Rule of 55 calculator

The Rule of 55 is an IRS provision that lets you take distributions from your current employer's 401(k) or 403(b) without the 10% early-withdrawal penalty, as long as you separate from service in the year you turn 55 or later. It's the single biggest tax-bracket lever for early retirees, and it has traps. RetireWise handles it correctly.

The short answer

  • You must separate from service in the year you turn 55 (or later). Not before, not at a previous job.
  • It applies only to that one employer's 401(k) or 403(b). Not IRAs, not old 401(k)s you didn't roll over.
  • You still owe ordinary income tax on the distribution. The rule only waives the 10% penalty.

What you'll need

  • Confirmation that your separation happens in the year you turn 55 or later (calendar year, not exactly your birthday)
  • A current employer 401(k) or 403(b). The rule doesn't apply to balances at previous employers.
  • Awareness that rolling the 401(k) to an IRA destroys the Rule of 55 eligibility for those funds

How RetireWise handles it

The mechanic: under IRC §72(t)(2)(A)(v), distributions from a 401(k) or 403(b) made after separation from service in or after the year the employee turns 55 are exempt from the 10% early-withdrawal penalty. The key phrase is "in or after." Quit in December at 54 and the rule doesn't apply even if you reach 55 the next month. Quit in January at 54 with a birthday later that calendar year, and you're fine.

The most common trap: people roll their 401(k) to an IRA "to consolidate" right before retirement. IRAs don't have a Rule of 55; they have rule 59½. Once the money's in an IRA, you're back to the standard early-withdrawal penalty until you hit 59½ (or use a separate exception like SEPP / Rule 72(t)).

A separate but related provision: 457(b) plans (common in public sector and nonprofit jobs) allow penalty-free distributions at any age after separation, regardless of whether you're 55. If you have a 457(b), tick that box too. It's an even more flexible bridge to 59½.

RetireWise lets you toggle Rule of 55 and 457(b) eligibility independently. The simulator routes early withdrawals through the correct account types and avoids applying the 10% penalty to amounts that qualify under either rule. Insights on the report page will flag whether your plan depends on these rules and what changes if it doesn't.

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