Summary
If you make $12,958 a year living in the region of Missouri, USA, you will be taxed $997. That means that your net pay will be $11,961 per year, or $997 per month. Your average tax rate is 7.7% and your marginal tax rate is 14.6%. 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 $14.57, hence, your net pay will only increase by $85.43.
Bonus Example
A $1,000 bonus will generate an extra $854 of net incomes. A $5,000 bonus will generate an extra $4,272 of net incomes.