Using simple interest, compute the interest that accrues after a court judgment, from the judgment date to the actual payment date, and the total amount due.
Input Data
Results
At a glance:Post-judgment interest is simple interest on the awarded amount for the period between the judgment and actual payment.
Formula
interest = judgmentAmount × annualRatePercent% × days / 365
totalDue = judgmentAmount + interest
$$Interest = Principal \times \dfrac{Rate}{100} \times \dfrac{Days}{365}$$$$Total\ Due = Principal + Interest$$How to Use
- Enter the judgment amount.
- Enter the annual rate and delayed days.
- Review the accrued interest and total due.
FAQ
What is the difference between post-judgment and pre-judgment interest?
Both compensate for delayed payment but cover different periods: pre-judgment interest runs from when the loss occurred to the judgment; post-judgment interest runs from the judgment to actual payment. Both are usually statutory interest, with the rate and method set by law or the court.
Why is simple rather than compound interest used?
Post-judgment interest is normally calculated on a simple basis — interest accrues only on the original judgment amount by the day, and the interest itself does not earn interest. This is simpler and more predictable, and matches how most jurisdictions treat statutory interest.
What rate should I enter?
The post-judgment rate is set by the court order or relevant rules and varies by jurisdiction. Use the court-ordered or locally applicable judgment-debt rate; this tool's default is only an example, so for actual use consult a legal professional.
How much more do I pay the longer I delay?
Under simple interest, post-judgment interest is proportional to the delayed days — the longer you drag, the more it accrues, every day. With HK$100,000 at 8%: 30 days costs about HK$658, 90 days about HK$1,973, a full year about HK$8,000. Each extra day adds roughly judgment amount × rate ÷ 365. For the debtor, this is a daily rising cost; for the creditor, it compensates the lost time value of money and pushes the debtor to pay sooner.
Does this apply to Hong Kong court judgments?
The principle applies, but the applicable rate and basis are set by Hong Kong's rules and the court. Hong Kong uses judgment-debt interest at a court-specified rate (often referenced to a statutory rate). This calculator is a simple-interest educational estimate; the actual rate, counting basis (365 or 360 days) and rules follow the court order and local law. For disputes, rely on the judgment and legal advice.
Content review: Calculatorism Finance Team. Results are for reference only; please refer to the relevant authorities for the official figures.