Do you have any issues when trying these steps? 

https://accountants.intuit.com/support/en-us/help-article/corporation/common-questions-corporate-net...

@Intuit_Ruben 

The question is 'why' Lacerte can't do the actual math of limiting the NOL deduction to 80% of income. 

It is a similar computation of the SEHI deduction; when there are income amounts that are partially taxable based on income (example = SS benefits) the computation becomes 'circular'.  

Lacerte IS able to do it for SEHI, altho a diagnostic is generated.

It seems Lacerte, for what it costs, could do the programing for the NOL/80% calculation also....

Great mind reading Anna.

I understood, sort of, why the software didn't apply the limitation the first year it existed. But after all these years I don't understand.

Thanks Susan...

I was just working on one with the issue so it was fresh in my mind. 

I understand the 'math' issue, but if it can be done for SEHI why not for NOLs with the same diagnostic to verify.