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Late payment interest calculator

Work out the statutory interest and compensation you’re owed on overdue invoices — under the Late Payment of Commercial Debts (Interest) Act.

£
%

Use the base rate on 31 Dec (for Jan–Jun) or 30 Jun (for Jul–Dec).

Days overdue

0

Statutory interest rate

0.00%

8% + 0.00% base rate

Original invoice£0.00
Statutory interest£0.00
Compensation fee£0.00

Total you can claim

invoice + interest + compensation

£0.00

This is a guide, not legal advice

Statutory interest and compensation apply to business-to-business (commercial) debts under the Late Payment of Commercial Debts (Interest) Act 1998, unless your contract sets a different rate. Interest accrues daily from the day after payment was due. Figures are an estimate — check the exact Bank of England base rate for the relevant period.

How UK late payment interest works

If another business pays you late, you have a statutory right to claim interest and a fixed sum on top of the debt.

8% + base rate

Statutory interest is 8% above the Bank of England base rate, accruing daily from the day after the payment was due.

Fixed compensation

A fixed sum on top of interest: £40 for debts under £1,000, £70 for £1,000–£9,999.99, and £100 for £10,000 or more.

Which base rate?

Use the base rate on 31 December for interest running Jan–Jun, or 30 June for Jul–Dec.

Late payment interest FAQs

Can I charge interest on late payments?

Yes. For commercial (business-to-business) debts you have a statutory right to charge interest under the Late Payment of Commercial Debts (Interest) Act 1998, unless your contract specifies a different rate.

How much interest can I charge?

Statutory interest is 8% above the Bank of England base rate. It accrues daily from the day after the payment was due until the debt is paid.

What is the late payment compensation fee?

On top of interest you can claim a fixed sum for debt recovery costs: £40 for debts under £1,000, £70 for £1,000 to £9,999.99, and £100 for debts of £10,000 or more. You can also claim reasonable recovery costs above this if they were higher.

Does this apply to consumers?

No. Statutory late payment interest and compensation apply to commercial transactions between businesses, not to debts owed by consumers.

Stop chasing late payments

Neetrix sends automatic payment reminders, tracks every overdue invoice, and keeps your accounting in one place — so you get paid faster without the awkward phone calls.