$100,000 for 30 years at returns from 4% to 10%
| Return | Balance | Multiple | In today’s dollars |
|---|---|---|---|
| 4% | $324,340 | 3.2× | $133,624 |
| 5% | $432,194 | 4.3× | $178,058 |
| 6% | $574,349 | 5.7× | $236,624 |
| 7% | $761,226 | 7.6× | $313,615 |
| 8% | $1,006,266 | 10.1× | $414,568 |
| 10% | $1,744,940 | 17.4× | $718,892 |
Year by year at 7%
| Year | Put in so far | Balance | In today’s dollars |
|---|---|---|---|
| 1 | $100,000 | $107,000 | $103,883 |
| 2 | $100,000 | $114,490 | $107,918 |
| 3 | $100,000 | $122,504 | $112,109 |
| 5 | $100,000 | $140,255 | $120,985 |
| 10 | $100,000 | $196,715 | $146,375 |
| 15 | $100,000 | $275,903 | $177,092 |
| 20 | $100,000 | $386,968 | $214,255 |
| 25 | $100,000 | $542,743 | $259,217 |
| 30 | $100,000 | $761,226 | $313,615 |
The range in 1,000 simulated markets
A 7% average does not arrive as 7% every year. In 1,000 simulated sequences of returns averaging 7% with 12% volatility, this is where $100,000 ended up: 1 in 10 markets finished below the first figure, half below the middle one, and 1 in 10 above the last.
| After | Weak (1 in 10 lower) | Middle | Strong (1 in 10 higher) |
|---|---|---|---|
| 15 years | $138,570 | $253,756 | $432,425 |
| 30 years | $278,418 | $629,878 | $1,404,116 |
The middle of the simulation sits below the steady 7% figure of $761,226 because ups and downs cost compounding: a 20% loss needs a 25% gain to get back.
What $761,226 would pay in retirement
At a 4% first-year withdrawal, $761,226 pays about $30,449 a year, $2,537 a month, before tax; in today’s dollars that is about $12,545 a year. How long a balance near it lasts at each withdrawal: how long $750,000 lasts. To stop saving early and let growth do the rest, see Coast FIRE numbers by age.
$100,000 for other terms
| Years | Balance | In today’s dollars |
|---|---|---|
| $100,000 for 5 years | $140,255 | $120,985 |
| $100,000 for 10 years | $196,715 | $146,375 |
| $100,000 for 15 years | $275,903 | $177,092 |
| $100,000 for 20 years | $386,968 | $214,255 |
| $100,000 for 25 years | $542,743 | $259,217 |
| 30 years | $761,226 | $313,615 |
| $100,000 for 40 years | $1,497,446 | $459,052 |
| $100,000 for 50 years | $2,945,703 | $671,936 |
Other amounts for 30 years
$1,000: $7,612, $5,000: $38,061, $10,000: $76,123, $20,000: $152,245, $25,000: $190,306, $50,000: $380,613, $200,000: $1,522,451, $250,000: $1,903,064, $500,000: $3,806,128, $1,000,000: $7,612,255, $2,000,000: $15,224,510.
How it is worked out
Monthly amounts are deposited at the end of each month and compounded monthly at the rate that equals the annual return; lump sums compound once a year. The headline return is 7% a year, the Trinity-style average the site’s retirement pages use; stock-heavy portfolios have averaged more over long periods and bond-heavy ones less, which is why every page shows 4% to 10%. Today’s dollars divide by 3% inflation a year. The range comes from 1,000 simulated sequences of yearly returns averaging 7% with 12% volatility, with each year’s deposits added through the year. Fees and taxes are not taken out. More on the methodology page.