Summary
If you make $3,948 a year living in the region of Oregon, USA, you will be taxed $620. That means that your net pay will be $3,328 per year, or $277 per month. Your average tax rate is 15.7% and your marginal tax rate is 12.5%. 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 $12.49, hence, your net pay will only increase by $87.51.
Bonus Example
A $1,000 bonus will generate an extra $875 of net incomes. A $5,000 bonus will generate an extra $4,376 of net incomes.