Compound Interest Calculator
Simulate compound growth from initial balance, monthly contributions, term, nominal annual rate, and compounding frequency.
How to use
- Enter initial amount, monthly contribution, years, annual rate, and compounding frequency.
Capabilities and scope
Monthly contributions are added at month-end after applying an effective monthly rate derived from the selected frequency.
How it works
Each month the balance grows by the effective monthly rate, then the contribution is added.
Example
With 10,000 initial, 500 monthly, 10 years, and 6%, the runner separates contributions from growth.
Useful for
- Compare long-term saving or investment scenarios
Before you use it
- Actual returns, taxes, fees, and market volatility are not modeled.
Frequently asked questions
Are contributions made at the start of each month?
No. The current runner assumes month-end contributions.