How to Calculate Pre Judgment Interest Ontario

Pre-judgment interest is a legal concept in Ontario that allows a court to award interest on a debt before a final judgment is made. This guide explains how to calculate pre-judgment interest, the applicable interest rates, and provides a practical calculator to determine the amount.

What is Pre-Judgment Interest?

Pre-judgment interest is the interest that a court may award on a debt before a final judgment is made. In Ontario, pre-judgment interest is calculated from the date the debt was incurred until the date of the final judgment. This interest is intended to compensate the creditor for the time value of money while the case is pending.

Pre-judgment interest is different from post-judgment interest, which is calculated from the date of the final judgment until the debt is paid in full.

The calculation of pre-judgment interest is governed by the Interest Act and the Rules of Civil Procedure in Ontario. The interest rate used is typically the same as the rate applicable to post-judgment interest, which is based on the prime rate plus a specified percentage.

How to Calculate Pre-Judgment Interest

To calculate pre-judgment interest, you need to determine the principal amount, the interest rate, and the time period over which the interest is calculated. The formula for calculating pre-judgment interest is:

Pre-Judgment Interest = Principal × (Interest Rate × Time Period)

Where:

Principal is the amount of money owed.
Interest Rate is the annual interest rate applicable to the debt.
Time Period is the number of days, months, or years over which the interest is calculated.

The interest rate for pre-judgment interest in Ontario is typically calculated as the prime rate plus 2.5%. The prime rate is set by the Bank of Canada and is updated periodically. The time period is usually calculated in days, with a daily interest rate of (annual rate / 365).

Interest Rates in Ontario

The interest rate for pre-judgment interest in Ontario is based on the prime rate plus a specified percentage. As of the latest updates, the prime rate is approximately 5.25%, so the applicable pre-judgment interest rate would be:

Pre-Judgment Interest Rate = Prime Rate + 2.5% = 5.25% + 2.5% = 7.75%

This means that the daily interest rate would be 7.75% divided by 365, or approximately 0.02125% per day.

Interest rates can change over time, so it's important to use the most current prime rate when calculating pre-judgment interest.

Example Calculation

Let's walk through an example to illustrate how to calculate pre-judgment interest. Suppose you owe $10,000, and the pre-judgment interest rate is 7.75% per year. The time period is 90 days.

Daily Interest Rate = 7.75% ÷ 365 ≈ 0.02125% per day

Pre-Judgment Interest = $10,000 × (0.02125% × 90) ≈ $191.25

In this example, the pre-judgment interest would be approximately $191.25.

Pre-Judgment Interest Calculation Summary
Principal	Interest Rate	Time Period	Pre-Judgment Interest
$10,000	7.75%	90 days	$191.25

FAQ

What is the difference between pre-judgment and post-judgment interest?

Pre-judgment interest is calculated from the date the debt was incurred until the date of the final judgment, while post-judgment interest is calculated from the date of the final judgment until the debt is paid in full.

How is the interest rate for pre-judgment interest determined?

The interest rate for pre-judgment interest in Ontario is typically the prime rate plus 2.5%. The prime rate is set by the Bank of Canada and is updated periodically.

Can pre-judgment interest be claimed on all types of debts?

Pre-judgment interest is generally applicable to debts that are enforceable by a court, such as unpaid invoices, loans, or other financial obligations.

Is pre-judgment interest taxable?

Pre-judgment interest is typically taxable as income for the recipient, as it represents a return on the debtor's money while the case is pending.