Summary
If you make $38,377 a year living in the region of Massachusetts, USA, you will be taxed $7,732. That means that your net pay will be $30,645 per year, or $2,554 per month. Your average tax rate is 20.2% and your marginal tax rate is 25.0%. 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 $24.99, hence, your net pay will only increase by $75.01.
Bonus Example
A $1,000 bonus will generate an extra $750 of net incomes. A $5,000 bonus will generate an extra $3,751 of net incomes.