William Slofstra
University of Waterloo/Associate Professor
2025 Salary
$202,172Total compensation $202,558, including $386 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
#665University of Waterloo
Years on List
92017–2025
Peak Salary
$202,1722025
Full 2025 roster at University of Waterloo →·See where $202,172 ranks →
Total Compensation History
Full History
2017–2025
$100,500 in 2017 is worth about $126,550 in 2025 dollars.
| Year | Position | Salary |
|---|---|---|
| 2025 | Associate ProfessorUniversity Of Waterloo | $202,172Benefits $386Total $202,558 |
| 2024 | Associate ProfessorUniversity Of Waterloo | $189,236Benefits $319Total $189,555 |
| 2023 | Associate ProfessorUniversity Of Waterloo | $176,513Benefits $273Total $176,786 |
| 2022 | Associate ProfessorUniversity Of Waterloo | $161,547Benefits $218Total $161,764 |
| 2021 | Assistant ProfessorUniversity Of Waterloo | $151,148Benefits $161Total $151,309 |
| 2020 | Assistant ProfessorUniversity Of Waterloo | $144,737Benefits $149Total $144,886 |
| 2019 | Assistant ProfessorUniversity Of Waterloo | $135,484Benefits $149Total $135,633 |
| 2018 | Assistant ProfessorUniversity of Waterloo | $129,417Benefits $149Total $129,565 |
| 2017 | Assistant ProfessorUniversity of Waterloo | $100,500Benefits $131Total $100,631 |
Take-Home Pay
(After Tax) · 2025 estimate
William Slofstra was paid $202,172 in 2025; after income tax, CPP and EI that is roughly $131,679, an effective income-tax rate of about 32.1%. Compared with 2024, when the figure was $189,236, that is a rise of about 7%. For comparison, the median Associate Professor on the 2025 list was paid $174,209; this salary is about 16% more. This estimate leaves out pension contributions; members of OMERS, OTPP, HOOPP or OPTrust typically take home another 7–10% less.
- Estimated net pay
- ~$131,679
- Effective income-tax rate (excl. CPP/EI)
- ~32.1%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~34.9%
- vs. 2025 Associate Professor median
- +16%
Where does $202,172 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.