I have a 1040 client that went on extension with preliminary numbers from a partnership. They had an overpayment of $40K that we were rolling over to 2022 Q1. We reduced that Q1 payment, accordingly.
During the extension period, the partnership made an ERC claim. The K-1 now shows much more income than originally estimated. Their $40K overpayment is now a $10K balance due. They owe for 2021 and are underpaid for 2022.
Does the ERC penalty relief apply to both of these? Or does it only apply when there is a balance due on an amended tax return?