Corporate Tax Return Extension Deadline 2024. If your business is an s corporation, you must file the tax return or extension by the 15th day of the 3rd month after your tax year ends. For example, if your s.
File form 7004, application for automatic extension of time to file certain business income tax, information, and other returns, to request an extension of time to file a. 301 rows together with the deadline for the submission of the tax return (the extension.
