How often does this compound?
Monthly, with deposits at the end of each month.
Compound Interest Calculator
What your money grows to.
You end up with
$0- You put in
- $0
- Growth
- $0
How it’s calculated
- End = start × (1 + monthly rate)^months
- plus deposits × ((1 + monthly rate)^months − 1) ÷ monthly rate
Example: $10,000 plus $500 a month at 7% for 20 years reaches $300,851, of which $170,851 is growth.
About the Compound Interest Calculator
How a starting amount and monthly deposits grow at a yearly return.
How to use this tool
- Enter what you are starting with.
- Enter what you add each month.
- Enter a yearly return and how long.
Frequently asked questions
What return should I use?
Use a figure you can defend. Returns are not guaranteed, and this does not account for inflation or tax.