The limitation on state and local taxes paid for 2025 is $40,000 in total. Ex:
The total amount of deductible state and local taxes is added together before the SALT cap is applied. So, for instance, if you paid $25,000 in state income taxes, $21,000 in real estate taxes, and $14,000 in personal property taxes in 2025 (for a total of $60,000), you still can only deduct $40,000 (the SALT deduction cap for 2025) even though each separate type of tax was less than $40,000.
If you're a high income earner, your state and local tax deduction may be subject to a limit, and phased out (Separate - 250k modified AGI; Joint - 500k modified AGI).
See: SALT Deduction Explained: Limits, Eligibility, and Tax Planning Tips
Can you share which line between 5a and 7 on your Schedule A is incorrect? That will help better identify the issue for troubleshooting.
Apologies, I just checked your post history and realized you are dealing with too much tax being deducted on your Schedule A, not the usual question. It sounds like you may have a duplicate W-2 being reported in the software; if some of your state tax payment came from W-2 withholdings, you should check out this FAQ for duplicate W-2s.
Again, if you can share more detail about what your Lines 5a through 7 consist of, that will help determine where the software is picking up too much tax payment.
[Edited 04/04/26|4:21pm PST] @dwk20
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