of Commercial Debts (Interest) Act 1998 and GOV.UK guidance.

Who can claim: Any business owed money by another business or a public body. Sales to private individuals aren’t covered.
When a payment is late: After the payment date you agreed. With no agreed date, 30 days after they got the invoice or you delivered, whichever is later. Terms between businesses usually shouldn’t exceed 60 days, or 30 days for public bodies.
The interest: 8% a year above the Bank of England base rate, as simple interest counted daily. Each debt uses one fixed base rate: the rate on 30 June if it went late between 1 July and 31 December, or on 31 December if it went late between 1 January and 30 June.
The fixed sum: £40 for debts under £1,000, £70 up to £9,999.99 and £100 for £10,000 or more, once per invoice. You can also claim reasonable extra costs of recovering the debt.
When it doesn’t apply: If your contract sets its own interest rate for late payment, you use that rate instead.
Adding it to the bill: GOV.UK suggests sending a new invoice for the interest. Interest and the fixed sum are compensation, so they’re generally treated as outside the scope of VAT. Check with your accountant if you’re unsure.