Summary
If you make $18,623 a year living in the region of South Dakota, USA, you will be taxed $1,992. That means that your net pay will be $16,631 per year, or $1,386 per month. Your average tax rate is 10.7% and your marginal tax rate is 17.7%. 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 $17.65, hence, your net pay will only increase by $82.35.
Bonus Example
A $1,000 bonus will generate an extra $824 of net incomes. A $5,000 bonus will generate an extra $4,118 of net incomes.