Business Tax Extension Deadline 2024 S Corporation In India. File business taxes after an extension, partnerships, llcs and s corporations using. 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.

You do, however, still have to file a tax return: No extension was proposed for new manufacturing companies for which the deadline to commence manufacturing/production is march 31, 2024, u/s 115bab.