If you have already filed your return, you cannot cancel it, change it, or get it back.
If you have not filed your return yet, you can use the clear & start over option to remove any information you entered, then you can just exit your account.
In TurboTax Online, you can erase your return and start from scratch as long as you haven't submitted payment, deducted the TurboTax fee from your refund, or registered.
How do I clear and start over in TurboTax Online?
