Prejudgment interest is interest awarded on a monetary claim for the period before judgment, compensating the claimant for being kept out of their money from the date the loss was suffered (or another relevant date) until the court’s decision. It increases the total judgment sum and can significantly affect litigation risk, settlement valuations and case strategy.In England and Wales, prejudgment interest in civil claims is mainly governed by section 35A of the Senior Courts Act 1981, section 69 of the County Courts Act 1984 and, in contract and commercial matters, by statute or the contract itself (including the Late Payment of Commercial Debts (Interest) Act 1998). The court has discretion over whether to award interest, the rate and the period.In Scotland, comparable awards are usually described as judicial interest, awarded under statute and common law. Northern Ireland has provisions similar to England and Wales, principally in the Judicature (Northern Ireland) Order 1980. In Ireland, prejudgment interest is provided for by the Courts Act 1981 and related legislation. Across all four jurisdictions, it is generally discretionary and distinct from post‑judgment interest.