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What $1,000 a month for 30 years becomes
Investing $1,000 a month is about $32.88 a day. Over 30 years you’d contribute $360,000 in total. What it turns into depends on the return:
| Average return | Balance after 30 years | Growth |
|---|---|---|
| 5% (conservative) | $832,259 | $472,259 |
| 7% (≈ stocks after inflation) | $1,219,971 | $859,971 |
| 8% (our default) | $1,490,359 | $1,130,359 |
| 10% (≈ S&P 500 long-run) | $2,260,488 | $1,900,488 |
At 8%, every dollar you put in becomes about 4.1 dollars. Notice the shape of the curve: you don’t reach half of the final balance until year 23 — the last 7 years produce as much as the first 23 combined. That is why starting matters more than the amount.
Year by year (8%)
| Year | You put in | Balance |
|---|---|---|
| 5 | $60,000 | $73,477 |
| 10 | $120,000 | $182,946 |
| 15 | $180,000 | $346,038 |
| 20 | $240,000 | $589,020 |
| 25 | $300,000 | $951,026 |
| 30 | $360,000 | $1,490,359 |
Assumes contributions at the end of each month, monthly compounding and a constant return; ignores taxes, fees and inflation. Educational estimates, not advice.
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Open calculator →Questions people ask
How much is $1,000 a month for 30 years?
You would contribute $360,000. At an 8% average annual return, compounded monthly, it grows to about $1,490,359; at 10% about $2,260,488; at 5% about $832,259.
Is 8% a realistic return for $1,000 a month?
It is close to the long-run average of a broad US stock index fund including dividends (about 10% before inflation, 7% after). Real returns swing widely year to year; use the calculator to test other rates.
What if I invest $1,000 a month for 40 years instead of 30?
At the same 8% average return it grows to about $3,491,008, from $480,000 contributed. The extra 10 years add about $2,000,648, because growth starts earning growth.
How long does $1,000 a month take to reach $1 million?
About 26 years at an 8% average annual return, starting from zero. Hypothetical, not guaranteed; real returns vary year to year.