Summary
If you make $18,491 a year living in the region of Missouri, USA, you will be taxed $2,108. That means that your net pay will be $16,383 per year, or $1,365 per month. Your average tax rate is 11.4% and your marginal tax rate is 21.4%. 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 $21.35, hence, your net pay will only increase by $78.65.
Bonus Example
A $1,000 bonus will generate an extra $787 of net incomes. A $5,000 bonus will generate an extra $3,933 of net incomes.