Spring deadline due dates

All deadlines are 11:59:59 pm local time. We recommend you transmit electronic files to Thomson Reuters at least 1 hour prior to the filing deadline.
Entity type
IRS e-filing opens
Timely filed deadline
TBD
04/15/2026
TBD
03/16/2026 for 1120-S
04/15/2026 for 1120-C
TBD
03/16/2026
TBD
04/15/2026
TBD
05/15/2026
709
N/A
04/15/2026
706
N/A
Within 9 months of the decedent's death
FBAR
N/A
04/15/2026
N/A
07/31/2026 for form 5500 and 5558
09/16/2026 for form 5500 as a Direct Filing Entity

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