$100,000 for 15 years at returns from 4% to 10%
| Return | Balance | Multiple | In today’s dollars |
|---|---|---|---|
| 4% | $180,094 | 1.8× | $115,596 |
| 5% | $207,893 | 2.1× | $133,438 |
| 6% | $239,656 | 2.4× | $153,826 |
| 7% | $275,903 | 2.8× | $177,092 |
| 8% | $317,217 | 3.2× | $203,609 |
| 10% | $417,725 | 4.2× | $268,122 |
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 |
| 4 | $100,000 | $131,080 | $116,463 |
| 5 | $100,000 | $140,255 | $120,985 |
| 6 | $100,000 | $150,073 | $125,684 |
| 7 | $100,000 | $160,578 | $130,565 |
| 8 | $100,000 | $171,819 | $135,635 |
| 9 | $100,000 | $183,846 | $140,903 |
| 10 | $100,000 | $196,715 | $146,375 |
| 11 | $100,000 | $210,485 | $152,059 |
| 12 | $100,000 | $225,219 | $157,964 |
| 13 | $100,000 | $240,985 | $164,099 |
| 14 | $100,000 | $257,853 | $170,471 |
| 15 | $100,000 | $275,903 | $177,092 |
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) |
|---|---|---|---|
| 8 years | $108,043 | $163,394 | $245,062 |
| 15 years | $138,570 | $253,756 | $432,425 |
The middle of the simulation sits below the steady 7% figure of $275,903 because ups and downs cost compounding: a 20% loss needs a 25% gain to get back.
What $275,903 would pay in retirement
At a 4% first-year withdrawal, $275,903 pays about $11,036 a year, $920 a month, before tax; in today’s dollars that is about $7,084 a year. How long a balance near it lasts at each withdrawal: how long $300,000 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 |
| 15 years | $275,903 | $177,092 |
| $100,000 for 20 years | $386,968 | $214,255 |
| $100,000 for 25 years | $542,743 | $259,217 |
| $100,000 for 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 15 years
$1,000: $2,759, $5,000: $13,795, $10,000: $27,590, $20,000: $55,181, $25,000: $68,976, $50,000: $137,952, $200,000: $551,806, $250,000: $689,758, $500,000: $1,379,516, $1,000,000: $2,759,032, $2,000,000: $5,518,063.
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.