Summary
If you make $17,940 a year living in the region of Missouri, USA, you will be taxed $1,990. That means that your net pay will be $15,950 per year, or $1,329 per month. Your average tax rate is 11.1% and your marginal tax rate is 21.1%. 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 $21.11, hence, your net pay will only increase by $78.89.
Bonus Example
A $1,000 bonus will generate an extra $789 of net incomes. A $5,000 bonus will generate an extra $3,945 of net incomes.