When summing the state tax total that can be itemized, what are the addends? Paid on W2+Estimated payments for 2025 + Paid in 2025 for 2024 (estimated and balance due)??

[MindyB]

That's correct, to calculate your state income tax deduction for 2025, you sum all payments actually made during the calendar year, which includes your 2025 W-2 withholding, any quarterly estimated payments made during 2025, and any balance paid in 2025 for your 2024 return.