Tax Return Calculator 2025 2025. The federal tax calculator is updated for the 2025/26 tax year and is designed for quick online tax calculations by entering your gross (total) income from tax form 1040 and your gross expenses from tax form 1040 for 2025/26. You may also be interested in using our free online 2025 tax calculator which automatically calculates your federal and state tax return for 2025 using the 2025 tax tables (2025.

By inputting relevant data, it uses tax brackets and rules to provide an accurate calculation. Use smartasset’s tax return calculator to see how your income, withholdings, deductions and credits impact your tax refund or balance due amount.