# Rule of 55 Calculator

> Retiring between 55 and 59? See the 401(k) withdrawal you need after tax, the 10% penalty the rule of 55 saves you and what's left at 59½.

Source: https://mycoastfire.com/rule-of-55-calculator
Last updated: 2026-09-26

Enter the 401(k) you'll leave with, what you spend and a tax rate. You'll see the withdrawal you need before tax, the 10% penalty you skip, and what's left at 59½ and beyond.

The rule of 55 lets you take money out of your 401(k) or 403(b) without the 10% early withdrawal tax, as long as you leave that employer in or after the calendar year you turn 55. You still owe income tax on every dollar, so this calculator grosses your spending up for tax and shows what’s left in the account at 59½, when the 10% stops applying to all your retirement accounts.

It works in today’s dollars, one month at a time. Each month it takes your spending divided by (1 − your tax rate) out of the 401(k) and grows the rest at your real return. Other savings are only touched once the 401(k) can’t cover a full month. The penalty figure is 10% of what you withdraw before 59½: what the same money would have cost you coming out of an IRA.

## Who qualifies for the rule of 55?

You qualify if you separate from service, meaning you stop working for the employer that sponsors the plan, in or after the year you reach 55. That’s the wording in [IRS Publication 575](https://www.irs.gov/publications/p575), and the calendar year is what counts, not your birthday. Someone who turns 55 in November 2026 can leave in March 2026 and still use it.

Leaving earlier doesn’t work, even if you wait. Publication 575’s own example is a worker who left at 49 and took money out the year he turned 55. He owed the 10%.

The exception covers 401(k) and 403(b) plans. The IRS [table of early distribution exceptions](https://www.irs.gov/retirement-plans/plan-participant-employee/retirement-topics-exceptions-to-tax-on-early-distributions) marks it “no” for IRAs. Governmental 457(b) plans don’t need it at all, because their distributions aren’t subject to the 10% in the first place, apart from money rolled in from another type of plan or IRA.

Qualified public safety employees in government plans get an earlier version: age 50 or 25 years of service under the plan, whichever comes first. Publication 575 extends the same rule to private-sector firefighters. This calculator starts at 55, so if you’re in that group, treat it as the picture from 55 onward.

## Where people lose the exception

### Rolling the 401(k) into an IRA

When you leave, someone will probably suggest rolling your 401(k) into an IRA. Once it’s there, the rule of 55 no longer applies to it. If you want an IRA for its investment choices, roll over only what you won’t need before 59½ and leave the rest in the plan.

### Old employers’ plans

The rule follows the job you leave at 55 or later. A 401(k) from a job you quit at 48 is still subject to the 10% before 59½. If your current plan accepts roll-ins, moving the old account into it before your last day may bring that money under the rule too, but ask the plan administrator to confirm it in writing before you count on it.

### Plans that only pay lump sums

Your plan decides how you can take money out. The IRS says a 401(k) [may pay a single lump sum](https://www.irs.gov/retirement-plans/plan-participant-employee/when-can-a-retirement-plan-distribute-benefits) and may also offer installments. Some plans only allow a full payout after you leave. Taking the whole balance in one year could push most of it into high tax brackets, and rolling it to an IRA to avoid that loses the exception. Read your summary plan description before you give notice, not after.

### Withholding

A lump sum or one-off partial withdrawal paid to you is an eligible rollover distribution, and the plan must withhold 20% for federal tax, per [Publication 575](https://www.irs.gov/publications/p575). You can’t opt out. To end up with $50,000 in hand, you’d have to request $62,500. If your actual rate on that is 12%, you’d get about $5,000 back when you file. Installments set up to run for 10 years or more aren’t eligible rollover distributions, so the 20% rule doesn’t apply to them.

## Rule of 55 vs 72(t) vs Roth contributions

These are the three common ways to reach retirement money before 59½ without the 10%.

|  | Rule of 55 | 72(t) payments | Roth IRA contributions |
| --- | --- | --- | --- |
| Accounts | The 401(k) or 403(b) of the job you leave | IRAs, and employer plans you’ve left | Roth IRA, up to what you put in |
| Age | Leave in or after the year you turn 55 | Any age | Any age |
| How much | Whatever the plan allows, when you want it | A fixed amount set by an IRS method | Up to your total contributions |
| Locked in? | No | Until the later of 5 years or 59½ | No |
| Income tax | Yes | Yes, from pre-tax accounts | No |

A 72(t) plan, or series of substantially equal periodic payments, is rigid. You pick one of three IRS methods and keep taking that amount until the later of five years or 59½, according to the [IRS SEPP FAQs](https://www.irs.gov/retirement-plans/retirement-plans-faqs-regarding-substantially-equal-periodic-payments). Start at 55 and you’re locked in until 60. Change the payments and you owe the 10% on every past year’s payment, plus interest.

