CALCULATOR
Compound Interest Calculator
Compare principal and compound growth over time using your own contribution and rate assumptions.
Estimate future value with monthly compounding and end-of-month contributions.
Result
Final amount 63,054,779
Total contributions 46,000,000
Interest earned 17,054,779
Investment period 120 months
Contributions, interest, and total value over time
Month 120
Contributions46,000,000
Interest17,054,779
Total value63,054,779
How this calculator works
Interest is added at the selected compounding interval, and later periods earn returns on the accumulated balance.
Actual investment returns fluctuate and can include taxes, fees, and losses that this estimate does not model.
Calculation example
Example input: Initial 10,000 · Monthly 100 · Annual return 5% · 10 years
Result: The result separates total contributions from estimated compound growth.
Frequently asked questions
When are recurring contributions added?
The estimate assumes contributions are added at the end of each month.
Does the result guarantee investment returns?
No. It is a projection based on your assumptions and excludes market losses, taxes, and fees.