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Civil Procedure
Updated 2026-05-22
Statutory interest calculator
Interest accrued on a debt or judgment over a period.
Calculator — accuracy depends on current rates
This calculator uses the rules and figures published on the dates shown. Rates, thresholds, and fees change — always verify the current figure on the official government website before paying or filing. The output is not legal advice.
Rates current as of: .
Privacy: runs entirely in your browser. Nothing you enter is sent to us or saved.
When to use this tool
You're claiming interest on a debt or unpaid invoice — work out the daily-rate accumulated interest.
Statutory interest calculator
Usually the date the debt became due, or the date of breach.
8% is the typical statutory rate for judgment debts; commercial debts may attract a higher rate.