Collect Compare
Compare online
Free tool

Late Payment Calculator

Chasing an overdue commercial invoice? Under the Late Payment of Commercial Debts Act you can add statutory interest (8% above the Bank of England base rate) plus a fixed compensation fee. Work out exactly what you’re owed — then send it.

Your invoice

Statutory interest applies to overdue commercial (business-to-business) invoices. Rate applied: 11.75% (8% + 3.75% base) — fixed by law on the six-monthly reference date for when your debt fell overdue, applied automatically from the due date you enter.

Personalise your letter (optional)

Fill these in and we’ll address the letter for you. Leave blank and the PDF uses clearly-marked spaces to complete by hand.

Tally the Tabby with a calculator
You can claim
£4,806
on a £4,200 invoice
Days overdue—
Daily interest—
Interest to date (11.75%/yr)—
Compensation —
Total to add to your invoice—

A branded PDF demand downloads instantly — and we email you a copy with the full breakdown.

How compensation is set

£40Invoice under £1,000
£70£1,000 – £9,999
£100£10,000 or more

Guidance only, not legal advice. Statutory interest and compensation apply to qualifying commercial debts under the Late Payment of Commercial Debts (Interest) Act 1998.

Accountant, bookkeeper or business site? Put this calculator on your own website →