Summary
If you make $12,996 a year living in the region of Montana, USA, you will be taxed $1,389. That means that your net pay will be $11,607 per year, or $967 per month. Your average tax rate is 10.7% and your marginal tax rate is 21.7%. 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 $21.67, hence, your net pay will only increase by $78.33.
Bonus Example
A $1,000 bonus will generate an extra $783 of net incomes. A $5,000 bonus will generate an extra $3,917 of net incomes.