💰 Millionaire Calculator

How long until you hit seven figures? Enter what you have, what you add each month, and your expected return to see how many years to reach $1,000,000 — or any target you choose.

The path to a million

Becoming a millionaire is far less about a big income and far more about time, consistency, and compound growth. This calculator simulates your balance month by month until it hits your target. Try it and notice something striking: for most realistic scenarios, a large chunk of the final million is growth you never deposited — the market doing the work while you keep contributing.

Time is the hidden ingredient

The relationship between contribution and timeline isn't linear. Someone investing $1,000/month at 8% reaches $1M in about 25–26 years. Doubling to $2,000/month doesn't halve the time — it cuts it to about 19 years — because in the early scenario, compounding contributes more of the total. The lesson: starting earlier often beats contributing more, because it gives growth more time to dwarf your deposits.

Realistic assumptions

  • Return: a diversified stock portfolio has historically returned ~7–10% before inflation. Using 7–8% is reasonable; remember real (after-inflation) growth is a few points lower, so tomorrow's million buys less than today's.
  • Consistency beats timing. Automatic monthly investing (dollar-cost averaging) removes the temptation to time the market and keeps the compounding streak unbroken.
  • Fees matter. A 1% annual fee can delay your millionaire date by years — see our investment fee impact calculator.

The number isn't magic — a million isn't what it once was — but the exercise reveals the real engine of wealth: modest, automatic, relentless investing over decades.

Frequently asked questions

How long does it take to save $1 million?

It depends on your starting amount, monthly contribution and return. As a rough guide, $1,000/month at 8% reaches $1M in about 25 years; higher contributions or returns shorten that considerably.

Does starting early really matter that much?

Enormously. Because compounding grows with time, money invested in your 20s does far more work than the same amount invested in your 40s. Starting earlier often beats contributing more later.

Is $1 million enough to retire?

It depends on your spending. At a 4% withdrawal rate, $1M supports about $40,000/year. Use our FIRE number calculator to translate your own expenses into a target.

This calculator is for educational purposes only and does not constitute financial advice. Results are estimates based on the inputs and assumptions shown.