Mario Soster
Halton Catholic District School Board/Teacher, Secondary
2025 Salary
$138,455Total compensation $138,455, 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
#217Halton Catholic District School Board
Years on List
92017–2025
Peak Salary
$138,4552025
Full 2025 roster at Halton Catholic District School Board →·See where $138,455 ranks →
Total Compensation History
Full History
2017–2025
$100,630 in 2017 is worth about $126,714 in 2025 dollars.
| Year | Position | Salary |
|---|---|---|
| 2025 | Teacher, SecondaryHalton Catholic District School Board | $138,455Benefits $0Total $138,455 |
| 2024 | Teacher, SecondaryHalton Catholic District School Board | $128,426Benefits $0Total $128,426 |
| 2023 | Teacher, SecondaryHalton Catholic District School Board | $110,181Benefits $0Total $110,181 |
| 2022 | Teacher, SecondaryHalton Catholic District School Board | $110,693Benefits $0Total $110,693 |
| 2021 | Teacher, SecondaryHalton Catholic District School Board | $109,246Benefits $0Total $109,246 |
| 2020 | Teacher, SecondaryHalton Catholic District School Board | $106,310Benefits $0Total $106,310 |
| 2019 | Teacher, SecondaryHalton Catholic District School Board | $106,218Benefits $0Total $106,218 |
| 2018 | Teacher, SecondaryHalton Catholic District School Board | $106,476Benefits $0Total $106,476 |
| 2017 | Secondary Department HeadHalton Catholic District School Board | $100,630Benefits $7Total $100,638 |
Take-Home Pay
(After Tax) · 2025 estimate
Of the $138,455 Mario Soster earned in 2025, roughly $97,335 would remain after income tax, CPP and EI, an all-in deduction rate of about 29.7%. Among those listed as Secondary Teacher in 2025, the median was $118,069; this salary sits about 17% above it. Mario Soster has appeared on the list 9 times since 2017. 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
- ~$97,335
- Effective income-tax rate (excl. CPP/EI)
- ~25.7%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~29.7%
- vs. 2025 Secondary Teacher median
- +17%
Where does $138,455 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.