Tim’s Wealth Creation Calculator Compound Growth, Illustrated

The quiet power of time

Watch a small habit
become a fortune.

Plug in your own numbers and we’ll reveal exactly how far compound growth can carry you.

Or explore one of Tim’s stories

About your guide

Portrait of Tim

Tim Minnix

Patient investing, made plain

Tim believes the hardest part of building wealth isn’t picking winners; it’s staying in the chair. Through simple stories and steady, automatic contributions, he helps everyday people see the long-run power of compound interest, so the math stops feeling abstract and starts feeling inevitable.

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Step 1

How old are you today?

Drag the dial — we’ll keep your money working until age 75.

Slide to set your age
14080

We set your horizon to age 75 by default, but you can change the number of years on the next-to-last step.

Step 2

How much are you starting with?

Drag to set your opening principal — even a few dollars counts.

Slide to set your starting amount
$0$25k$50k

This is your one-time opening balance. With enough time, the habit of adding regularly tends to matter more than where you start.

Step 3

What annual return do you expect?

Drag the dial — the long-run stock market has historically averaged ~10–12%.

Slide to set your expected return
0%10%20%

Around 10% is often cited as the long-run U.S. stock market average, before fees and inflation. Real returns swing year to year and aren’t guaranteed — a lower figure makes for a more conservative estimate.

Step 4

How long will you let it grow?

Anchored to age 75 — slide to make the horizon your own.

45 years

Invested until age 75

13570

Time is the most powerful dial here. Because growth compounds on itself, the final years often add far more than the first.

Step 5

How much will you add each time?

Drag to set each contribution — this is where the magic compounds.

Slide to set each contribution
$0$1k$2k

This is how much you add each time, and how often. Steady, automatic contributions are what let compounding build real momentum.

Step 6

How often does it compound?

More frequent compounding earns interest on interest, sooner.

Monthly is common in illustrations. More frequent compounding credits growth sooner, so the same rate finishes a little higher — the gap is usually modest.

Step 7

When do you contribute?

Investing at the start of each period gives money slightly more time to work.

Contributing at the beginning gives each deposit a little extra time to grow, so it finishes slightly ahead of end-of-period. Paydays often line up with the start.

Your future

Ending balance after 60 years

$0

Here’s how it came together.

Total contributed $0
Growth earned $0
Growth multiple 0×

The climb, decade by decade

Each bar is your balance at the end of that decade.

What a little more each month could do

Same plan, with an extra monthly contribution added on top.

A projection, not a promise. Markets rise and fall along the way, and actual results depend on real returns, fees, and taxes.