What screen are you seeing that in?
Lacerte does the math automatically if all insurance & W-2 info is linked correctly.
If a post answers your question, click on *Accept as solution* for future searches
Indiv Return, Screen 20 'S Corp', Line 17 'Other Info', SE Health Insur Premiums $6000, check mark next to 'Reduce QBI by SE health Insurance', nothing happens - (on my QBI business income calculation it does not reduce by $6000 for SE Health Insurance)
On my 2018 Lacerte it DOES reduce qbi by health Insurance, by following above steps
On my 2019 Lacerte it does NOT reduce