SMALL CLAIMS CALCULATORS

Pre-Judgment Interest Calculator โ€” Canada

Calculate interest owed on a debt from the date it arose to today.

$
Ontario CJA rate ~3โ€“5%. Use your contract rate if applicable.
Number of months from when the debt arose to today.

Enter your details to see results

Disclaimer: This uses simple interest. Actual court awards depend on applicable rate and judge discretion. Not legal advice.

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Frequently Asked Questions

What rate applies to pre-judgment interest in Ontario?
Under the Courts of Justice Act, the pre-judgment interest rate is set by regulation and updated quarterly. It is generally tied to the Bank of Canada rate. For most contract debts, the contractual rate applies instead if specified in the agreement.
Is pre-judgment interest automatically awarded?
In Ontario small claims court, the deputy judge has discretion to award pre-judgment interest. Claimants must request it in their claim. Courts generally award it for straightforward debt cases.
Does the interest rate change if there is a contract?
Yes. If your contract specifies an interest rate (e.g., 18% per annum on overdue invoices), the court will typically apply the contractual rate rather than the statutory rate.

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