The tax data file for tax year 2023, which has a file extension of .tax2023, has to be copied to the new computer with the 2024 TurboTax desktop software.
When you start a new 2024 tax return the software will look on your hard drive for the 2023 tax data file. If found it will be listed by name. If not found you can browse to the location where your copied the 2023 tax data file.
