Yes, you will enter the information in Part IX, Additional Tax on Excess Accumulation in Qualified Retirement Plans, line 52a and line 53b.
For your 2024 Form 5329 entries:
Click on Where do I Enter? at the top left corner of your ProSeries screen and type 5329
- Select Form 5329-T
- On Form 5329-T, scroll down to Line 52a and input the $_ that was their RMD
- On Line 53a, input zero (0) for the amount of the RMD they took
- Input the $_ in Box A found just below Line 53b
- Click Explain just below the $_
- Write: "Taxpayer mistakenly did not take the RMD for their inherited IRA. Upon discovering the error in 2026, they immediately withdrew the full 2024 RMD amount of $_. They have now set up an automatic withdrawal to ensure this does not happen again."
Note: Since they missed their RMD in 2025 as well, you will need to complete the above steps again while completing their 2025 tax return, including the explanation.
An amendment is generally not required to file Form 5329, since it is a stand alone form. However it is recommended to ensure that the IRS computer links the waiver to the correct tax year.