8% statutory interest calculator for small claims

Calculate the 8% statutory interest you can add to a small claims court debt. Working calculator under section 69 County Courts Act 1984. Daily rate, total accrued, and what to claim.

Calculate your interest

Days since debt fell due

Total interest accrued

Total to claim today

Add the daily rate of

per day until judgment. Interest continues to accrue from filing through to payment.

8% per annum is the statutory rate under section 69 of the County Courts Act 1984. For commercial debts (B2B), use the Late Payment of Commercial Debts (Interest) Act 1998 — same 8% above Bank of England base rate.

8% statutory interest calculator for small claims

When you can add interest

• — from the date the invoice was due (typically 30 days from issue, or as stated in the contract).
• — from the date repayment was due under the loan agreement.
• Goods returned for refund but not refunded
• — from the date you returned the goods.
• Deposit not returned
• — from the date the trader was obliged to return it (end of tenancy, completion of work, etc.).
• Damages for breach of contract
• — from the date the breach caused you the loss.