# Retire at 55 Calculator

> How much you need to retire at 55, what to have invested now to coast there, and how the rule of 55 opens your 401(k) years before 59½.

Source: https://mycoastfire.com/retire-at-55
Last updated: 2026-09-24

For most people, 55 is the earliest age where the tax code meets you halfway. Leave your job in or after the year you turn 55 and that employer's 401(k) opens up without the 10% early withdrawal tax.

To retire at 55 spending $60,000 a year, plan on about $1,600,000 invested. That’s at a 3.75% withdrawal rate, which is what I’d use for a retirement that has to last 35 to 40 years; at a straight 4% the figure is $1,500,000.

## How much do you need to retire at 55?

Divide your yearly spending by your withdrawal rate. In today’s dollars:

| Yearly spending | At 4% | At 3.75% | At 3.5% |
| --- | --- | --- | --- |
| $40,000 | $1,000,000 | $1,066,667 | $1,142,857 |
| $50,000 | $1,250,000 | $1,333,333 | $1,428,571 |
| $60,000 | $1,500,000 | $1,600,000 | $1,714,286 |
| $80,000 | $2,000,000 | $2,133,333 | $2,285,714 |
| $100,000 | $2,500,000 | $2,666,667 | $2,857,143 |

Why not just use 4%? In [William Bengen’s 1994 study](https://www.financialplanningassociation.org/sites/default/files/2021-04/MAR04%20Determining%20Withdrawal%20Rates%20Using%20Historical%20Data.pdf), a 4% starting withdrawal from a half-stock, half-bond portfolio never ran out in less than 33 years of U.S. history, and rates up to about 3.5% lasted at least 50. The [Trinity Study](https://www.aaii.com/journal/199802/feature.pdf) stopped at 30-year periods, where 4% survived 95% of the time for a 50/50 portfolio and 98% for 75% stocks.

At 55, 33 years takes you to 88. That’s probably enough for one person and a bit short for a couple planning around whoever lives longer. So I split the difference at 3.75%, and that’s what the calculator above uses. If you have a pension or expect a solid Social Security check, 4% is easier to defend, because the portfolio stops carrying the whole load at 62 or 67.

## The rule of 55 is what makes 55 different

Normally, taking money out of a 401(k) before 59½ costs you a 10% additional tax. The [IRS makes an exception](https://www.irs.gov/retirement-plans/plan-participant-employee/retirement-topics-exceptions-to-tax-on-early-distributions) when you separate from your employer during or after the year you turn 55. You don’t have to wait for your birthday. Leave in March of the year you turn 55 and it still counts.

The fine print is where people lose it:

-   It covers only the plan of the employer you’re leaving. A 401(k) from a job you left at 45 doesn’t qualify, and neither does any IRA.
-   Roll that plan into an IRA and the exception is gone. It stays with the plan, so take what you’ll need before 59½ from the plan itself.
-   If your current plan accepts roll-ins, moving old 401(k)s into it before you leave puts that money under the rule too. Ask the plan administrator first.
-   Some plans don’t allow partial withdrawals after you leave, as [Fidelity points out](https://www.fidelity.com/learning-center/personal-finance/what-is-rule-of-55), which can force an all-or-nothing payout. Read your plan’s distribution rules a year ahead.
-   It waives the 10%, not income tax. Pre-tax withdrawals are still taxed as ordinary income.

Public safety employees in state and local government plans get the same exception from 50. And if you have a governmental 457(b), it’s better still: its distributions aren’t subject to the 10% additional tax at any age, except on money rolled in from other plan types.

If most of your savings sit in that plan, the rule of 55 shrinks the stretch where your money is hard to reach to almost nothing. That’s the biggest practical difference between retiring at 55 and at 50, where you’d be relying on [72(t) payments or a Roth conversion ladder](https://mycoastfire.com/retire-at-50).

## How much do you need invested now to coast to 55?

These are the balances that would grow to the full number by 55 without another contribution, at $60,000 of spending, 7% returns and 3% inflation:

| Your age now | Coast FIRE number at 3.75% | At 4% |
| --- | --- | --- |
| 30 | $617,243 | $578,665 |
| 35 | $746,774 | $700,100 |
| 40 | $903,487 | $847,019 |
| 45 | $1,093,086 | $1,024,768 |
| 50 | $1,322,474 | $1,239,820 |

## Monica’s plan: coast at 50, stop at 55

Monica is 36, has $250,000 invested and adds $4,000 a month. At $60,000 of spending and 3.75%, her Coast FIRE number today is $775,774. She crosses it at 50, and if she stops contributing then, her balance still grows to about $1,602,000 by 55.

| What changes | Coast FIRE age |
| --- | --- |
| Nothing: $4,000 a month, 3.75% | 50 |
| She can only invest $3,000 a month | Not before 55 |
| She uses a 4% withdrawal rate | 48 |
| She retires at 57 instead of 55 | 48 |
| She counts a $24,000 Social Security benefit from 67 | 44 |

The last row uses a $24,000 yearly benefit and sets aside the full amount for each of the 12 years between 55 and 67. That drops her target at 55 to $1,248,000. The [Social Security version of the calculator](https://mycoastfire.com/coast-fire-calculator-with-social-security) does that math for you.

