If your return has been transmitted and rejected by the Indiana Department of Revenue, you can correct your tax return and re-transmit.
If your return has been transmitted and accepted by the Indiana Department of Revenue, you will have to amend your Indiana state tax return. However, before amending your tax return, do not enter the return and do not enter the return and make any changes.
Amended tax returns will not be available before February 15. See forms availability here.
If you used TurboTax Online, log in to your account and select Amend a return that was filed and accepted.
If you used the CD/download product, sign back into your return and select Amend a filed return.
See also this TurboTax Help.
When preparing your tax return, did you identify the EE savings bond interest at this screen?
The screen is found in the entry of the IRS form 1099-INT.