INPUT DETAILS
Bodily Injury 
Prejudgment Interest Calculator
Ontario Only
yyyy-mm-dd
Date of Cause of Action / Date of Loss
Date Notice of Claim Given
Date Claim Issued
Amount of Net General Damages
Amount of Pre-Trial Pecuniary Damages
Type of Case
RESULTS PER RULES
 
Prejudgment Interest Calculator  
Ontario Only
General Damage Interest Rate
Pecuniary Damage Interest Rate
Start Date Start Date Number of Days
For General Damages
For Pecuniary Damages
USING THE RULES AND THE COURTS OF JUSTICE ACT  
File Reference
Starting Amount Interest Total
General Damages
Pre-Trial Pecuniary
Future Pecuniary
 Not Applicable  
  Totals    
 
Per Diem Interest
Date Printed
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RESULTS PER MACLEOD AVERAGING
 
Prejudgment Interest Calculator
Ontario Only
General Damage Interest Rate
Pecuniary Damage Interest Rate
Start Date Start Date Number of Days
For General Damages
For Pecuniary Damages
USING AVERAGE INTEREST PER MACLEOD (ONCA)
File Reference
Starting Amount Interest Total
General Damages
Pre-Trial Pecuniary
Future Pecuniary
 Not Applicable
  Totals  
Per Diem Interest
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USER GUIDE
Using the Prejudgment Interest Calculator
It is strongly advisable that you read David's post "Calculating Pre-Judgment Interest in the Context of a Personal Injury Claim - Not as easy as it appears,"  (link below) which outlines in detail the many nuances in calculating pre-judgment interest. 
Calculating Pre-Judgment Interest in the Context of a Personal Injury Claim - Not as easy as it appears
NOTE ON AVERAGING
 Since 2019, many non-auto personal injury cases have since adopted the averaging approach, whereby the PJI rate is based on the average of the PJI rates that prevailed since the claim was started (See, for example,
MacLeod v. Marshall, 2019 ONCA 842, Aubin v Synagogue and Jewish Community Centre of Ottawa, 2023 ONSC 3926, at paras. 33 – 35, 46; Henry v. Zaitlen, 2022 ONSC 7259, at paras.14 – 29; Rathan et al. v Scheufler et al., 2023 ONSC 3232, at paras. 445-446, Kotorashvili v. Lee, 2024 ONSC 1495, at para 148.

Up to now, the "averaging" methodology has only been applied to non-auto personal injury cases: it has yet to be seen whether the courts will apply the averaging method to automobile related cases.  Indeed, given the right circumstances, the "average" rate could be less than the rate prevailing on the day the claim was started, and in those situations it will be interesting to see what the courts will do.  This calculator provides the average rate results for automobile cases just in case a litigant wishes to make the argument that the average PJI rate should be used in an automobile BI Claim.
       
  Auto B.I.-Claim  
  PJI Rate PJI Start Date  
General Damages Rate on Day Claim Started Date Notice was Given  
       
Pecuniary Damages Half the Prescribed Rate on the Date the Claim was Commenced Date Notice was Given  
       
  Non-Auto B.I.-Claim  
  PJI Rate PJI Start Date  
General Damages 5% Date the Cause of Action Arose  
       
Pecuniary Damages Half the Prescribed Rate on the Date the Claim was commenced Date the Cause of Action Arose  
360Mediations.com
 
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PJI RATES
 
Year 1 2 3 4  
1989
12.40%
1990 12.50% 13.50% 13.90% 12.90%
1991 12.30% 10% 9.10% 8.80%
1992 7.70% 7.50% 6.30% 5.10%
1993 8.30% 6.10% 5.10% 5.00%
1994 4.30% 4.10% 6.60% 5.60%
1995 6.00% 8.00% 7.60% 6.60%
1996 6.10% 5.60% 5.00% 4.30%
1997 3.30% 3.30% 3.30% 3.50%
1998 4.00% 5.00% 5.00% 6.00%
1999 5.30% 5.30% 4.80% 4.80%
2000 5.00% 5.30% 6.00% 6.00%
2001 6.00% 5.80% 4.80% 4.30%
2002 2.50% 2.30% 2.50% 3.00%
2003 3.00% 3.00% 3.50% 3.30%
2004 3.00% 2.80% 2.30% 2.30%
2005 2.80% 2.80% 2.80% 2.80%
2006 3.30% 3.80% 4.50% 4.50%
2007 4.50% 4.50% 4.50% 4.80%
2008 4.80% 4.30% 3.30% 3.30%
2009 2.50% 1.30% 0.50% 0.50%
2010 0.50% 0.50% 0.80% 1.00%
2011 1.30% 1.30% 1.30% 1.30%
2012 1.30% 1.30% 1.30% 1.30%
2013 1.30% 1.30% 1.30% 1.30%
2014 1.30% 1.30% 1.30% 1.30%
2015 1.30% 1.00% 1.00% 1.00%
2016 0.80% 0.80% 0.80% 0.80%
2017 0.80% 0.80% 0.80% 1.00%
2018 1.30% 1.50% 1.50% 1.80%
2019 2.00% 2.00% 2.00% 2.00%
2020 2.00% 2.00% 0.50% 0.50%
2021 0.50% 0.50% 0.50% 0.50%
2022 0.50% 0.50% 1.80% 2.80%
2023 4.00% 4.80% 4.80% 5.30%
2024 5.30% 5.30% 5.30% 4.80%
2025 4.00% 3.30% 3.00% 3.00%
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