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Use this compound interest calculator for a clear financial estimate. Results update instantly in your browser.
What this calculator does
Project how savings or investments can grow when returns are reinvested.
How to use this calculator
- Enter the starting balance, rate, timeframe, compounding, and deposits.
- Review the calculation assumptions before using the result.
- Review total contributions separately from investment growth.
How to calculate
Enter the initial balance, rate, term, and compounding frequency, then configure recurring deposits, their timing, and annual growth. The growth rate applies from the first investment year.
Worked example
The initial balance and each growing deposit are compounded separately before being combined into the final balance.
Understanding your result
Review total contributions separately from investment growth.
- Investment returns are not guaranteed.
- Double-check values and units before calculating.
Investment returns are illustrative, before fees and taxes, and not guaranteed.
Frequently asked questions
What does this compound interest calculator do?
Project how savings or investments can grow when returns are reinvested.
How do I use this compound interest calculator?
Enter the starting balance, rate, timeframe, compounding, and deposits.
What does the result mean?
Review total contributions separately from investment growth.
What should I check before relying on it?
Investment returns are not guaranteed.