Invoice Late Payment Calculator
For UK business-to-business invoices, the Late Payment of Commercial Debts (Interest) Act 1998 lets you charge statutory interest, plus a fixed compensation fee, on an invoice paid late.
Statutory interest is 8% plus the Bank of England base rate on the date the debt became overdue - check the current base rate, since it changes over time.
Statutory interest
Fixed compensation
Total you can claim
Fixed compensation is set by the Late Payment of Commercial Debts Regulations 2013: £40 for debts under £1,000, £70 for £1,000-£9,999.99, and £100 for £10,000 and over. This calculator is a general guide, not legal or financial advice - always check the current rules before invoicing a client.
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