Summary
If you make $299,971 a year living in the region of Quebec, Canada, you will be taxed $135,108. That means that your net pay will be $164,863 per year, or $13,739 per month. Your average tax rate is 45.0% and your marginal tax rate is 53.1%. 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 $53.10, hence, your net pay will only increase by $46.90.
Bonus Example
A $1,000 bonus will generate an extra $469 of net incomes. A $5,000 bonus will generate an extra $2,345 of net incomes.