Rule of 55 Calculator: Will Your 401(k) Carry You to 59½? (2026)
The rule of 55 lets you withdraw from your current employer’s 401(k) without the 10% penalty if you leave the job in or after the calendar year you turn 55. Income tax still applies. Whether it works depends on the balance in that one plan, what you spend, and how markets treat you in the first years.
On this page
Check your plan
The rule of 55 is IRC §72(t)(2)(A)(v); the age-50 rule for public-safety employees is §72(t)(10). Each year’s withdrawal is taxed with the 2026 brackets and standard deduction, held in today’s dollars, and state tax is a flat rate. Withdrawals come out at the start of each year, and the year you turn 59 counts as half a year. Your plan withholds 20% federal tax from each withdrawal, so check sizes differ from the amounts here, but the tax owed is the same.
A worked example
These are the calculator’s starting numbers. You leave your job in the year you turn 55 with $400,000 in its 401(k). You need $50,000 a year after tax, have no other income, file single, and live in a 5% state. The money earns 4% a year after inflation.
| Yearly withdrawal to keep $50,000 after tax | $57,614 |
| Federal and state tax on it (no 10% penalty) | −$7,614 |
| Withdrawals for 4½ years | $257,975 |
| Left at 59½, at 4% a year | $189,665 |
| Left at 59½ if markets fall 25% in the first year | $75,763 |
The plan works at every return we tested, but the last line is the one to plan for. A fall right after you start withdrawing takes a lasting bite, because you’re selling at low prices to pay the bills. Keeping a year or two of spending in cash or a stable-value fund inside the plan is the usual defence.
The three conditions
The year you leave. You must leave the employer in or after the calendar year you turn 55, or 50 for qualifying public-safety workers. Leave at 54 and that plan never qualifies, even after your 55th birthday. Why you leave doesn’t matter: retiring, quitting, a layoff and being fired all count.
The plan. Only the 401(k) of the employer you’re leaving is covered. Old 401(k)s and IRAs aren’t. If this plan accepts roll-ins, moving old 401(k)s into it before your last day generally brings that money under the rule too. Confirm with the plan before you rely on it.
The plan’s payout options. The law allows the withdrawals; your plan decides how. Some plans let you withdraw whenever you ask. Others pay only the whole balance at once, which would put it all into one year’s income. Check your summary plan description for “partial distributions” or “installments.”
Frequently asked questions
How much can I withdraw under the rule of 55?
There’s no limit set by the rule. You can take as much as your plan allows, from one small withdrawal to the whole balance. The practical limit is tax: every dollar is ordinary income, so large withdrawals in one year can push you into higher brackets.
Does the rule of 55 apply if I get another job?
Yes. Once you’ve left the employer in or after the year you turn 55, that plan’s money stays penalty-free even if you work somewhere else. The new employer’s plan doesn’t qualify until you leave that job too, under the same age test.
Is the 20% withholding the tax I owe?
No, it’s a prepayment. Each withdrawal has 20% federal tax withheld, and you settle the real amount on your return. With no other income, you may get part of it back. With other income, you may owe more.
Related reading
- The rule of 55, in full
- 72(t) equal payments: the IRA alternative
- Every exception to the 10% penalty
Sources: IRC §72(t)(2)(A)(v) and §72(t)(10) · IRS: Exceptions to tax on early distributions · IRS Rev. Proc. 2025-32