Summary
If you make $12,979 a year living in the region of Pennsylvania, USA, you will be taxed $1,404. That means that your net pay will be $11,575 per year, or $965 per month. Your average tax rate is 10.8% and your marginal tax rate is 18.8%. 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 $18.79, hence, your net pay will only increase by $81.21.
Bonus Example
A $1,000 bonus will generate an extra $812 of net incomes. A $5,000 bonus will generate an extra $4,061 of net incomes.