Summary
If you make $299,958 a year living in the region of Alberta, Canada, you will be taxed $116,009. That means that your net pay will be $183,949 per year, or $15,329 per month. Your average tax rate is 38.7% and your marginal tax rate is 47.1%. 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 $47.08, hence, your net pay will only increase by $52.92.
Bonus Example
A $1,000 bonus will generate an extra $529 of net incomes. A $5,000 bonus will generate an extra $2,646 of net incomes.