Mark Aitken
County of Simcoe/Chief Administrative Officer
2025 Salary
$336,831Total compensation $338,803, including $1,972 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
#1County of Simcoe
Years on List
232003–2025
Peak Salary
$336,8312025
Full 2025 roster at County of Simcoe →·See where $336,831 ranks →
Total Compensation History
Full History
2003–2025
$104,857 in 2003 is worth about $167,486 in 2025 dollars.
Take-Home Pay
(After Tax) · 2025 estimate
In 2025, Mark Aitken's $336,831 salary works out to roughly $196,483 after income tax, CPP and EI — an all-in deduction rate of about 41.7%. At County of Simcoe, 584 people made the 2025 list with a median salary of $115,219; Mark Aitken's total compensation of $338,803 ranked #1. Compared with 2024, when the figure was $303,695, that is a rise of about 11%. After pension contributions (probably OMERS in this sector), take-home is usually a further 7–10% lower.
- Estimated net pay
- ~$196,483
- Effective income-tax rate (excl. CPP/EI)
- ~40.0%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~41.7%
- vs. 2025 Chief Administrative Officer median
- +69%
Where does $336,831 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.