Summary
If you make $166,700 a year living in the region of Idaho, USA, you will be taxed $51,260. That means that your net pay will be $115,440 per year, or $9,620 per month. Your average tax rate is 30.8% and your marginal tax rate is 31.5%. 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 $31.45, hence, your net pay will only increase by $68.55.
Bonus Example
A $1,000 bonus will generate an extra $686 of net incomes. A $5,000 bonus will generate an extra $3,428 of net incomes.