Did you send it in Dec 2021 hoping to get a 2021 deduction for it? Did you have a 2022 estimate form for it? Hope they applied it to the right year and not as a 2021 payment. Or do you really mean a 2021 estimated payment that was due Jan 15, 2022? Did you also pay a 4th Qtr estimated for 2021?
I pay my 4th quarter state estimate in Dec to get a current year deduction for it too.
