There are three ways to get at retirement money before 59½ without the 10% penalty. Two of them, the Roth conversion ladder and the Rule of 55, get most of the attention. The third, a 72(t) SEPP, is the most flexible about which account it taps and the most unforgiving once you start. Here's how it works and when the rigidity is worth it.
If you retire before 59½ with most of your money in a traditional IRA, you hit a wall: the IRS adds a 10% penalty on top of ordinary income tax for early withdrawals. Section 72(t) of the tax code lists the exceptions, and one of them, buried in subsection (t)(2)(A)(iv), is the workhorse for early retirees who can't reach their money any other way. It's called a series of substantially equal periodic payments, or SEPP. Commit to a fixed, formula-driven stream of withdrawals, and the penalty disappears on those payments. The catch is in the word "commit."
A SEPP must continue for the longer of five years or until you reach 59½. That sounds simple and isn't, because the five-year clock runs from the date of your first payment, not the calendar year. Start a SEPP at 52 and 59½ is the binding date, roughly seven and a half years out. Start at 58, expecting to stop at 59½, and you're actually locked in until about 63, because five full years have to pass first. That late-start trap catches people who assume the age cutoff is the only one.
And the penalty for getting it wrong is severe. Change the amount, take an extra dollar, or miss a payment before the period ends, and you trigger the recapture tax: the 10% penalty is applied retroactively to every SEPP payment you've ever taken, plus interest going back to the first one. The only changes the IRS forgives are death, disability, a qualified public-safety-officer distribution, and a single one-time switch to the RMD method described below. As one planner puts it, a 72(t) IRA is best thought of as a locked cage: nothing goes in, and only the scheduled payment comes out.
Notice 2022-6 specifies three methods, and the choice sets your annual amount for the life of the schedule:
| Method | Relative payment | Recalculated yearly? |
|---|---|---|
| Required minimum distribution (RMD) | Lowest | Yes — moves with your balance |
| Fixed amortization | Highest | No — locked at year one |
| Fixed annuitization | Just below amortization | No — locked at year one |
The two fixed methods use an assumed interest rate, and this is where 2026 is generous. The rate is capped at the greater of 5% or 120% of the federal mid-term rate for one of the two months before you start. Because that 120% figure has been running below 5% lately, 5% is effectively the ceiling right now, which produces a much larger payment than the sub-1% rates that made SEPPs nearly useless a few years ago. Confirm the current figure before you start, since the federal rate is republished monthly. All three methods also use an IRS life expectancy table, and the one-time switch from a fixed method to the RMD method is the only escape valve if a fixed payment is draining the account faster than you'd like.
Because the 72(t) IRA is locked, the goal is to lock up as little as possible. The standard technique is to split your IRA first: before the first payment, divide it into a 72(t) IRA sized to produce exactly the income you need, and a second IRA you leave untouched and can tap later by other means. If you need $30,000 a year, you run the SEPP on only the slice that generates $30,000, not the whole balance. It keeps the rest of your money flexible and shrinks the damage if anything ever goes wrong with the schedule.
These are the three legitimate doors to pre-59½ money, and they suit different situations:
| Method | Which money | Flexibility |
|---|---|---|
| Roth conversion ladder | Traditional IRA/401k converted to Roth | High — you choose each year's amount |
| Rule of 55 | 401k/403b from the job you left at 55+ | Medium — depends on plan rules |
| 72(t) SEPP | IRA (or 401k), any age | Low — locked for 5 years or to 59½ |
The Roth conversion ladder is usually the first choice because you control the size of each conversion and can pause it; its only real cost is the five-year seasoning wait before the first dollars come out penalty-free. The Rule of 55 is simplest if you're leaving a job at 55 or later and the money you need is in that employer's plan. The 72(t) SEPP is the one that works when neither fits: when your money is in an IRA, you're well under 55, and you can't wait five years for a ladder to mature.
It's the rigid option, and rigidity is the whole risk. A 72(t) makes sense when you need IRA money before 59½, don't have a five-year runway to build a Roth ladder, aren't eligible for the Rule of 55, and can commit to a fixed payment for years without slipping. If you do have that runway, the ladder's flexibility almost always wins. Either way, the bigger question is whether your portfolio can sustain the withdrawals at all, at any age. That's what the calculator answers: it models the ladder explicitly, runs your real tax picture, and replays the plan against every market since 1928.
See if your early retirement plan holds upFor a worked early-retirement example, retire at 40 with $1M walks through the bridge years, and the early retirement taxes page covers how withdrawals are actually taxed once you're drawing them.
Not financial or tax advice. A SEPP is unforgiving and easy to break; consult a fee-only fiduciary CFP or tax professional before starting one. Rules and rates change.