Summary
If you make $12,948 a year living in the region of Delaware, USA, you will be taxed $1,244. That means that your net pay will be $11,704 per year, or $975 per month. Your average tax rate is 9.6% and your marginal tax rate is 16.9%. 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 $16.94, hence, your net pay will only increase by $83.06.
Bonus Example
A $1,000 bonus will generate an extra $831 of net incomes. A $5,000 bonus will generate an extra $4,153 of net incomes.