It seems 2024 Turbotax should support e-filing amended returns according to this Intuit TurboTax Article @ https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/e-file-1040x-amend-return/L9t...
Can I e-file my federal Form 1040-X amended return?
by TurboTax • 5758
Updated January 14, 2026 9:34 AM
Generally, you can e-file your amended 2025, 2024, or 2023 federal return via TurboTax if your original return was also e-filed in TurboTax...
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2024 Turbotax Windows desktop application does allow e-file of an amended 2024 tax return. Selecting continue on the E-Filing is closed for the season page allows the sending of e-filed returns.
However, the return is rejected by the IRS after transmittal with "IND-689-01 - The year of the 'PrimarySignatureDt' in the Return Header must be equal to the processing year."
I'm not sure why, but 2024 Turbotax requires the use of a signature date of 01/01/2025 through 12/31/2025 on the Correct Your Signature Date page.
I strongly suspect that is what is causing the rejection of the amended 2024 tax return being e-filed in 2026.
I attempted to report this as a coding error since the article referenced above and posted by Turbotas this year indicates it is supported.
Intuit Turbotax support indicated that it is not supported and that mailing is the only way to file an amended 2024 return. I asked repeatedly how I could identify a possible coding error. They suggested the Intuit community.
It may be poor training of the support team. It may be intentional to limit e-filing to a single year. Either way it is a shame that it does not work!
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