A client owes the IRS after filing their initial return. They filed February 14 before the unemployment change. When initially filing they were not able to claim their child but now they are able to. So I need to file an amendment to add a dependent my client didn't initially claim. This client also has unemployment that wasn't excluded on the initial return.

The IRS most recently said "As noted within the guidance, if a 2020 Form 1040 or 1040-SR return has already been filed, there is no need to file an amended return to figure the amount of unemployment compensation to exclude. The IRS will refigure the taxes using the excluded unemployment compensation amount and adjust the tax account accordingly. The IRS will send any refund amount directly to the taxpayer."

So I don't know if I should amend to add the dependent or not? The client owes and it's possible the IRS won't adjust their tax account until after taxes are due. If I amend to add the dependent, I might as well add the exclusion to?