Yeah, it's critical to enter your exact payment dates, and do not just let the default deadline dates remain.
IF a payment for "state" 2023 estimated taxes, is actually paid during January of 2024, then it does get "credited" for 2023 in the state tax return....but for the Federal "deduction" for state taxes paid, the state January payment isn't allowed as a Federal income deduction until 2024 taxes are prepared.
Thus, some of us always make our final Q4 state estimated payment during December......though deciding which month to use can depend on each one's personal tax situation.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
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