If you make $90,000 a year living in the region of Ontario, Canada, you will be taxed $26,371. That means that your net pay will be $63,629 per year, or $5,302 per month. Your average tax rate is 29.3% and your marginal tax rate is 34.4%. 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 $34.39, hence, your net pay will only increase by $65.61.
A $1,000 bonus will generate an extra $656 of net incomes. A $5,000 bonus will generate an extra $3,281 of net incomes.