Roth IRA contributions are the simplest. Under the ordering rules in [Publication 590-B](https://www.irs.gov/publications/p590b), your own contributions come out first, with no tax and no penalty. Earnings are a different story before 59½.

If I were leaving a job at 56 with most of my money in that 401(k), I’d spend from the 401(k) under the rule of 55, keep Roth contributions as the reserve for a bad year, and only set up a 72(t) for money already sitting in an IRA.

## A worked example

Maria leaves her job at 55 with $700,000 in her 401(k) and $100,000 in a brokerage account. She spends $50,000 a year and expects about 12% of each withdrawal to go to federal and state tax. These are the calculator’s defaults, with a 7% return and 3% inflation.

She needs $56,818 a year out of the 401(k), of which $6,818 goes to tax. At 59½ the account still holds $551,566. Over those four and a half years the rule of 55 saves her $25,568 in penalties. Her brokerage account alone would have paid the bills only until 57, so without the rule she’d be paying the 10% for more than two years or going back to work.

By 67, when she plans to start Social Security, the 401(k) is down to $239,958 and the untouched brokerage account has grown to $157,964.

The tax rate matters more than people expect. At 22% instead of 12%, she’d need $64,103 a year and would reach 67 with $128,959 in the 401(k). If she worked until 58 instead, the penalty avoided falls to $8,523, but she’d have $375,370 left at 67.

For the tax rate, a rough starting point is the total tax on last year’s return divided by your total income, plus your state’s rate if it taxes retirement withdrawals. Once a salary is no longer stacked on top, the rate on the withdrawals alone is often lower. It’s still a flat guess, and that’s this model’s biggest simplification.

It also breaks down past the age where other income starts. Set the end age to 90 and leave Social Security out, and Maria’s 401(k) runs dry at 71 and her brokerage account at 75. The [Coast FIRE calculator with Social Security](https://mycoastfire.com/coast-fire-calculator-with-social-security) shows how a benefit changes that picture, and the [4% rule calculator](https://mycoastfire.com/4-percent-rule-calculator) tests the longer stretch against bad markets.

## Retiring at 55 changes your Coast FIRE number

If the rule of 55 is what lets you stop at 55, your Coast FIRE target should be built around 55, not 65. Ten fewer years of growth is expensive. For $50,000 a year at a 4% withdrawal rate, the FIRE number is $1,250,000. A 40-year-old needs $705,849 invested today to coast to that by 55, against $482,221 to coast to 65.

The [retire at 55 calculator](https://mycoastfire.com/retire-at-55) works through the full plan, and the [Coast FIRE calculator](https://mycoastfire.com/) shows whether you’ve already hit the number.

Coast to 55 instead of 65

Set the retirement age to 55 and see how much you need invested now to stop contributing.

[Open the calculator with these numbers](https://mycoastfire.com/?age=40&ret=55&spend=50000&assets=300000&contrib=1500)

## Questions people ask

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

No. The IRS lists the separation-from-service exception for employer plans only. If you roll your 401(k) into an IRA after you leave, withdrawals before 59½ owe the 10% again unless some other exception covers them. Keep the money you'll need before 59½ in the plan.

### Do I have to be 55 on my last day of work?

No, you have to leave in or after the calendar year you turn 55. If your birthday is in November, a last day in March of that year still counts. Leaving at 54 in an earlier year doesn't, even if you wait until 55 to take the money.

### How much tax is withheld on a rule of 55 withdrawal?

Usually 20% for federal tax when the plan pays you a lump sum or a one-off partial withdrawal, because those are eligible rollover distributions and the withholding is mandatory. It's a prepayment, not your final bill. If your actual rate is lower, you get the difference back when you file.

### Is the rule of 55 better than 72(t)?

For the plan of the job you're leaving, usually yes. You can take any amount in any year the plan allows, while 72(t) locks you into fixed payments until the later of five years or 59½. 72(t) is the tool for IRAs and for plans you left before the year you turned 55.

## Keep reading

-   [Retire at 55 calculatorHow much you need to stop at 55, and what to have invested now.](https://mycoastfire.com/retire-at-55)
-   [Health insurance before 65The bill that starts the day you leave your job at 55.](https://mycoastfire.com/blog/coast-fire-health-insurance-before-65)
-   [4% rule calculatorHow long the money lasts once every account is open to you.](https://mycoastfire.com/4-percent-rule-calculator)