1. Prior year issue:
The software is applying a "validation rule" based on your mom’s current filing status (Single) to her prior years' data.
The Logic Error: For 2024, the maximum credit fo...
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1. Prior year issue:
The software is applying a "validation rule" based on your mom’s current filing status (Single) to her prior years' data.
The Logic Error: For 2024, the maximum credit for a Single filer was $470 (Form 321) and $731 (Form 323). Because your mom is now filing as Single, TT’s error-checker is looking at her 2022–2024 entries and saying, "Wait, you can't have a credit of $938 or $1,459 because that's over the Single limit!"
The Reality: Those credits were perfectly legal because they were generated on a Joint return. Arizona law generally allows a surviving spouse to retain their portion (and often the full amount in community property states like AZ) of a carryover credit, but the software's "Review" phase isn't sophisticated enough to realize the status changed after the credits were earned.
2. Carryover $605
Yes. Your mom did not lose the carryover just because your dad passed away. Under Arizona's community property laws, credits earned during the marriage belong to the "community." Since she is the surviving member of that community, she is entitled to utilize the carryover on her single return until it is exhausted (within the 5-year carryover window).
3. Going through the Interview
Open to Arizona State
find the Credit Carryover screens for Forms 321 and 323.
For the years with no carryover remaining (2022 and 2023), simply delete the data or enter $0. Since the credit was fully used in those years, it doesn't actually need to be reported on the 2025 return. Arizona only requires you to list prior years if there is an available carryover from them.
For 2024, since you have a $605 carryover, TT is forcing the "Original Credit" box to be under the Single limit. Try entering the "Original Credit" as $731 (the 2024 single max) and then adjust the "Amount Previously Used" so that the "Available Carryover" still equals exactly $605.
Example: If the goal is a $605 carryover, enter: Original $731, Used $126. This results in the same $605 carryover but "tricks" the software into passing the error check.