Summary
If you make $105,300 a year living in the region of Massachusetts, USA, you will be taxed $29,601. That means that your net pay will be $75,699 per year, or $6,308 per month. Your average tax rate is 28.1% and your marginal tax rate is 36.6%. 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 $36.59, hence, your net pay will only increase by $63.41.
Bonus Example
A $1,000 bonus will generate an extra $634 of net incomes. A $5,000 bonus will generate an extra $3,171 of net incomes.