TurboTax Online for 2023 will only be available for another two weeks. After October 15 you will not be able to use TurboTax Online. You could still buy the downloaded TurboTax software and use that. You would have to install it on your own Windows or Mac computer. Which version you should buy depends on what's in your tax return. All the download versions have all of the forms. The difference is in the amount of detail, guidance, and help in the question-and-answer interview.
It's not clear whether you are amending your own tax return or a client's return. You cannot use TurboTax for a client's return.
