If you make $40,000 a year living in the region of Louisiana, USA, you will be taxed $7,490. That means that your net pay will be $32,510 per year, or $2,709 per month. Your average tax rate is 18.7% and your marginal tax rate is 23.6%. 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 $23.55, hence, your net pay will only increase by $76.45.
A $1,000 bonus will generate an extra $765 of net incomes. A $5,000 bonus will generate an extra $3,823 of net incomes.