Mark Knowlton
Halton Catholic District School Board/Teacher, Secondary
2025 Salary
$145,738Total compensation $145,738, 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
#147Halton Catholic District School Board
Years on List
92017–2025
Peak Salary
$145,7382025
Full 2025 roster at Halton Catholic District School Board →·See where $145,738 ranks →
Total Compensation History
Full History
2017–2025
$102,042 in 2017 is worth about $128,491 in 2025 dollars.
| Year | Position | Salary |
|---|---|---|
| 2025 | Teacher, SecondaryHalton Catholic District School Board | $145,738 |
| 2024 | Teacher, SecondaryHalton Catholic District School Board | $132,578 |
| 2023 | Teacher, SecondaryHalton Catholic District School Board | $108,687 |
| 2022 | Teacher, SecondaryHalton Catholic District School Board | $110,183 |
| 2021 | Teacher, SecondaryHalton Catholic District School Board | $108,892 |
| 2020 | Teacher, SecondaryHalton Catholic District School Board | $104,856 |
| 2019 | Teacher, SecondaryHalton Catholic District School Board | $104,740 |
| 2018 | Teacher, SecondaryHalton Catholic District School Board | $104,993 |
| 2017 | Secondary TeacherHalton Catholic District School Board | $102,042 |
Take-Home Pay
(After Tax) · 2025 estimate
Of the $145,738 Mark Knowlton earned in 2025, roughly $101,457 would remain after income tax, CPP and EI, an all-in deduction rate of about 30.4%. Within Halton Catholic District School Board, Mark Knowlton's total compensation of $145,738 was the #147 of 1,856, against a median salary of $118,278. Pension contributions — likely OTPP for teachers or OMERS in the School Boards sector — would typically trim another 7–10% off that figure.
- Estimated net pay
- ~$101,457
- Effective income-tax rate (excl. CPP/EI)
- ~26.6%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~30.4%
- vs. 2025 Secondary Teacher median
- +23%
Where does $145,738 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.