For the tax years 2021 and 2022, the u.s. tax rate will stay at 10 percent, 12 percent, 22 percent, 24 percent, 32 percent, 35 percent, and 37 percent. However, there is a modest inflation adjustment made to the income levels. Continue reading to learn more about the federal income tax brackets for the next tax years 2021 (due April 15, 2022) and 2022. (due April 15, 2023).