Summary
If you make $399,984 a year living in the region of British Columbia, Canada, you will be taxed $175,504. That means that your net pay will be $224,480 per year, or $18,707 per month. Your average tax rate is 43.9% and your marginal tax rate is 53.5%. 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 $53.50, hence, your net pay will only increase by $46.50.
Bonus Example
A $1,000 bonus will generate an extra $465 of net incomes. A $5,000 bonus will generate an extra $2,325 of net incomes.