Did you file your state taxes with TurboTax in TY15? If so, follow the guidelines in the FAQ below.
Making
sure you log in with the same TurboTax account information you used last year.
If
you're not sure what email/user ID you used, run this recovery tool https://myturbotax.intuit.com/account-recovery/ on any email addresses you may have used.
Once you’re in your account follow the instructions below.
https://ttlc.intuit.com/replies/5574744