2025 Tax 1040 Form. As soon as new 2025 relevant tax year data has been released, the tool will the updated accordingly. This tax return and refund estimator is for tax year 2025 and currently based on 2024/2025 tax year tax tables.
This is the final installment date for 2024 estimated tax payments. Form 1040 is the basic form that all tax filers must use to file their federal income taxes.
