Summary
If you make <b>$45,000</b> a year living in the region of <b>Massachusetts</b>, <b>USA</b>, you will be taxed <b> $9,388</b>. That means that your net pay will be <b>$35,612</b> per year, or <b>$2,968</b> per month. Your average tax rate is <b>20.9%</b> and your marginal tax rate is <b>25.0%</b>. This marginal tax rate means that your immediate additional income will be taxed at this rate. For instance, an increase of <b>$100</b> in your salary will be taxed <b>$24.99</b>, hence, your net pay will only increase by <b>$75.01</b>.
Bonus Example
A <b>$1,000</b> bonus will generate an extra <b>$750</b> of net incomes. A <b>$5,000</b> bonus will generate an extra <b>$3,751</b> of net incomes.