Summary
If you make $99,979 a year living in the region of Ontario, Canada, you will be taxed $29,978. That means that your net pay will be $70,001 per year, or $5,833 per month. Your average tax rate is 30.0% and your marginal tax rate is 42.1%. 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 $42.09, hence, your net pay will only increase by $57.91.
Bonus Example
A $1,000 bonus will generate an extra $579 of net incomes. A $5,000 bonus will generate an extra $2,896 of net incomes.