John Williamson
Regional Municipality of Halton/Senior Project Advisor
2025 Salary
$148,943Total compensation $149,643, including $700 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
#500Regional Municipality of Halton
Years on List
62020–2025
Peak Salary
$148,9432025
Full 2025 roster at Regional Municipality of Halton →·See where $148,943 ranks →
Total Compensation History
Full History
2020–2025
$112,522 in 2020 is worth about $134,862 in 2025 dollars.
| Year | Position | Salary |
|---|---|---|
| 2025 | Senior Project AdvisorRegional Municipality Of Halton | $148,943 |
| 2024 | Senior Project AdvisorRegional Municipality Of Halton | $136,185 |
| 2023 | Senior Project AdvisorRegional Municipality Of Halton | $129,683 |
| 2022 | Senior Project AdvisorRegional Municipality Of Halton | $123,247 |
| 2021 | Senior Project AdvisorRegional Municipality Of Halton | $116,838 |
| 2020 | Senior Project AdvisorRegional Municipality Of Halton | $112,522 |
Take-Home Pay
(After Tax) · 2025 estimate
Take-home on John Williamson's 2025 salary of $148,943 comes to roughly $103,271 once federal and Ontario income tax (about 27.0% effective) is deducted. At Regional Municipality of Halton, 2,135 people made the 2025 list with a median salary of $128,827; John Williamson's total compensation of $149,643 ranked #500. That is about 9% more than the $136,185 paid in 2024. Most Municipalities & Services employees belong to OMERS, so actual take-home is likely another 7–10% lower after pension contributions.
- Estimated net pay
- ~$103,271
- Effective income-tax rate (excl. CPP/EI)
- ~27.0%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~30.7%
- vs. 2025 Senior Project Advisor median
- +2%
Where does $148,943 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.