Thanks for your response Just-Lisa-Now.  

Regarding the application of the payment.  I was getting an error message when trying to increase the  PPR balance for a 2021 S Corp return - not sending the extension although that was the end game.  I read in this community one way to resolve the issue was pay the fee online in "My Account".  So that is what I did.

The client is on a fiscal year 2021-2022.  I'm using the 2021 program, To that end you do raise a good point because I'm not sure when making a payment through my account if the payment defaulted automatically to the current year (was December 2022).   I see the charge on my cc but can't find within my account how to check the balance - in 2021 Proseries the account balance is showing as $0.

This is a 7004 S Corp fiscal year 2021 extension.