Balloon Loan Schedule Calculator - Payment Planner & Balloon Payoff Tool

Calculator Inputs

Loan Amount

Annual Interest Rate (%)

Loan Term (Years)

Amortization Term (Years)

Payment Frequency

Payment Timing

Start Date

Recurring Extra Payment

One-Time Lump-Sum Extra

Lump-Sum Period Number

Tip: A shorter loan term with a longer amortization term usually creates a larger balloon amount.

Example Data Table

Field	Example Value	Why It Matters
Loan Amount	$250,000	Starting principal for the schedule.
Annual Interest Rate	7.20%	Sets the interest charged each payment period.
Loan Term	5 years	Defines when the balloon becomes due.
Amortization Term	30 years	Defines the regular payment size.
Payment Frequency	Monthly	Controls the number of payments each year.
Recurring Extra Payment	$100	Can reduce the remaining balloon balance.
Lump-Sum Extra	$5,000 at period 12	Applies a one-time principal reduction.

Formula Used

Regular payment formula
Payment = P × r ÷ (1 − (1 + r)⁻ⁿ)

Where
P = loan amount
r = periodic interest rate
n = total amortization periods

Balloon balance approach
Remaining balance is calculated period by period after each scheduled payment, extra payment, and interest charge. The ending balance at loan maturity becomes the balloon payment.

When the interest rate is zero, the calculator divides the loan amount evenly across the amortization periods.

Beginning-of-period payments reduce balance before interest accrues. End-of-period payments apply after interest accrues for that period.

How to Use This Calculator

Enter the original loan amount and annual interest rate.
Set the actual loan term, which is when the balloon is due.
Set the amortization term used to calculate regular payments.
Choose payment frequency and timing.
Add recurring or one-time extra payments if needed.
Click the calculate button to generate the schedule.
Review the summary cards, graph, and full table.
Use the export buttons to save the schedule as CSV or PDF.

Frequently Asked Questions

1) What is a balloon loan schedule?

A balloon loan schedule shows each payment, interest charge, principal reduction, and the final unpaid balance due at maturity. It helps you see how a shorter term and longer amortization create a large final payoff.

2) How is the balloon payment calculated?

The calculator first computes a regular payment from the amortization term. It then simulates every period until the actual loan maturity date. Whatever balance remains after the last scheduled payment becomes the balloon payment.

3) What happens if the amortization term equals the loan term?

In that case, the loan fully amortizes by maturity. The remaining balance should be zero or very close to zero, so no meaningful balloon payment remains.

4) Can extra payments reduce the balloon amount?

Yes. Recurring and one-time extra payments directly reduce principal. Lower principal means less future interest and a smaller balance left when the balloon becomes due.

5) Does payment frequency change the result?

Yes. Frequency changes the number of payment periods and the periodic interest rate. Monthly, quarterly, biweekly, and weekly schedules can produce different payment sizes and different remaining balloon balances.

6) How does the calculator handle zero interest?

With zero interest, the regular payment is simply the loan amount divided by amortization periods. The balloon then depends only on how much principal remains unpaid at maturity.

7) Why include beginning-of-period payments?

Some agreements collect payments at the start of each period. That lowers average outstanding balance sooner, which changes interest and can reduce the final balloon.

8) Can I export the results?

Yes. Use the CSV button for spreadsheet work and the PDF button for sharing or printing a clean copy of the schedule and summary values.