Summary
If you make $299,954 a year living in the region of Quebec, Canada, you will be taxed $135,099. That means that your net pay will be $164,855 per year, or $13,738 per month. Your average tax rate is 45.0% and your marginal tax rate is 53.0%. 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 $52.97, hence, your net pay will only increase by $47.03.
Bonus Example
A $1,000 bonus will generate an extra $470 of net incomes. A $5,000 bonus will generate an extra $2,352 of net incomes.