The answer from the employee tax expert is incorrect. If you look at the instructions for the forms provided by the Idaho State Tax Commission at https://tax.idaho.gov/wp-content/uploads/forms/EFO00089/EFO00089_10-02-2025.pdf , the formula for Idaho Form 43/Line 34 and the formula for Idaho Form 40/Line 14 both take into account the updated SALT limits. Specifically, if the filer is married and Line 5d of Federal Schedule A is great than $10,000, the Idaho form instructions give the following formula (using data from Federal Schedule A):
Line 5e - Line 5c - Line 5b
Instead TurboTax is clearly using the formula:
$10,000 - Line 5c - Line 5b
I called TurboTax yesterday and am awaiting an answer with the results of their research.
