John Irwin
University of Guelph/Sessional Instructor
2025 Salary
$164,356Total compensation $164,356, including $0 in taxable benefits.
Source: Ontario’s Public Sector Salary Disclosure — names paid $100,000 or more that year. How we build this · Report an error on this page
At a Glance
2025
Employer Rank
#664University of Guelph
Years on List
132012–2025
Peak Salary
$245,3532024
Full 2025 roster at University of Guelph →·See where $164,356 ranks →
Total Compensation History
Full History
2012–2025
$126,328 in 2012 is worth about $170,444 in 2025 dollars.
| Year | Position | Salary |
|---|---|---|
| 2025 | Sessional InstructorUniversity Of Guelph | $164,356Benefits $0Total $164,356 |
| 2024 | Sessional InstructorUniversity Of Guelph | $245,353Benefits $0Total $245,353 |
| 2023 | Sessional InstructorUniversity Of Guelph | $232,445Benefits $0Total $232,445 |
| 2022 | Sessional InstructorUniversity Of Guelph | $197,864Benefits $0Total $197,864 |
| 2021 | Sessional InstructorUniversity Of Guelph | $204,252Benefits $0Total $204,252 |
| 2020 | Sessional InstructorUniversity Of Guelph | $189,698Benefits $0Total $189,698 |
| 2019 | Sessional InstructorUniversity Of Guelph | $199,950Benefits $0Total $199,950 |
| 2018 | Sessional InstructorUniversity of Guelph | $187,501Benefits $0Total $187,501 |
| 2017 | Sessional InstructorUniversity of Guelph | $200,520Benefits $0Total $200,520 |
| 2016 | Sessional InstructorUniversity of Guelph | $215,034Benefits $0Total $215,034 |
| 2015 | Sessional InstructorUniversity of Guelph | $183,690Benefits $0Total $183,690 |
| 2013 | Sessional InstructorUniversity of Guelph | $144,901Benefits $0Total $144,901 |
| 2012 | Sessional InstructorUniversity of Guelph | $126,328Benefits $0Total $126,328 |
Take-Home Pay
(After Tax) · 2025 estimate
John Irwin was paid $164,356 in 2025; after income tax, CPP and EI that is roughly $111,785, an effective income-tax rate of about 28.6%. That is about 40% above the 2025 median of $117,342 for Sessional Instructor on the Sunshine List. John Irwin has appeared on the list 13 times since 2012. Members of OMERS, OTPP, HOOPP or OPTrust typically take home another 7–10% less after pension contributions, which this estimate leaves out.
- Estimated net pay
- ~$111,785
- Effective income-tax rate (excl. CPP/EI)
- ~28.6%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~32.0%
- vs. 2025 Sessional Instructor median
- +40%
Where does $164,356 rank on the Sunshine List? →
Estimate only: 2025 federal and Ontario rates, basic personal amounts, Canada employment amount and CPP/EI credits; single, employment income only, salary treated as full-year income. Ignores pension contributions (OMERS, HOOPP, OTPP, OPTrust and similar plans lower actual take-home), union dues, RRSPs and benefits.