There are two releases for TTBInc each year: R1 and R2.
R1 is released at mid-end November and supports tax year ending on May 31 of the following year.
R2 is released at mid-end June and supports tax year ending on October 31 of the same year.
Visit our support article for more information on releases.
How do I know which version of TTBInc I'm using?
Select the About option from the Help menu:
The About TurboTax Business Incorporated window displays:
The version and build displays: