Summary
If you make $12,979 a year living in the region of New Jersey, USA, you will be taxed $1,284. That means that your net pay will be $11,695 per year, or $975 per month. Your average tax rate is 9.9% and your marginal tax rate is 17.9%. 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 $17.86, hence, your net pay will only increase by $82.14.
Bonus Example
A $1,000 bonus will generate an extra $821 of net incomes. A $5,000 bonus will generate an extra $4,107 of net incomes.