I submitted a claim for under the 100% Accurate Calculation Guarantee. I'm waiting for TurboTax to research and determine if there was in fact a calculation error (which I highly suspect, especially if you and others may have been impacted by the same thing).
If there was a calculation error, they will reimburse for the penalties/interest. The tax is still due, which is fine and makes sense. If we under reported in error, we're on the hook for that. But we should not be assessed the interest, as it never would have been charged had the initial calculation been correct.
You can find info here about how to submit a claim: https://ttlc.intuit.com/community/charges-and-fees/help/how-do-i-submit-a-claim-under-the-turbotax-1...
