What state and have you looked to see if they have extended their payment date?  Also, pretty sure ProSeries hasn't updated most states yet.

Alabama still requires payment by 15 April even thought they extended the filing deadline until 17 May.  They will not charge a late payment penalty but they will charge interest if paid after 15 April.

I have the inverse situation. Client owes the federal government but has a state (NJ) refund. ProSeries won't allow me to efile the state tax return in advance of the federal return in hopes that the state refund will be received before the federal due date of 5/17/21. Any work arounds for this?

"ProSeries won't allow me to efile the state tax return in advance of the federal return in hopes that the state refund will be received before the federal due date of 5/17/21. Any work arounds for this?"

I like the info I find from efile.com:

"Thus, technically you cannot e-File anywhere - not just eFile.com - a New Jersey Tax Return without also e-filing the IRS Tax Return. However, see these detailed instructions on how you can only prepare and mail in - not eFile - a New Jersey 2020 Tax Return"

Thanks