Summary
If you make $255,580 a year living in the region of Massachusetts, USA, you will be taxed $85,563. That means that your net pay will be $170,017 per year, or $14,168 per month. Your average tax rate is 33.5% and your marginal tax rate is 41.5%. 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 $41.48, hence, your net pay will only increase by $58.52.
Bonus Example
A $1,000 bonus will generate an extra $585 of net incomes. A $5,000 bonus will generate an extra $2,926 of net incomes.