I am getting a $229 refund. When I apply it to my 2019 estimated vouchers it does not change the amount. Why?

[fanfare · Accepted solution]

you can apply your refund to your final tax bill in 2019

meanwhile estimated tax payments are a separate item.

[chetrucinski]

Thank.,It seems that is the way it works.  However on my state taxes it reduce the amount of the vouchers.