Summary
If you make $4,488 a year living in the region of Maryland, USA, you will be taxed $422. That means that your net pay will be $4,066 per year, or $339 per month. Your average tax rate is 9.4% and your marginal tax rate is 23.8%. 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 $23.80, hence, your net pay will only increase by $76.20.
Bonus Example
A $1,000 bonus will generate an extra $762 of net incomes. A $5,000 bonus will generate an extra $3,810 of net incomes.