This tool figures a loan's monthly and balloon payments, based on the amount borrowed, the loan term and the annual interest rate. This calculator computes the payment amount necessary for a mortgage with a balloon payment, using monthly interest compounding and monthly payments.An amortization schedule is a table that shows how much principal and how much interest the periodic loan payments go toward paying off. The amortization period on a balloon payment mortgage is worked out the same way as a regular fixedterm, fixedrate mortgage. Balloon loans typically have either 5 or 7-year terms. A balloon loan is usually rather short, with a term of three to five years, but the payment is based on a term of up to 15 years. This is an unofficial version of Commonwealth regulations and is posted here for the convenience of the public. Buy down or pledged account mortgages are used to mitigate very high interest rates that make loan payments unaffordable.