Summary
If you make $64,915 a year living in the region of Massachusetts, USA, you will be taxed $15,384. That means that your net pay will be $49,531 per year, or $4,128 per month. Your average tax rate is 23.7% and your marginal tax rate is 35.0%. 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 $34.99, hence, your net pay will only increase by $65.01.
Bonus Example
A $1,000 bonus will generate an extra $650 of net incomes. A $5,000 bonus will generate an extra $3,251 of net incomes.