Rule 72(t): Substantially Equal Periodic Payments Explained

Rule 72(t) is the mechanism people use to retire before 59½ without handing the IRS an extra 10% of every withdrawal. It works, it is entirely legitimate, and it is unusually unforgiving of mistakes. This guide covers the three distribution methods, the duration rule that catches people, and what actually happens if the schedule breaks.

What the rule does

Distributions from retirement accounts before age 59½ generally carry an additional 10% federal tax on top of ordinary income tax. Section 72(t) lists the exceptions, and the one that matters for early retirement is substantially equal periodic payments, usually shortened to SEPP.

Set up a SEPP correctly and you can draw from a traditional IRA or, if you have separated from service, a qualified employer plan, at any age without the penalty. The withdrawal penalty disappears. The income tax does not.

That distinction is worth sitting with. A 52-year-old taking $40,000 a year under a SEPP still reports $40,000 of ordinary income. The rule saves the $4,000 penalty, not the income tax on the distribution.

The three calculation methods

The IRS permits exactly three ways to compute the payment. All three start from an account balance and a life expectancy figure, and each produces a materially different number.

Required minimum distribution method

The account balance is divided by a life expectancy factor each year, recalculated annually. Because the calculation runs fresh every year, the payment moves with the account: it falls if the balance falls, rises if it grows.

This method generally produces the smallest initial payment of the three. Its advantage is that it cannot outrun the account — a market downturn reduces the required payment rather than accelerating depletion.

Fixed amortization method

The account balance is amortized over your life expectancy at a chosen interest rate, producing a level annual payment that does not change for the life of the schedule. The arithmetic is the same as a loan payment.

This is the most commonly used method because it typically produces a larger payment than the RMD approach and gives you a predictable number to plan around.

Fixed annuitization method

The account balance is divided by an annuity factor derived from an IRS mortality table and a chosen interest rate. Like fixed amortization, it produces a level payment that stays constant.

Results usually land close to the fixed amortization method. Which one produces more depends on the specific factors, and the calculation is worth running both ways.

The interest rate you are allowed to use

Both fixed methods require an interest rate assumption, and a higher rate produces a larger payment. The IRS caps it.

Under Notice 2022-6, the rate used may be any rate up to the greater of 5% or 120% of the federal mid-term rate for either of the two months preceding the month the distributions begin. The flat 5% floor was a meaningful change — under the prior guidance, the permitted rate tracked market rates alone, and during the low-rate years that produced painfully small payments.

Because the cap is tied to the two months before you start, the month you begin can change the payment. If rates are moving, that timing is worth checking rather than assuming.

The duration rule that catches people

Payments must continue for the longer of five years or until you reach age 59½.

Read that again, because the common misreading is "whichever comes first," and it is not.

A person starting at 50 must continue roughly nine and a half years, until 59½. A person starting at 57 must continue five full years, to age 62, passing 59½ along the way with no relief. The five-year clock is measured from the date of the first distribution, not by calendar year.

The awkward window is the mid-fifties. Starting a SEPP at 56 or 57 commits you past the age when the penalty would have expired anyway, which is frequently a reason not to start one at all.

What happens if you break it

This is the part that makes a SEPP a genuine commitment rather than a flexible strategy.

If the schedule is modified before the required period ends, the exception is disallowed retroactively. The 10% additional tax is assessed on every distribution taken under the schedule from the beginning, plus interest for the intervening years.

Someone eight years into a $40,000 annual SEPP who takes one extra withdrawal has not created a small problem in the current year. They have created a penalty on roughly $320,000 of prior distributions, with interest.

Modification includes taking more than the schedule, taking less, stopping, and in most cases rolling money into or out of the account funding the SEPP. Narrow exceptions exist for death, disability, and complete depletion of the account. Needing money is not one of them.

The IRS does permit one change: a one-time switch from either fixed method to the RMD method. This exists as relief for people whose fixed payment is draining an account faster than expected after a market decline. It can be used once, and it is one-directional.

The technique that makes SEPPs survivable

The single most useful move is to split the IRA before starting.

A SEPP applies to a specific account. If you need $30,000 a year and hold a $900,000 IRA, running the schedule on the whole balance produces a payment far larger than you need, and locks the entire account into the schedule.

Splitting into a smaller IRA sized to generate exactly the payment you need, and leaving the remainder in a separate untouched account, accomplishes two things. The SEPP payment matches the actual requirement. And the untouched IRA remains available for emergencies without modifying the schedule — the very thing that would otherwise trigger the retroactive penalty.

This has to be done before the first distribution. Moving money between accounts afterward is generally itself a modification.

Where annuities intersect with this

Two points of contact, both worth understanding.

A SEPP is not an annuity, though the fixed annuitization method borrows annuity mathematics. The account remains yours, invested as you choose, and it can be depleted. An annuity transfers longevity risk to an insurance company. These are different arrangements that happen to share a formula.

Separately, if the account funding your SEPP holds an annuity contract, the contract's own rules apply on top of the tax rules. Surrender charges and free-withdrawal limits do not care that your distribution is penalty-free for tax purposes. A schedule requiring $40,000 a year from a contract with a 10% free-withdrawal allowance on a $300,000 value works. The same schedule on a $200,000 value does not, and the surrender charges will consume the difference. Check the contract before you commit to the schedule.

Before you start one

Three questions worth answering honestly.

Can you live with this payment for the full required period? Not this year — every year until the longer of five years or 59½. The retroactive penalty makes this a genuine commitment.

Have you split the account? If the answer is no, you are locking your entire retirement balance into a schedule and leaving yourself no emergency reserve.

Have you accounted for the income tax? The distribution is taxable as ordinary income. If you need $40,000 to live on, the schedule needs to produce more than $40,000.

A SEPP spends retirement savings years earlier than planned, and the balance that remains at 59½ is what funds the decades after. Run the numbers with a tax professional before the first distribution. Once it starts, the flexibility is gone, and the IRS guidance that governs this is worth reading directly rather than in summary.

About the Author

Connor Cedro

Connor is the founder of Palm Wealth Capital, an independent retirement and annuity research firm based in Tampa, Florida. He holds a Finance degree (SMU '21) and an MBA ('25), and writes about annuities and retirement income planning with a focus on independent, jargon-free analysis.