March 15th is the deadline to file taxes for Corporations and S-Corporations and April 15th is the deadline for Partnerships, LLCs, and Sole Proprietorships. If you don’t think you can get your business taxes done by the deadline, you will need to file an extension.
IMPORTANT: You Must Still Make Your Tax Payment
Even if you file an extension, you must still pay your taxes by the due date, if at all possible. You will have to estimate the taxes due and make your tax payment by the due date.
Tax Extension Due Dates
- Corporations and S Corporations must file their corporate tax returns six months after the end of their fiscal year, so a corporation or s corporation with a December 31 year end must file corporate taxes by March 15. The six-month extension puts the extension due date at September 15.
- Partnerships and multiple-member LLCs must file their partnership returns by April 15. The five-month extension puts the extension due date at September 15.
- A Sole Proprietorship or single-member LLC (filing as a sole proprietorship) must file their returns by April 15. The six-month extension puts the extension due date at October 15.
How to File
Corporate and Partnership Taxes
To file an automatic extension of time for Corporations, S-Corporations, Partnerships, and multiple-member LLCs filing as Partnerships, use Form 7004. This form requires you to estimate the amount of taxes you will owe.
Sole Proprietorships and single-member LLCs filing on Form 1040
To file an automatic extension use Form 4868. This is the form used for personal tax return extensions, but it includes information from your Schedule C – Sole Proprietorship Income.
