Summary
If you make $629,980 a year living in the region of New Jersey, USA, you will be taxed $257,437. That means that your net pay will be $372,543 per year, or $31,045 per month. Your average tax rate is 40.9% and your marginal tax rate is 49.3%. 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 $49.25, hence, your net pay will only increase by $50.75.
Bonus Example
A $1,000 bonus will generate an extra $508 of net incomes. A $5,000 bonus will generate an extra $2,538 of net incomes.