If you make $70,000 a year living in the region of Ontario, Canada, you will be taxed $20,066. That means that your net pay will be $49,934 per year, or $4,161 per month. Your average tax rate is 28.7% and your marginal tax rate is 32.7%. 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 $32.65, hence, your net pay will only increase by $67.35.
A $1,000 bonus will generate an extra $674 of net incomes. A $5,000 bonus will generate an extra $3,368 of net incomes.