I have a situation where I've complete my mother-in-law's return (she is 96 and I've done it for years). She owes $0 and has $0 refund. I could e-file Federal but when prompted for state e-filing (cost $20) it presents a billing form; when correctly filled out, it only displays the BACK button and does not allow payment. Is mailing the CA return the only option? The Federal return e-filed easily. I am running Turbo Tax Deluxe on my desktop (am Advantage customer). This worked fine last year.
