Summary
If you make $299,920 a year living in the region of Ontario, Canada, you will be taxed $127,943. That means that your net pay will be $171,977 per year, or $14,331 per month. Your average tax rate is 42.7% and your marginal tax rate is 52.7%. 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 $52.71, hence, your net pay will only increase by $47.29.
Bonus Example
A $1,000 bonus will generate an extra $473 of net incomes. A $5,000 bonus will generate an extra $2,365 of net incomes.