What our Calculator Can Do:

Our calculator will determine the IRBs payable for your employed claimant by calculating their pre-accident and post-accident income/collateral benefits received.
The Davis Martindale calculator will determine the pre-accident income for a claimant who is 65 and under at the date of loss.

What our Calculator Cannot Do:

This calculator cannot calculate a self-employed claimant’s IRBs payable.
Our IRB calculator does not calculate any post-accident income for claimants who are 65 and over at the date of loss.
Our calculator can only provide calculations for accidents occurring on or after September 1, 2010.


1. Enter the claimant’s name, date of birth and the date of loss.
2. Enter the payable period. This is the entire entitlement period for which you would like the IRB calculated.
3. Enter your claimant’s pre-accident employment income in the “Pre-Accident Income” tab. The calculator lets you add up to four jobs.
4. Navigate to the “Post-Accident Income” tab. Within this tab you can set post-accident periods that relate to income earned and/or collateral benefits received. You can add multiple periods that fall into the entire “payable period” as set out in Step 2.
5. Review your calculations on the “Summary” tab and feel free to print or save them to PDF.


This calculator is not to be used for any purpose other than that expressly stated by Davis Martindale. We do not accept responsibility for any losses arising from unauthorized or improper use of this calculator. We reserve the right, at our discretion, to make revisions to this calculator.

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Claim Information

Claimant's Name
Date of Birth
Date of Loss
Claim Number Policy Max
Payable Period 0 weeks
Clear Fields Next ->

Pre-Accident Income

  52 Weeks
4 Weeks
Remove Week 1 Week 2 Week 3 Week 4
Regular Wages (incl. Overtime)
Employment Insurance
Add Job +

Total Gross Pre-Accident Income 0.00 0.00
Weekly Gross Pre-Accident Income 0.00 0.00
Pre-MVA Income for IRB 0.00
70% of Pre-MVA Income for IRB 0.00
Clear Fields Next ->

Post-Accident Income

Selected dates are outside of payable period.

Add Another Income

Remove Period
Selected dates are outside of payable period.

Add Another Income

Remove Period
Add Period +

Total Gross Post-Accident Income 0.00
Total Collateral Benefits 0.00
Clear Fields Next ->


Income Replacement Benefit (70%) 0.00
Less: Collateral Benefits (100%) 0.00
Weekly IRB Payable 0.00
Maximum IRB Payable $400.00 0.00
Less: Post MVA Income (70%) 0.00
Weekly IRB Payable $400.00 0.00
Number of Weeks 0.00
Period IRB Payable 0.00
Total IRB Payable 0.00
Amounts Paid to-date
Overpayment/Underpayment of IRBs 0.00
IRB as per Section 52(2) adjustment 0.00
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Assumptions and Notes
  • Our IRB calculator has been created in accordance with Statutory Accident Benefits Schedule – Ontario Regulation 34/10 – Effective September 1, 2010
  • Our calculator does not consider claimants who are self-employed prior to or subsequent to the accident