Summary
If you make $311,688 a year living in the region of Alberta, Canada, you will be taxed $121,621. That means that your net pay will be $190,067 per year, or $15,839 per month. Your average tax rate is 39.0% and your marginal tax rate is 47.9%. 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 $47.86, hence, your net pay will only increase by $52.14.
Bonus Example
A $1,000 bonus will generate an extra $521 of net incomes. A $5,000 bonus will generate an extra $2,607 of net incomes.