How the Balloon Payment Calculator Works (With a Worked Example)
Compares repayments with and without a balloon payment. This guide walks through what each input means, the formula behind the answer and a worked example using typical Australian figures. You can follow along in the free Balloon Payment Calculator.
Why it matters
Personal credit in Australia covers car loans, personal loans, credit cards and buy now pay later. Lenders must quote a comparison rate alongside the headline rate, which bundles most fees into a single figure for a standard loan size.
What you need to enter
The calculator asks for 4 inputs. The table shows each one with the example value used later in this guide.
| Input | Example value |
|---|---|
| Amount financed ($) | 50000 |
| Balloon (%) | 30 |
| Interest rate (%) | 8 |
| Loan term (years) | 5 |
The formula
Repayments are calculated with the balloon left owing at the end, then compared with a fully amortised loan.
Worked example
Entering the example values above gives these results:
| Result | Value |
|---|---|
| Monthly with balloon | $809.67 |
| Balloon amount | $15,000.00 |
| Monthly without balloon | $1,013.82 |
| Extra interest from balloon | $2,751.25 |
The headline figure is $809.67 (monthly with balloon). Change any input in the calculator and every result updates instantly, so you can test different scenarios side by side.
How the monthly with balloon changes with amount financed
The table below keeps every other input at the example value and moves only “Amount financed ($)” up and down by 10% and 20%. It shows how sensitive the monthly with balloon is to that one figure.
| Amount financed ($) | Monthly with balloon |
|---|---|
| 40,000 | $647.74 |
| 45,000 | $728.71 |
| 50,000 | $809.67 |
| 55,000 | $890.64 |
| 60,000 | $971.61 |
At 40,000 the result is $647.74; at 60,000 it is $971.61. If a small change in this input moves the answer a lot, it is worth double-checking that figure before you rely on the result.
A practical tip
Plan how you will pay the balloon. Refinancing it adds more interest.
Keep going
Before relying on the number, read Getting the Most From a Balloon Payment Calculator: Tips and Common Errors. You might also find these guides useful:
- Debt-to-Income Ratio Calculator: Formula, Example and What the Result Means
- How the Car Loan Calculator Works (With a Worked Example)
- Personal Loan Calculator: Formula, Example and What the Result Means
Frequently asked questions
- What is a comparison rate?
- It combines the interest rate and most fees into one annual rate, usually based on a $30,000 loan over five years, to make loans easier to compare.
- Do the results include fees?
- Only where a fee input is shown. Add any known fees for a more realistic total.
- Where can I get help with debt?
- The National Debt Helpline (1800 007 007) offers free, confidential financial counselling.
Run your own numbers in the Balloon Payment Calculator.
Open the calculatorGeneral information only. Rates and thresholds change, usually on 1 July. Confirm current figures with the ATO or the relevant authority, and get personal advice for decisions about your situation.