You can not do a 2022 preliminary/test return in the online versions of Turbotax.
If you used the download (or CD) version of TurboTax (TT), that is, you currently have TT 2021 on your computer. Make a copy of your 2021 return (click file / save as). Name it something like "2022 Preliminary" and then replace your 2021 entries with your 2022 estimates. It won't be exact because the program uses 2021 tables and numbers. But, it should be close enough for most purposes. I use the override feature to change the standard deduction and other numbers, on the forms and worksheets, where appropriate.
Q. Does it help with estimated tax payments?
A. Yes, both download and online TT can be used for 2022 estimated payments.
TurboTax (TT) can prepare the quarterly payment vouchers. In your 2020 software, enter at:
Federal Taxes or Personal (H&B version)
-Other Tax Situations
-Other Tax Forms
-Form W-4 and Estimated Taxes - Click the Start or Update button
On the next screen answer No to the W-4 question
