ExpressExtension Support Find answers to your questions. Get Answers Support Form 7004 E-filing I only have the Form 7004 data in a pdf format. Can I upload it? No, our bulk upload feature does not support PDF file formats. We recommend uploading your file in one of the following formats for hassle-free processing: xls, xlsx, xlsm, or csv. Was this helpful? Yes No Related Questions I e-filed my 7004 extensions, and the IRS rejected it. How much time do I have to correct it? Go to Home Page Need more help? Get in touch with our dedicated support team Contact Us (803) 514-5155 [email protected]