Summary
If you make $39,920 a year living in the region of Kentucky, USA, you will be taxed $7,942. That means that your net pay will be $31,978 per year, or $2,665 per month. Your average tax rate is 19.9% and your marginal tax rate is 24.7%. 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 $24.65, hence, your net pay will only increase by $75.35.
Bonus Example
A $1,000 bonus will generate an extra $754 of net incomes. A $5,000 bonus will generate an extra $3,768 of net incomes.