You may be able to access your employers' EIN number from last year by viewing your W2 from last year (2015) if its available. TurboTax can also transfer your information from 2015 into your 2016 return.
Let me show you how
to retrieve last years' tax information. You will need to login to the TurboTax
account you used from last year in order to retrieve your information.
See link below that
explains how to login and transfer your information from last year (2015) to
the current year (2016).
**Please note that
if you used a Free Edition of TurboTax, to transfer last year's return to 2016
Federal Free Edition, you will need to accept the upgrade to TurboTax PLUS. The
option to upgrade to PLUS appears shortly after you sign in.
https://ttlc.intuit.com/replies/3301662
