After you file

Yes, you can use TurboTax to calculate your estimated taxes.

You will resave a 1099-R for the conversion.  If you get it for your 2024 taxes next year it will be included on the 2024 taxes.

Yes, you should prepare and pay the estimated taxes associated with the conversion.

I would suggest that you include the "$50K' as other income on the 2024 estimates.

 As an alternative you can go to the main menu.

Open Tax Tools

1. On the drop-down select Tools
2. There will be 4 green boxes
3. Select Topics Search
4. Type the Estimated taxes paid for next year
5. The first screen will be Enter Your 2024 W-2 Wage Information
6. Answer the questions and enter amount.
7. You will come to Enter 2024 Other Income
8. Enter the $50K here
9. Continue to the end of the interview.
10. You can print the 1040-ES forms when you file.

The 2024 estimated tax payments are due:

January 1 – March 31, 2024   April 15, 2024

April 1 – May 31, 2024  June 17, 2024

June 1 – August 31, 2024  September 16, 2024

September 1 – December 31, 2024  January 15, 20251

You can mail the individual payments, or

As @fanfare suggested, Use an IRS website.