If you make $40,000 a year living in the region of Alabama, USA, you will be taxed $7,785. That means that your net pay will be $32,215 per year, or $2,685 per month. Your average tax rate is 19.5% and your marginal tax rate is 24.1%. 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 $24.05, hence, your net pay will only increase by $75.95.
A $1,000 bonus will generate an extra $760 of net incomes. A $5,000 bonus will generate an extra $3,798 of net incomes.