Yes, there is still a waiver explanation in 2024 using Form 2210.
If you are using TurboTax Desktop, you can get to the screens regarding the waiver of the underpayment of tax penalty as follows:
If you are using TurboTax Online you can get to the screens regarding the waiver of the underpayment of tax penalty as follows:
This will trigger the preparation of Form 2210 for your waiver explanation for the underpayment penalty.
Click here for "What is Form 2210?"
Click here for" Everything to Know About the 1040-SR Form for Filing Seniors"