Thanks. I used the term investment because it's the name of the smart worksheet where other types of income are listed and the total is referred to as total investment income to which the $11,000 limitation is applied. This is a separate worksheet inside the EIC worksheet. 

I would think the earned income from the K-1 would be shown on the worksheet as partnership income, which would result in the total exceeding the limitation so they would not qualify for the EIC. The only input box is for adjustments. The other fields for different types of income are automatically calculated with the exception of a couple.