2025 Tax Brackets Married Filing Separately Calculator. Us tax calculator 2025 [for 2026 tax return] this tool is designed to assist with calculations for the 2026 tax return and forecasting for the 2025 tax year. The federal income tax has seven tax rates in 2025:.
Use this effective tax rate calculator to estimate your taxes and rates by year; The income tax calculator estimates the refund or potential owed amount on a federal tax return.