Compound Interest Calculator
See how savings and investments grow with compound interest and regular deposits, with a year by year table of balance and interest earned.
Runs on your device
Result
Results appear here as you type.
What it does
Compound interest earns interest on previous interest. Add a starting amount, a rate and optional monthly contributions to see the growth over time.
How to use it
- Enter the starting amount and annual rate.
- Choose compounding frequency and years.
- Add regular contributions if any.
Example
The example fills in realistic values and runs the tool. Select Try an example above to see it.
When it helps
- Planning savings goals.
- Comparing savings accounts.
- Showing students the power of starting early.
Questions
Does compounding frequency matter much?
A little. At 5%, monthly compounding earns about 5.12% a year versus 5% annually.
Are taxes and fees included?
No. Subtract fees from the rate for a more realistic estimate.
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