Federal — Casualties and Thefts
More about the Federal Form 4684
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File Now with TurboTaxWe last updated Federal Form 4684 in January 2026 from the Federal Internal Revenue Service. This form is for income earned in tax year 2025, with tax returns due in April 2026. We will update this page with a new version of the form for 2027 as soon as it is made available by the Federal government.
Other Federal Corporate Income Tax Forms:
In addition to information about Federal income tax brackets, Tax-Brackets.org provides a total of 775 Federal income tax forms, as well as many federal income tax forms. Here's a list of some of the most commonly used Federal tax forms:
| Form Code | Form Name |
|---|---|
| Form 941 | Employer's Quarterly Federal Tax Return |
| Form 8965 | Health Coverage Exemptions |
| 990 (Schedule I-1) | Continuation Sheet for Schedule I (Form 990) |
| Form 943 | Employer's Annual Federal Tax Return for Agricultural Employees |
| Form 1099-S | Proceeds From Real Estate Transactions |
View all 775 Federal Income Tax Forms
Disclaimer: While we do our best to keep Form 4684 up to date and complete on Tax-Brackets.org, we cannot be held liable for errors or omissions. Is this form missing or out-of-date? Please let us know so we can fix it!
Tax Form Sources:
- Federal Internal Revenue Service ( http://www.irs.gov/ )
- Internal Revenue Service Income Tax Forms ( https://www.irs.gov/forms-instructions-and-publications )