Compound Interest Calculator
Shows how savings grow with monthly compounding and regular contributions.
Your result
Estimate only. Results update as you type.
How this calculator works
Each month: balance × (1 + rate ÷ 12) + contribution.
Worth knowing
Interest earned in a savings account is taxable income, so your real return is lower than the headline rate.
Guides for this calculator
- Using a Compound Interest Calculator in Australia: A Step-by-Step Guide
- Common Compound Interest Mistakes (and a Better Way)
Questions
- Are investment returns guaranteed?
- Only some products, such as term deposits, have fixed rates. Share and fund returns vary and can be negative.
- Is my bank deposit protected?
- The Financial Claims Scheme guarantees deposits up to $250,000 per account holder per authorised bank.
- Is this investment advice?
- No. The calculators provide general information only.
This calculator gives general estimates using published Australian rates and formulas. It doesn’t consider your personal circumstances. Check current figures with the ATO, your state government or a qualified professional before making decisions. See our disclaimer.