WRT to your question about whether I would use the state income deduction or sales tax deduction, TurboTax says the sales tax deduction is better, I assume since I bought an expensive appliance. Per your suggestions, I closed TurboTax online version, cleared cache, relauched and went through the sales tax interview again, this time entering the dates you suggested - 1/2/24-12/31/24 for each of the two different tax rates I paid. Same result: The total deduction is back to where it should be, but Smart Check is still reporting the 366 days error.
