ExpressExtension Support Find answers to your questions. Get Answers Support Form 7004 General Can I attach additional information to Form 7004? Since we operate according to the IRS instructions for filing an extension, there is no option to add additional statements through our system. Was this helpful? Yes No Related Questions Can I file an extension for my LLC? What are the common reasons for 7004 rejection? Do I need to provide my SSN or EIN when filing my business tax extension 7004? Go to Home Page Need more help? Get in touch with our dedicated support team Contact Us (803) 514-5155 [email protected]