Summary
If you make $299,988 a year living in the region of Maine, USA, you will be taxed $109,593. That means that your net pay will be $190,395 per year, or $15,866 per month. Your average tax rate is 36.5% and your marginal tax rate is 44.4%. 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 $44.40, hence, your net pay will only increase by $55.60.
Bonus Example
A $1,000 bonus will generate an extra $556 of net incomes. A $5,000 bonus will generate an extra $2,780 of net incomes.