Late payment calculator

What you can add to an overdue commercial invoice under the Late Payment of Commercial Debts (Interest) Act 1998.

Invoice amount (£, excl. VAT)

Payment due date

Date paid

Still unpaid - calculate up to today

Days overdue - 
Statutory interest  - 
Fixed compensation - 
Total to add - 

Rate applied: - - fixed by law on the six-monthly reference date for when your invoice fell overdue.