Joanna Kostka
Waterloo Regional Health Network/Registered Nurse
2025 Salary
$127,167Total compensation $127,460, including $293 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
#510Waterloo Regional Health Network
Years on List
12025–2025
Peak Salary
$127,1672025
Full 2025 roster at Waterloo Regional Health Network →·See where $127,167 ranks →
Full History
2025–2025
| Year | Position | Salary |
|---|---|---|
| 2025 | Registered NurseWaterloo Regional Health Network | $127,167Benefits $293Total $127,460 |
Take-Home Pay
(After Tax) · 2025 estimate
In 2025, Joanna Kostka's $127,167 salary works out to roughly $90,947 after income tax, CPP and EI — an all-in deduction rate of about 28.5%. For comparison, the median Registered Nurse on the 2025 list was paid $118,460; this salary is about 7% more. This is Joanna Kostka's first appearance on the Sunshine List. After pension contributions (probably HOOPP in this sector), take-home is usually a further 7–10% lower.
- Estimated net pay
- ~$90,947
- Effective income-tax rate (excl. CPP/EI)
- ~24.2%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~28.5%
- vs. 2025 Registered Nurse median
- +7%
Where does $127,167 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.