- This event has passed.
IMPORTANT DEADLINE: S-Corps, S Elections, Partnerships and Large Partnerships
S-CORPORATIONS: S-Corps file calendar year 2017 tax returns and pay any money still due. They can file an automatic 6-month extension using Form 7004 BUT this is NOT an extension to pay.
PARTNERSHIPS: 2017 calendar year returns are due and K-1s must be given to each partner. An automatic 6-month extension using Form 7004 can be filed.
S ELECTIONS: S elections must file Form 2553 if you wish to be treated as an S-Corp in 2018.
LARGE PARTNERSHIPS: Large partnerships must provide each partner with a copy of their Schedule K-1 from Form 1065-B. This due date still applies even if the partnership requests an extension of time to file Form 1065-B by filing Form 7004.