A balloon loan is amortized like a normal loan — but the term you actually owe it by is much shorter than the schedule it was calculated on. Everything the long schedule hasn’t paid off yet comes due at once.
How it works
The regular payment is calculated exactly like a standard fixed-rate loan, spread over the full amortization term (commonly 30 years). But the loan’s actual due date — the balloon term — is much sooner, often 5 or 7 years in. This calculator runs the same amortization schedule the regular payment implies, stops at the balloon date, and reports whatever principal is still outstanding at that point. That remaining balance is the balloon payment.
Why the balloon is often surprisingly large
Early payments on any amortizing loan are mostly interest — a $300,000 loan at 6% over 30 years pays down only about $34,600 of principal in the first seven years, even though the borrower has made 84 payments by then. The CFPB’s own guidance puts it plainly: a balloon payment is “generally more than two times the loan’s average monthly payment,” and can be a large share of the original loan amount. The lower regular payment is the entire appeal of a balloon structure, and the size of what’s left over is the entire risk of it.
What this does not include
This assumes the interest rate is fixed for the life of the loan up to the balloon date, which is true of a standard fixed-rate balloon but not of every product sold this way. It also doesn’t model what happens at the balloon date itself — refinancing, selling, or paying it off in cash are all real options with different costs this calculator doesn’t compare. And per the CFPB source above, balloon payments are barred from “Qualified Mortgage” loans except in limited cases, which this calculator does not check for.
How to use this calculator
- Enter the loan amount and interest rate.
- Enter the amortization term the payment is calculated over (often 30 years, even though the loan isn’t actually outstanding that long).
- Enter the balloon term — how many years until the full balance is actually due.
Frequently asked questions
Why would anyone take a loan with a balloon payment?
The regular payment is lower than a fully amortizing loan over the same short term would require, which can make sense for a borrower who plans to sell, refinance, or otherwise have a large sum available well before the balloon comes due.
What happens if I can’t pay the balloon?
The options are typically refinancing into a new loan, selling the underlying asset, or a lender workout — none of which are guaranteed to be available on favorable terms when the balloon actually arrives, which is the core risk this structure carries.
Is a balloon loan the same as an interest-only loan?
No. An interest-only loan makes no principal progress at all until a set point, so its full balance is due unchanged. A balloon loan does amortize — just on a longer schedule than the time it’s actually allowed to run, so only part of the principal is left when it comes due.
Can the balloon term equal the amortization term?
Yes — set them equal and the loan simply pays itself off like a standard loan, with a balloon of roughly zero. The calculator handles that case directly rather than treating it as a special one.
