Hi HelenC12, What is combined both mortgages exceed the $750,000. By filling in both boxes its doubling counting the mortgages and might prevent you from taking the full interest deduction. If you had a mortgage for $500k and then sold the house secured by the mortgage and bought another house with another $500k mortgage you just essentially transferred the mortgage from one property to another. But by filling out Box 2 twice the software thinks you had $1M in mortgages which is overstating what happens.
