William Kou
Regional Municipality of York/Epidemiologist
2025 Salary
$113,151Total compensation $113,519, including $368 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
#1,460Regional Municipality of York
Years on List
92017–2025
Peak Salary
$114,8162020
Full 2025 roster at Regional Municipality of York →·See where $113,151 ranks →
Total Compensation History
Full History
2017–2025
$100,530 in 2017 is worth about $126,588 in 2025 dollars.
| Year | Position | Salary |
|---|---|---|
| 2025 | EpidemiologistRegional Municipality Of York | $113,151Benefits $368Total $113,519 |
| 2024 | EpidemiologistRegional Municipality Of York | $112,511Benefits $365Total $112,876 |
| 2023 | EpidemiologistRegional Municipality Of York | $110,305Benefits $358Total $110,663 |
| 2022 | EpidemiologistRegional Municipality Of York | $110,736Benefits $452Total $111,188 |
| 2021 | EpidemiologistRegional Municipality Of York | $106,730Benefits $449Total $107,180 |
| 2020 | EpidemiologistRegional Municipality Of York | $114,816Benefits $647Total $115,463 |
| 2019 | EpidemiologistRegional Municipality Of York | $102,910Benefits $433Total $103,344 |
| 2018 | EpidemiologistRegional Municipality of York | $101,150Benefits $489Total $101,640 |
| 2017 | EpidemiologistRegional Municipality of York | $100,530Benefits $385Total $100,915 |
Take-Home Pay
(After Tax) · 2025 estimate
Of the $113,151 William Kou earned in 2025, roughly $82,869 would remain after income tax, CPP and EI, an all-in deduction rate of about 26.8%. For comparison, the median Epidemiologist on the 2025 list was paid $114,032; this salary is about 1% less. Compared with 2024, when the figure was $112,511, that is a rise of about 1%. After pension contributions (probably OMERS in this sector), take-home is usually a further 7–10% lower.
- Estimated net pay
- ~$82,869
- Effective income-tax rate (excl. CPP/EI)
- ~21.9%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~26.8%
- vs. 2025 Epidemiologist median
- −1%
Where does $113,151 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.