Sorry you can’t efile prior year returns with Turbo Tax. You will have to print and mail them. So be sure to attach copies of your W2s and any 1099s that have withholding on them. You have to mail federal and state in separate envelopes because they go to different places. Get a tracking number from the post office when you mail them for proof of filing.
You will need to use the Desktop installed version to do or finish a prior year.
