There *is* a carryover of unused SALT?

It's not a 2020 item carrying over to 2021. It's tax due with the return, which Lacerte assumes will be paid in 2021.

Ah... we're talking about the amount that'll proforma over to screen 25 as 'potentially' deductible.  

Sigh, it's been a long day already 🙂

My client's carryover amount contains no state income tax. Why would there be an assumption that such an amount would be paid in the following year?