Federal tax calculation ERROR (2025 TurboTax Desktop)?

Forum|Forum|1 month ago
May 11, 2026
3 replies
299 views

I just received an IRS CP-11 notice from the IRS for my 2025 federal income tax return, which I prepared using TurboTax desktop. The notice claims that I underpaid my tax due, which was calculated by TurboTax, because I understated my taxable income by $1,600. When I looked into this further, I discovered that TurboTax calculated my standard deduction amount, as someone who is filing as Married Filing Separately and is over 65, is $18,950. But it turns out that calculation is wrong. My standard deduction amount is $15,750 plus $1,600 (for over 65), for a total of $17,350. This TurboTax calculation error caused me to understate my income on my return by $1,600. Now it's possible I have misunderstood what had happened here, so I would appreciate any help with this. But if my calculation is correct, what recourse do I have with Intuit for causing this error?

DoninGA

Level 15

What is actually shown on your federal tax return, Form 1040 Line 12e?

sircarlphilAuthor

Level 2

18,950

VolvoGirl

Level 15

Could you have also checked BLIND? You get another 1,600 if you are blind.

sircarlphilAuthor

Level 2

No, I didn't.

Mike9241

Level 15

If it is a TurboTax calculation error, it will pay any penalties and interest. You are still responsible for the additional taxes

to file a claim

https://ttlc.intuit.com/turbotax-support/en-us/help-article/intuit-account-billing/submit-claim-turbotax-100-accurate-calculation-100/L88SYklBL_US_en_US

Mike9241

sircarlphilAuthor

Level 2

Thanks Mike9241. I haven't (yet) been charged any penalties and/or interest. But I would hope someone at Intuit might acknowledge to me that their app caused this to happen. And if it happened to me, presumably it happened to every TurboTax desktop user who filed as Married Filing Separate and took the standard deduction. This is a simple calculation error. I'm frankly mystified how it could have happened.