Summary
If you make $39,979 a year living in the region of New Jersey, USA, you will be taxed $7,077. That means that your net pay will be $32,902 per year, or $2,742 per month. Your average tax rate is 17.7% and your marginal tax rate is 22.0%. 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 $22.01, hence, your net pay will only increase by $77.99.
Bonus Example
A $1,000 bonus will generate an extra $780 of net incomes. A $5,000 bonus will generate an extra $3,900 of net incomes.