Summary
If you make $39,960 a year living in the region of Ontario, Canada, you will be taxed $10,434. That means that your net pay will be $29,526 per year, or $2,460 per month. Your average tax rate is 26.1% and your marginal tax rate is 27.1%. 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 $27.07, hence, your net pay will only increase by $72.93.
Bonus Example
A $1,000 bonus will generate an extra $729 of net incomes. A $5,000 bonus will generate an extra $3,647 of net incomes.