Coast FIRE Number at 55
At 55, Coast FIRE only makes sense once you count Social Security and plan for the gap before Medicare and your full benefit start. Done that way, a lot of people are closer than the table suggests, and much more exposed to a bad market year.
Updated · 3 min read
| Yearly spending in retirement | FIRE number | Coast FIRE number at 55 |
|---|---|---|
| $40K | $1,000,000 | $683,179 |
| $60K | $1,500,000 | $1,024,768 |
| $80K | $2,000,000 | $1,366,358 |
| $100K | $2,500,000 | $1,707,947 |
Retiring at 65 with a 7% return, 3% inflation and a 4% withdrawal rate, in today's dollars.
How fast you get there from $560,000
Starting at 55 with $560,000 invested and planning to spend $60,000 a year, here's when you'd cross the line at different monthly contributions.
| Monthly contribution | Coast FIRE reached at |
|---|---|
| $500 | Not before 65 |
| $1,000 | Not before 65 |
| $2,000 | Not before 65 |
| $3,000 | Not before 65 |
At 55, the plain Coast FIRE number is a tall order: $1,024,768 for $60,000 a year, with only ten years of growth left. Once you subtract the Social Security you’ll actually get and plan for the years before it starts, the target usually drops by a lot. What goes up is how much a single bad year can hurt.
Does Coast FIRE still apply at 55?
It does, with two changes. You have to count guaranteed income, or the number is so large it’s useless. And you have to take the word “coast” less literally. Ten years isn’t long enough to ride out much, so I think of Coast FIRE at 55 as permission to cut contributions, not to stop them.
The dates that shape your number
Three ages matter more than your balance right now. Medicare generally starts at 65, so retiring earlier means buying health insurance for the gap, and none of the numbers here include that. Social Security’s full retirement age is 67 for anyone born in 1960 or later, and claiming at 62 cuts the monthly check by about 30% for good. And 55 itself: if you leave your job in or after the year you turn 55, the IRS lets you withdraw from that employer’s plan without the 10% additional tax.
Every year between your last paycheck and your first Social Security check is a year your portfolio covers everything. That bridge is what makes retiring in your early 60s so expensive.
Why sequence risk matters now
A 25% drop at 35 is painful but gives you decades to recover. A 25% drop at 56, right after you stop contributing, can take you from coasting to short, with less time for growth and fewer paychecks to fix it. That’s sequence risk, and it’s why I’d hold more in bonds and cash at 55 than a straight Coast FIRE calculation assumes, even though a lower expected return raises your number.
Linda at 55
Linda has $640,000 invested, expects to spend $60,000 a year and plans to retire at 65, when Medicare starts. Her Social Security estimate is $26,000 a year at 67. Counting the benefit and covering the two years before she claims, her portfolio needs $902,000 at 65, which makes her Coast FIRE number $616,227. So she's already there, with about $24,000 to spare.
| What happens | Coast FIRE age |
|---|---|
| Markets drop 25% right away, she keeps $1,500 a month | 64 |
| Markets drop 25%, she raises it to $2,500 a month | 60 |
| No drop, but she retires at 62 instead of 65 | not before 62 |
Retiring at 62 stretches the bridge to five years and means she needs $980,000 by 62. It also leaves three years without Medicare, which this math doesn’t price in.
Run Linda's numbers
Spending is already adjusted for Social Security and the bridge to 67.
What to prioritize from 55
Get your real benefit estimate from ssa.gov and plug it in, following the Social Security guide. Decide on your retirement age with Medicare in mind, and price health insurance before you commit to anything earlier than 65. Then keep contributing something, because at 55 the cheapest protection against a bad decade is a few more years of paychecks going in.
Other ages: 25, 28, 30, 31, 32, 35, 40, 45, 50. Or see every age on one table.
Run your own numbers at 55
Questions people ask
What is the rule of 55?
If you leave your job during or after the year you turn 55, you can take money from that employer's 401(k) or similar plan without the usual 10% additional tax on early withdrawals. It doesn't apply to IRAs, and you still owe regular income tax on what you take out.
Should I stop contributing once I reach Coast FIRE at 55?
I wouldn't stop entirely. With ten years left, one bad market stretch can put you back below the line, and you won't have much time to recover. Dropping to a smaller amount and spending the difference is a better use of the milestone than going to zero.