Fannie Mae Balloon Endorsement Mortgage (12-1-08). A balloon payment is a large one-time amount due at the end of a loan.Mortgages, auto loans, and business loans have been structured for balloon payments. ____ Your loan has a balloon payment. 2. A balloon mortgage comes with an unusual twist. Two lines down is the "Balloon Payment" option. You want this to say "No" unless you have a plan to pay the loan off before the balloon hits. Clients interested in lending money to financially assist a family member should consider making an intrafamily loan. Here, we outline basic information. Etal, Zenith Management I, Llc.