Duncan Kosziwka
Dufferin-Peel Catholic District School Board/Teacher
2025 Salary
$130,593Total compensation $130,695, including $102 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
#1,293Dufferin-Peel Catholic District School Board
Years on List
52020–2025
Peak Salary
$130,5932025
Full 2025 roster at Dufferin-Peel Catholic District School Board →·See where $130,593 ranks →
Total Compensation History
Full History
2020–2025
$101,460 in 2020 is worth about $121,604 in 2025 dollars.
| Year | Position | Salary |
|---|---|---|
| 2025 | TeacherDufferin-Peel Catholic District School Board | $130,593Benefits $102Total $130,695 |
| 2024 | TeacherDufferin-Peel Catholic District School Board | $119,131Benefits $525Total $119,656 |
| 2022 | TeacherDufferin-Peel Catholic District School Board | $102,397Benefits $91Total $102,488 |
| 2021 | TeacherDufferin-Peel Catholic District School Board | $102,295Benefits $87Total $102,381 |
| 2020 | TeacherDufferin-Peel Catholic District School Board | $101,460Benefits $82Total $101,543 |
Take-Home Pay
(After Tax) · 2025 estimate
Take-home on Duncan Kosziwka's 2025 salary of $130,593 comes to roughly $92,887 once federal and Ontario income tax (about 24.7% effective) is deducted. At Dufferin-Peel Catholic District School Board, 4,239 people made the 2025 list with a median salary of $118,020; Duncan Kosziwka's total compensation of $130,695 ranked #1,293. That is about 10% more than the $119,131 paid in 2024. After pension contributions (probably OTPP for teachers or OMERS in this sector), take-home is usually a further 7–10% lower.
- Estimated net pay
- ~$92,887
- Effective income-tax rate (excl. CPP/EI)
- ~24.7%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~28.9%
- vs. 2025 Teacher median
- +11%
Where does $130,593 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.