I had the IRS change my 2016 1040 (MINE - not a client's) for the state tax that I deduct from my schedule C, but they didn't change that part.  I add a line to my Schedule A to add it back to income so that my Schedule A reflects only that which is personal.  The IRS took that line off of my Schedule A and then added a Miscellaneous Income line to my 1040 for that amount.  There is no net change to my federal return, but my state hit me with a bill. Even though I add that back into my state income since state tax isn't deductible on my state return.

How is this normally entered on the return and does Proseries Basic have a way to enter it?  I don't see anything on the tax payments schedule where I can adjust what is deducted on the Schedule A.

I'm concerned because I've done this for years and not just for myself - for several clients.  I haven't had any of them com back yet, but it's probably only a matter of time...  ???