1120 Corporate Deadlines
Calendar year returns and extensions are due by 11:59 p.m. local time on Monday, March 16, 2015.
Important! We strongly recommend that you transmit returns and extensions at least one hour prior to the deadline.
Perfection Period for Extensions
Rejected extensions that were punctually filed on March 16, 2015 must be retransmitted electronically within five calendar days of the deadline (11:59 p.m. local time on March 21, 2015) to avoid penalties.
Perfection Period for Returns
Rejected calendar year returns that were punctually filed on March 16, 2015 must be retransmitted electronically within 10 calendar days of the deadline (11:59 p.m. local time on March 26, 2015) to avoid penalties.
Although many states follow federal due dates, deadlines and perfection periods may vary for each state. If you have questions or concerns, please verify due dates with the applicable state agency.
GoSystem Tax RS creates an electronic postmark bearing the Central time zone date and time when the electronic file is received at our host computers. If timeliness of filing is in question, the IRS will use the electronic postmark adjusted to the local time of the taxpayer. For example, if the taxpayer is located in the Eastern time zone, the IRS adds one hour to the electronic postmark to determine the filing time. Conversely, if the taxpayer is located in the Pacific time zone, the IRS subtracts two hours from the electronic postmark.