Thank you for providing your diagnostic file and token number.
I was able to take a look at your file and I understand why it appears that the state estimated payment made in 2025 for 2024 is being reduced. It appears to be reduced on Schedule A because it actually is reduced because you received a refund for your 2024 state taxes.
Since a portion of your total tax payments and withholdings to the state for your 2024 return was actually paid in 2025, a portion of the tax refund you received must be allocated to 2025 as well. Then, that allocated amount of your refund is used to adjust the payment that was made in 2025. Without making this adjustment, it would be possible for a taxpayer to artificially inflate their deductions for the current tax year by overpaying their 4th quarter estimated payment in January.
In your case, the amount of your state refund for 2024 divided by your total tax payments and withholdings did come out to be about 17.6%. Therefore, the estimated payment made in 2025 was reduced by that same percentage before it was included on Schedule A as part of your itemized deductions.
The State and Local Income Tax Worksheet (St Refund Wks) included as part of your return shows the numbers involved in the calculation. You can print this form by choosing it specifically in the Print Menu option after your TurboTax Online fee has been paid.
@Frustrated_in_California
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