The bottom line on this particular calculation is that I figured the taxable amount of SS using the IRS instructions and the proseries basic software and correctly ( I assume) calculated taxable SS, using the full amount of UC received before any exclusion.

The IRS corrected the returns and calculated the taxable amount of SS using the net amount of UC if any after the allowed exclusion.

I have checked and rechecked the returns. I will wait for the clients to notify me that the correction has been corrected or the IRS may ignore it and plow ahead manually reviewing the 17 million returns they have in the queue.

Thanks for all the input on the issue!