When adding liens attached to property, you'll be asked if the lien is a mortgage. 

Selecting "yes", tells NextChapter that you would like the claim to be added into the Chapter 13 Plan Calculator as a long-term debt that will not be paid in full prior to the end of Chapter 13 Plan. The claim will be categorized as "Secured R/E" in the Calculator Asset Table.

If there is a lien attached to real property that will be paid in full during the plan, such as a tax lien, you can indicate in when adding the lien that it is not a mortgage. Then the claim will be added as a Secured Asset in the Asset Table and the full balance will be added into Chapter 13 Calculator.