Form 1040 is a federal tax form that U.S. taxpayers use to file their annual income tax return. It helps taxpayers determine how much they owe the IRS or if they're due a tax refund. Based on the ...

Text Callout : Key Takeaways - What Is a 1040 Tax Form and How Does It Work? The 1040 tax form is the form taxpayers use for filing federal taxes. It's also a form that plenty of people have trouble ...

The form you must file to amend your return is 1040-X, the Amended U.S. Individual Income Tax Return. Up until August 2020, you had to print a hard copy of Form 1040-X and mail it to the IRS ...