If you started your 2020 return on TurboTax Online you have until 9 PM PT October 29 to file your return online, but it may be subject to late filing fees.
If your 2020 return is in rejected status, you have through October 20 to resubmit it electronically for it to not be considered late. Resubmitting after October 20 could result in late filing fees.
TurboTax Online: To resubmit, simply follow the on-screen instructions after signing in. If you choose to paper-file, select File and follow the steps to file by mail.
TurboTax CD/Download software: To resubmit, reopen your return and follow the on-screen instructions. If you choose to paper-file, select the File by mail option.
After October 29, the functionality of TurboTax Online 2020 is limited to amending and resubmitting rejected 2020 returns previously filed through TurboTax Online. It can no longer be used to start, finish, or e-file 2020 returns. Unfinished 2020 TurboTax Online returns can be transferred to the TurboTax CD/download software for paper-filing.