ExtensionTax.Com enables E-Filing of Extension Tax Forms like Form 7004, 8868, 4868 for Personal, Business Income and Not-for-Profit Organization extension returns. ExtensionTax.com is certified and authorized by IRS as their e-file partner for all the above extension forms and it is from the professionals and industry leaders who have rich experience in Tax domain and e-filing products since 2007. ExtensionTax.com is a user-friendly, simple to use online application. It can be accessed from any computers at any time with just internet connection. ExtensionTax.com is a product of ThinkTrade Inc. ThinkTrade Inc. has been in the electronic tax filing industry for more than 3 years and it is one of the reliable companies in electronic tax filing industry.