If you used the TurboTax desktop editions for tax year 2024 and do not have access to the computer where the 2024 tax return was saved, then you will not be able to transfer the 2024 tax data to a 2025 return.
If you used the TurboTax online editions for tax year 2024, then all you need to do is sign onto the 2025 online tax return with the same User ID that was used to create the 2024 online account for the tax data to transfer to the 2025 return.
To access your current or prior year online tax returns sign onto the TurboTax website with the User ID you used to create the account - https://myturbotax.intuit.com/
