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 ...

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 ...