ExpressExtension is an IRS-authorized e-file provider for all types of business entities, including C-Corps (Form 1120), S-Corps (Form 1120S), Multi-Member LLC, Partnerships (Form 1065). Trusts, and Estates.File Tax Extension Form 7004 InstructionsStep 1- Begin by creating your free account with ExpressExtensionStep 2- Enter the basic business details including: Business name, EIN, Address, and Primary Contact.Step 3- Select the business entity type and choose the form you would like to file an extension for.Step 4- Select the tax year and select the option if your organization is a Holding CompanyStep 5- Enter and make a payment on the total estimated tax owed to the IRSStep 6- Carefully review your form for errorsStep 7- Pay and transmit your form to the IRSClick here to e-file before the deadline