About FederalTaxExtension.com

FederalTaxExtension.com explains IRS extensions in plain English and gives you free tools to find your deadline and estimate what you owe. It is operated by Herald Brands LLC, an Illinois company that runs focused, single-topic websites.

How we check facts

• Every deadline, form name, penalty rate and interest rate is checked against IRS.gov, the form instructions or the Internal Revenue Code before it is published.
• Each page shows the date it was last reviewed. We review the whole site before each filing season and whenever the IRS changes a rule or rate.
• Our tools run in your browser. We show the rules they use so you can check the math.
• We are not a tax preparer and do not give individual tax advice. For your situation, talk to a CPA, enrolled agent or other qualified professional.

How the site is funded

The site is free, and we always list the free IRS options first.

Get in touch

Found an error, or have a question about the site? Contact us. We read every message.

Useful next steps: how to file an extension, the deadline checker and Form 4868 explained.