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Index Fund Growth Projector

Compounding is hard to picture until you see the numbers. Put in what you can invest, and watch how much of the ending balance is growth rather than your own money.

Your numbers never leave your browser

What you are investing

What you have to start with, and what you can add each month. The monthly number is the one that does the real work.

$

Invested today.

$

Added every month.

yrs

Up to 60 years.

Your assumptions

Nobody knows what the market will do. These are illustrative rates, not forecasts — try a few and see how much the answer moves.

Pick a scenario
%

Hypothetical. Edit this freely — the presets are only starting points.

%

Broad index funds usually run 0.03% to 0.20%. Leave blank if unsure.

The full guide

What Is an Index Fund? (And Why It's the Best Investment Most People Never Make)

You've heard the term. You've nodded along. Here's what an index fund actually is, why a 1% fee costs you over $100,000, and the exact fund to buy when you're ready to start.

Read the full guide

7 min read

A quick, important note

Every return figure here is hypothetical and illustrative. This projection assumes a constant annual return compounded monthly with contributions at each month end — real markets are nothing like that steady, and no return is guaranteed.

This calculator produces estimates for educational purposes only. It is not financial, investment, tax, or legal advice, and it cannot account for everything going on in your life. Your actual results will differ.

Before acting on anything you see here, consider talking with a qualified professional who can look at your full picture. See our full disclaimer for the details.

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