Summary
If you make $99,990 a year living in the region of Ontario, Canada, you will be taxed $29,982. That means that your net pay will be $70,008 per year, or $5,834 per month. Your average tax rate is 30.0% and your marginal tax rate is 42.7%. This marginal tax rate means that your immediate additional income will be taxed at this rate. For instance, an increase of $100 in your salary will be taxed $42.67, hence, your net pay will only increase by $57.33.
Bonus Example
A $1,000 bonus will generate an extra $573 of net incomes. A $5,000 bonus will generate an extra $2,867 of net incomes.