You fill out Schedule C at tax time and attach it to or file it electronically with Form 1040. Schedule C is typically for people who operate sole proprietorships or single-member LLCs.

Some taxpayers have to attach additional forms to the 1040. For example, sole proprietors who have self-employment income to report must complete a Schedule C form to declare the income (or loss ...

If you’re preparing your taxes, you'll file federal income tax Form 1040. Because tax laws change often, Form 1040 might have subtle differences from year to year. Form 1040 is the main form ...

Constantine Johnny / Getty Images Schedule A (Form 1040 or 1040-SR): Itemized Deductions is an Internal Revenue Service (IRS) form for U.S. taxpayers who itemize their tax-deductible expenses ...

Form 1040: If you’re using a tax filing service ... You could also get a 1099-DIV form, which tracks investment dividends and ...

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 ...