What is a balloon mortgage?

A balloon mortgage has lower monthly payments based on a long amortization period (e.g., 30 years) but requires the full remaining balance to be paid in a lump sum at a specified date — typically 5, 7, or 10 years. The monthly payments are the same as a 30-year loan, but the 'balloon' payment at the due date can be $250,000 or more.

How large is a typical balloon payment?

On a $350,000 mortgage at 6.25%, the balloon payment after 7 years is approximately $314,000 — nearly the full original loan amount. That's because early mortgage payments are mostly interest, leaving the principal largely intact.

What happens if I can't pay the balloon payment?

If you can't pay the balloon, you face foreclosure or must quickly refinance. This is the major risk of balloon mortgages. If rates rise significantly or your credit worsens, refinancing may be difficult or expensive. Many borrowers with balloon mortgages got into serious trouble during the 2008 financial crisis.

Why would anyone choose a balloon mortgage?

Balloon mortgages may offer slightly lower rates than 30-year loans and make sense for: investors who will sell before the balloon date, buyers who expect significantly higher income by balloon date, or those expecting a large windfall (inheritance, business sale). They're risky for primary residences unless you have a clear exit plan.

What are alternatives to a balloon mortgage?

Better alternatives for most buyers: 30-year fixed (predictable), 15-year fixed (pay off faster), ARM mortgage (lower initial rate, adjusts later), or interest-only loan (lower payments, then full amortization). All of these avoid the sudden lump-sum requirement of a balloon mortgage.

Balloon Mortgage Calculator

Calculate your monthly payment and the balloon lump sum due at the end of the balloon period. See how much principal remains and total interest paid before the balloon date.

Loan Amount

Interest Rate

Amortization Period

Balloon Due Date

Monthly Payment

$2,155

Based on 30-year amortization · Balloon due at year 7

Principal Paid (before balloon): $34,882

Interest Paid (before balloon): $146,138

Balloon Balance Due: $315,118

Balloon Payment Due

$315,118

Balloon as % of Original

90.0%

Interest Before Balloon

$146,138

Principal Paid Before Balloon

$34,882

Total Payments Made

$181,021

Total (Payments + Balloon)

$496,138

Comparison: Standard 30-Year Fixed Mortgage

Full 30-Year Total Interest

$425,804

Balloon Interest (to year 7)

$146,138

Interest Saved (if sell/refi)

$279,665

Monthly Payment

$2,155 (same)

A balloon mortgage makes financial sense only if you plan to sell or refinance before the balloon payment comes due. Failure to do so requires paying the full balloon amount — often hundreds of thousands of dollars.

How to Use This Balloon Mortgage Calculator

Enter your loan amount, interest rate, amortization period, and balloon due date to see your monthly payment and the balloon lump sum you'll owe.

Amortization Period vs. Balloon Due Date

These are two separate timeframes. The amortization period (30 years) determines your monthly payment size. The balloon due date (e.g., 7 years) is when the full remaining balance must be paid. You make 30-year-sized payments for 7 years, then pay whatever balance remains in one lump sum.

Why the Balloon Is So Large

In the early years of a mortgage, nearly all of each payment goes to interest — very little reduces the principal. After 7 years of a 30-year loan, you've only paid off about 10% of the original balance. That's why the balloon payment is so large — roughly 90% of the original loan remains.

Balloon Mortgage Formula

Monthly Payment = P × [r(1+r)^n] / [(1+r)^n - 1]
Where n = full amortization period (e.g., 30 × 12 = 360 months)

Balloon Balance = Remaining balance after balloon period months
Calculated via amortization schedule at month = balloon years × 12

Balance at Month m = P × [(1+r)^n - (1+r)^m] / [(1+r)^n - 1]

Total Paid = (Monthly Payment × Balloon Months) + Balloon Balance

Example: $350,000 at 6.25%, 30-year amort, 7-year balloon. Monthly payment = $2,155. After 84 payments, remaining balance = ~$314,000. Total paid in 7 years = $181,020 in payments + $314,000 balloon = $495,020.

Example: Commercial Investor Uses Balloon Mortgage

A Real Estate Investor's 7-Year Balloon Plan

A buy-and-hold investor purchases a rental property for $425,000 with a 7-year balloon, planning to sell at year 5 when the neighborhood is expected to gentrify.

Loan Amount	$350,000
Interest Rate	6.25% (30-year amortization)
Monthly Payment	$2,155
Balloon Due	Year 7
Balloon Balance at Year 7	~$314,000
Interest Paid in 7 Years	~$163,000
Principal Paid in 7 Years	~$37,000
Plan: Sell at Year 5	Home projected value: $550,000
Estimated Equity at Sale	~$190,000

The investor sells at year 5 before the balloon is due, pocketing ~$190,000 in equity after paying off the balloon balance. The balloon mortgage worked because they had a clear exit strategy and stuck to it.

Frequently Asked Questions

A balloon mortgage is a loan with regular monthly payments calculated on a long amortization period (usually 30 years), but the full remaining balance becomes due on a specified "balloon date" — typically 5, 7, or 10 years. Unlike a 30-year fixed where you make 360 payments and the loan is done, a balloon loan requires a massive lump-sum payoff at the balloon date, usually $250,000–$350,000 or more on a typical home purchase.

Typically 85–95% of the original loan amount, depending on the term. On a $350,000 30-year balloon with a 7-year due date: the balloon payment is approximately $314,000. On a 5-year balloon, it would be about $325,000. The reason it's so large: in early years, mortgage payments are almost entirely interest — very little goes to principal reduction.

You have limited options: (1) Refinance before the due date — requires good credit and sufficient equity; (2) Sell the home and use proceeds to pay the balloon; (3) Negotiate with the lender for an extension — some lenders allow this; (4) Default and face foreclosure. The 2008 financial crisis was partly caused by balloon and hybrid loans coming due when refinancing was impossible. Always have a clear exit strategy before taking a balloon mortgage.

Sometimes — by 0.125–0.375% compared to a 30-year fixed. The lender takes less long-term interest rate risk since the loan resets sooner. However, the rate advantage is often small and may not justify the balloon risk. In current markets, 5-year ARMs and 10-year ARMs often offer similar or better rate advantages without the hard balloon requirement.

Balloon mortgages for primary residences are much less common after the 2008 crisis. They're more prevalent in commercial real estate where 5–10 year balloons are standard, and in seller financing situations. For residential buyers, ARMs have largely replaced balloon mortgages as the "lower initial rate" option. Balloon mortgages may be offered by portfolio lenders and credit unions that hold their own loans.