Compound Interest Calculator Australia
Estimate how a starting balance and regular monthly contributions could grow through compound returns over time.
All amounts are in Australian dollars (AUD).
Adjust your plan
Move the sliders or enter exact amounts.
Your estimate
Updates instantly as your numbers change.
Estimated future balance
$94,111
After 10 years at the entered return.
Estimated growth
$24,111
$70,000 comes from your balance and contributions.
How this calculator works
Compound growth means returns can earn further returns. This calculator separates your starting balance, contributions, and estimated growth so the result is easy to understand.
Important assumptions
- Returns compound monthly at a constant rate.
- Contributions are made at the end of each month.
- Tax, fees, and inflation are not included.
These results are general illustrations only and are not financial advice. Actual outcomes can differ.
Turn the estimate into a living plan
Fireball is preparing Australian budgeting, net worth and retirement planning. Join the waitlist for launch news.
Common questions
Terms explained
- FIRE number
A FIRE number is the invested amount you need for your investments to cover your yearly spending, often 25 times annual spending.
- Compound interest
Compound interest is earning returns on your past returns as well as on the money you put in.
- Real return
A real return is an investment return after inflation, which shows how much your buying power actually grew.
- Net worth
Net worth is everything you own minus everything you owe.