Convertible Balloon Mortgage Calculator

5/25 and 7/23 convertible balloon mortgages are growing in popularity since they provide lower rates than conventional 30 year mortgages while still giving a fixed payment schedule for 5 or more years. The risk, of course, is what happens after the initial fixed period is over and you have the possibility of converting your loan. This calculator is designed to try to answer those questions.

Calculation Data
Principal Balance
Type of Loan	3 yr balloon 5/25 6/24 7/23 8/22 9/21 10/20
Initial Interest	%
Monthly Pre-payment during initial fixed period