Here’s how I’d use those coasting years. From 50, Monica takes a less demanding job that still has a 401(k). Before she leaves it, in the year she turns 55, she rolls her old 401(k)s into that plan. Since nearly all her savings are in 401(k)s, the rule of 55 then covers almost everything, and she doesn’t need a Roth ladder or a big brokerage account to get from 55 to 59½.

## Ten years without Medicare

[Medicare starts at 65](https://www.medicare.gov/basics/get-started-with-medicare), so a 55-year-old retiree buys health insurance for a decade. COBRA covers up to [18 months](https://www.dol.gov/agencies/ebsa/about-ebsa/our-activities/resource-center/faqs/cobra-continuation-health-coverage-workers) at the full premium plus 2%, which gets you to about 56½. After that it’s usually a Marketplace plan, priced at [up to three times](https://www.healthcare.gov/how-plans-set-your-premiums/) what a younger enrollee pays.

There’s a catch that’s specific to the rule of 55. Marketplace subsidies depend on income, and every pre-tax dollar you pull from your 401(k) counts as income. If you’ll also have Roth money or a brokerage account, mixing withdrawals can keep your taxable income, and your premium, lower. Our [guide to health insurance before 65](https://mycoastfire.com/blog/coast-fire-health-insurance-before-65) explains how the subsidy is figured.

## Seven years until the first Social Security check

You can claim at 62. For anyone born in 1960 or later, that means a [30% smaller check](https://www.ssa.gov/benefits/retirement/planner/agereduction.html) than waiting until 67. Your benefit is based on your highest 35 years of earnings, with [zeros for missing years](https://www.ssa.gov/benefits/retirement/planner/stopwork.html). If you started full-time work at 22, you’ll have 33 years by 55, so two zeros go into your average. That’s a modest hit, and less than it would be at 50.

Your statement assumes you [keep earning your current pay](https://www.ssa.gov/policy/docs/briefing-papers/bp2020-01.html) until you claim, so shade its estimate down a bit. My view on timing: claiming at 62 makes the bridge shorter, but it locks in a smaller check for life, and that hurts most in your late 80s and 90s, when your savings may be running thin. If your 401(k) is large enough to carry you to 67, I think waiting is usually the stronger plan.

Run Monica's numbers with Social Security

Enter her $24,000 benefit at 67 and see how much it lowers the target.

[Open the Social Security calculator](https://mycoastfire.com/coast-fire-calculator-with-social-security)

## Where a 55 plan is fragile

The first five years carry the most risk. You’ve stopped earning, you’re drawing more than you will once Social Security starts, and a bad market then hurts the most. The calculator’s steady 7% hides that, so leave yourself room to cut spending in a bad year. The [Monte Carlo calculator](https://mycoastfire.com/coast-fire-monte-carlo-calculator) can at least show how uneven returns change your odds of reaching the number in the first place.

The rule of 55 also depends on paperwork you don’t control. Your employer’s plan decides whether you can take partial withdrawals, whether it accepts roll-ins and how fast it pays. Check all three before you give notice, not after.

Planning a different age? [Retire at 40](https://mycoastfire.com/retire-at-40), [Retire at 45](https://mycoastfire.com/retire-at-45), [Retire at 50](https://mycoastfire.com/retire-at-50), [Retire at 60](https://mycoastfire.com/retire-at-60).For the years before 59½, see the [rule of 55 calculator](https://mycoastfire.com/rule-of-55-calculator).

## Questions people ask

### Can I retire at 55 with $1 million?

At a 3.75% withdrawal rate, $1 million supports about $37,500 a year in today's dollars, or $40,000 at 4%. Once Social Security starts, the portfolio has to cover less, so the real question is whether you can live on that amount for the seven to twelve years before you claim.

### What is the rule of 55?

If you leave your job during or after the calendar year you turn 55, withdrawals from that employer's 401(k) or 403(b) aren't subject to the 10% additional tax on early distributions. You still owe regular income tax. Some public safety employees in government plans can use it from 50.

### Does the rule of 55 apply to IRAs?

No. It only covers the workplace plan of the employer you leave. If you roll that plan into an IRA, withdrawals from the IRA before 59½ are subject to the 10% additional tax again unless another exception applies.

### When does Medicare start if I retire at 55?

At 65, whenever you stop working. That leaves ten years of health insurance to buy on your own, usually through COBRA for up to 18 months and then an ACA Marketplace plan.

## Keep reading

-   [Retire at 50A longer bridge and a lower withdrawal rate.](https://mycoastfire.com/retire-at-50)
-   [Retire at 60Past 59½, and five years from Medicare.](https://mycoastfire.com/retire-at-60)
-   [Coast FIRE with Social SecurityCount your benefit and the years before it starts.](https://mycoastfire.com/coast-fire-calculator-with-social-security)