Free investing calculator suite
Compound Interest Calculator
See how your money can grow with compound interest — try it below.
Your numbers
$10,000
$500 per month
8.0%
20 years
Contributions are added at the same rhythm as compounding.
Your estimated results
Estimated final balance
$343,778
After 20 years
Money you contribute
$130,000
Initial amount plus every contribution
Estimated growth
$213,778
62.2% of the final balance
Contributions vs growth over time
Your contributions are money you put in. Growth represents estimated investment gains based on your assumed return.
Four calculators, one clear picture
Simple investing calculators that help you understand what your money can become, how much you need to invest, when you could reach your goal, and how much fees can cost you.
Compound Interest Calculator
See how your money could grow over time with contributions and compound returns.
Calculate growthInvestment Goal Calculator
Find out how much you may need to invest each month — or how long it could take to reach your goal.
Plan my goalFIRE / Retirement Calculator
Estimate the portfolio you may need and when you could reach financial independence.
Calculate my FI dateInvestment Fee Drag Calculator
See how small differences in investment fees can affect your long-term wealth.
See the fee impactYou can grow your money — but where should each dollar go?
The 4-Bucket System is a simple way to organize your money around four different jobs: Safety, Income, Growth, and Opportunity.
Safety
Protect against financial surprises.
Income
Create money designed to produce ongoing cash flow.
Growth
Build long-term wealth.
Opportunity
Set money aside for opportunities without disrupting your core plan.
Get simple money and investing insights
Practical ideas for building, organizing, and investing your money — without the jargon.