The Ontario Government has set new judgment interest rates for the first quarter of 2026. Prejudgment interest is 2.5% and postjudgment interest is 4.0%, effective January 1 to March 31.

The Ontario Government has confirmed new judgment interest rates effective January 1, 2026, applying to Q1 2026 only (January 1 to March 31).

For this quarter, prejudgment interest is 2.5%, while postjudgment interest is 4.0%.

Compared to Q4 2025, the prejudgment interest rate has decreased from 3.0% to 2.5%. The postjudgment interest rate remains unchanged at 4.0%.

Prejudgment interest compensates a plaintiff for the time between when a loss occurred and when the court gives judgment. Postjudgment interest applies after the court issues judgment and continues until the debtor pays.

Use Courtready’s free Ontario prejudgment and postjudgment interest calculator to compute interest quickly and accurately. No email sign-up required. Free forever.

Q1 2026: prejudgment interest 2.5%, postjudgment interest 4.0%.