Balloon Loan Calculator

Understand the lump sum due at maturity with MiniWebtool’s Balloon Loan Calculator. Loan amount, rate, balloon term, and amortization or interest-only choice determine regular payments and the remaining balance, with a fully amortized comparison.

Need help using this tool? Ask AI

Gemini (copy & open)

For Gemini, paste the copied question into the chat. You can also copy it below.

View the question

Help me understand MiniWebtool's Balloon Loan Calculator: https://miniwebtool.com/balloon-loan-calculator/. What can I use it for, what inputs or settings do I need, and how do I use it and understand the output? Walk me through one simple example. Use this page as your source and answer in English.

3 free uses dailyNo sign-up requiredInstant Results

Balloon Loan CalculatorTry it now — free ▼

Quick examples — click to fill the form, then press Calculate:

Currency

Payment Type

Loan Amount

Annual Interest Rate

% / yr

Balloon Due After

years

When the remaining balance becomes due as a lump sum.

Amortization Term

years

The schedule the monthly payment is based on (usually longer than the balloon term).

Embed Balloon Loan Calculator Widget

About Balloon Loan Calculator

The Balloon Loan Calculator works out the two payments that define a balloon loan: the relatively low monthly payment you make during the term, and the large final balloon payment that repays the remaining balance at maturity. It also shows a visual payment timeline, compares the loan against a fully amortized loan over the same term, and breaks down how much principal you actually pay off before the balloon comes due.

At a Glance

Balloon Loan Calculator works out the regular payment and the lump sum due at maturity on a balloon loan. Loan amount, rate, balloon term and an amortized or interest-only structure determine the result.

Balloon Loan Calculator: features at a glance
Feature	What you get	Good for
Two structures	Choose amortized (principal and interest) or interest-only. An interest-only balloon equals the full original principal.	Comparing how each structure changes the final payment
Loan inputs	Enter the loan amount, annual interest rate and balloon term, plus an amortization term (often 30 years) for amortized loans. A currency can be chosen.	Modeling a commercial, business or property loan
Monthly payment	For amortized loans the payment is sized on the full amortization schedule: M = P x r(1+r)^n / ((1+r)^n - 1).	Seeing the low payment during the term
Balloon payment	The balloon is the balance still owed after the balloon term. $250,000 at 6.5%, amortized over 30 years with a 7-year balloon, gives about $1,580 a month and a balloon near $226,000.	Knowing what falls due at maturity
Fully amortized comparison	A side-by-side view compares the balloon loan with a fully amortized loan over the same term.	Weighing lower payments against the end-of-term sum
Breakdown and timeline	A payment timeline, principal paid versus principal left as the balloon, and a step-by-step formula walkthrough with total interest and total cost.	Understanding where the money goes

What is a Balloon Loan?

A balloon loan is a loan whose monthly payments do not fully repay the debt over the loan term. Instead, the borrower makes small regular payments — based on a long amortization schedule, or covering only the interest — and then owes one large lump sum, the balloon payment, when the term ends. Balloon loans are common in commercial real estate, business financing, and some auto and mortgage products, where they offer low payments to borrowers who plan to sell, refinance, or repay early.

Balloon Loan Formula

An amortized balloon loan uses two steps. First, the monthly payment is calculated as if the loan amortized over the full amortization term. Then the balloon payment is the balance still outstanding after the shorter balloon term.

Step 1 — Monthly Payment

$$M = P \times \frac{r(1+r)^{n}}{(1+r)^{n}-1}$$

Step 2 — Balloon Payment (Remaining Balance)

$$B = P(1+r)^{k} - M \times \frac{(1+r)^{k}-1}{r}$$

Here P is the loan amount, r is the monthly interest rate (annual rate ÷ 12), n is the number of months in the amortization schedule, and k is the number of months in the balloon term. For an interest-only balloon loan, the monthly payment is simply $ P \times r $ and the balloon payment equals the full original principal P.

