Tax Return 2025 Estimator Online. The income tax calculator estimates the refund or potential owed amount on a federal tax return. India plans to simplify income tax filing rules to make it less tedious for taxpayers and reduce disputes.

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. 35% for incomes over $487,450.