2024 Tax Calculator Estimated Income. How to calculate federal tax based on your annual income. The federal tax calculator is updated for the 2024/25 tax year and is designed for quick online tax calculations by entering your gross (total) income from tax form 1040 and your gross.

Estimate federal income tax for 2020, 2019, 2018, 2017, 2016, 2015 and 2014, from irs tax rate schedules. Use our income tax calculator to estimate how much you’ll owe in taxes.