Worked Example

Suppose you borrow $250,000 at 6.5% interest, amortized over 30 years but with the balloon due after 7 years:

The monthly payment is calculated on the full 30-year (360-month) schedule, giving roughly $1,580 per month.
After 7 years (84 payments), most of the principal is still outstanding, so the balloon payment is about $226,000.
You paid low monthly payments for 7 years, but you still owe the vast majority of what you borrowed.

Balloon Loan vs. Traditional Loan

Balloon Loan Calculator: Balloon Loan vs. Traditional Loan
Feature	Balloon Loan	Traditional Loan
Monthly payment	Lower	Higher
Principal repaid during term	Little or none	Fully repaid
Final payment	Large balloon lump sum	Normal last payment
End-of-term risk	High — must refinance, sell, or pay in full	Low — loan is paid off
Best for	Short holding period, expected refinance or sale	Long-term ownership, payment certainty

Pros and Cons of Balloon Loans

✅ Lower Monthly Payments

Because little or no principal is repaid, monthly payments are far lower than a fully amortizing loan over the same term.

💵 More Short-Term Cash Flow

The freed-up cash can be invested in a business or property, which is why balloon loans are popular in commercial finance.

⚠️ Balloon Payment Risk

A large sum falls due all at once. If you cannot pay, refinance, or sell, you risk default.

📈 Refinancing Uncertainty

If rates rise or your credit weakens, refinancing the balloon may be expensive or unavailable.

How to Use This Calculator

Enter the loan details: Type in the loan amount and the annual interest rate, and choose your currency.
Choose the structure: Pick Amortized (principal & interest) or Interest-Only, set the balloon term, and for amortized loans set the amortization term (often 30 years).
Click Calculate: The tool computes the monthly payment and the final balloon payment instantly.
Review your results: See the payment timeline, the comparison against a fully amortized loan, how much principal is left as the balloon, and the step-by-step math.

Frequently Asked Questions

What is a balloon loan?

A balloon loan is a loan with small regular payments for a set term followed by one large final payment, called the balloon payment, that repays the remaining balance. The monthly payments are usually based on a long amortization schedule, or cover interest only, which keeps them low while leaving a big lump sum due at maturity.

How is a balloon payment calculated?

For an amortized balloon loan, the monthly payment is calculated as if the loan amortized over the full amortization term. The balloon payment is the remaining balance after the shorter balloon term: B = P(1+r)^k − M × ((1+r)^k − 1) / r, where P is the principal, r is the monthly rate, M is the monthly payment, and k is the number of payments made. For an interest-only loan, the balloon payment equals the full original principal.

Why are balloon loan monthly payments lower?

The monthly payment is sized using a long amortization period, or it only covers interest, so very little or no principal is repaid each month. This makes the monthly payment much lower than a normal loan repaid over the same short term, but it leaves most of the principal to be paid all at once as the balloon.

What happens at the end of a balloon loan?

When the balloon term ends, the entire remaining balance is due in a single payment. Borrowers typically pay it in cash, refinance into a new loan, or sell the asset to cover it. If none of these are possible, the borrower can default, so a clear plan for the balloon payment is essential before taking the loan.

What is the difference between an amortized and an interest-only balloon loan?

An amortized balloon loan repays a small amount of principal with each monthly payment, so the balloon is somewhat smaller than the original loan. An interest-only balloon loan pays only interest each month, so the balloon payment equals the full original principal. Interest-only loans have the lowest monthly payment but the largest balloon.

Are balloon loans a good idea?

Balloon loans can suit borrowers who expect to sell, refinance, or come into money before the balloon is due, or who want lower payments in the short term. They carry real risk: if you cannot make the balloon payment you may have to refinance at a higher rate or default. They are best used with a concrete exit plan.

Additional Resources

Balloon Payment Mortgage - Wikipedia

Reference this content, page, or tool as:

"Balloon Loan Calculator" at https://MiniWebtool.com/balloon-loan-calculator/ from MiniWebtool, https://MiniWebtool.com/

by miniwebtool team. Updated: June 24, 2026

Developer API available: Run this tool from your app, automation, or agent with one JSON HTTP request. View API docs

Chat with your favorite AI