@ginoccm wrote:
If I download desktop version, am I able to transfer all my work from online to desktop?
Yes, you can download the 2021 online tax data file which can be opened with the 2021 desktop software.
See this TurboTax support FAQ for saving the tax data file using the online editions - https://ttlc.intuit.com/community/saving/help/how-do-i-save-my-turbotax-online-return-as-a-tax-data-...
