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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. We use a Bank of England base rate of 4.75%.

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 (12.75%/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.