What is the 72(t) Rule (SEPP)?

The 72(t) rule, often written 72t or Rule 72(t), lets you withdraw money from an IRA or employer retirement plan before age 59.5 without owing the usual 10% early-withdrawal penalty, as long as you take it as Substantially Equal Periodic Payments (SEPP). In exchange, you commit to a series of payments calculated under an IRS-approved method, for a defined number of years. Each of those payments is a 72(t) distribution.

The name comes from Section 72(t) of the Internal Revenue Code (IRC), which carves out this exception to the penalty. It’s one of the few ways to tap an IRA early without being penalized, which makes it a bridge for people who retire well before 59.5 and need income from money that would otherwise be locked away. The withdrawals are still taxed as ordinary income; only the 10% penalty is avoided.

72(t) Distribution Rules

Once you start a SEPP, you have to keep taking the calculated payments for the longer of five years or until you reach age 59.5. Someone who starts at 50 continues until 59.5, nearly a decade. Someone who starts at 57 continues until 62, because the five-year period is the longer one. Stopping early, changing the amount, or taking an extra withdrawal generally busts the plan and triggers penalties, covered below.

You can set up a 72(t) from a traditional IRA at any age. From an employer plan like a 401(k), you generally have to have separated from service with that employer first; running the SEPP from an IRA avoids that requirement. Because the payment size depends on the account balance, one tactic is to split a large IRA into two: you run the SEPP on one, sized to produce the income you need, and leave the other untouched and available for emergencies.

72(t) Calculator: How SEPP Payments Are Calculated

The IRS recognizes three methods, and your choice sets how large the annual payment is:

• Required minimum distribution method. Divides the account balance by a life-expectancy factor each year. The payment recalculates annually with the balance, so it moves up and down with the account, and it produces the smallest starting payment of the three.
• Fixed amortization method. Amortizes the balance over your life expectancy at a chosen interest rate, producing a level payment that stays the same for the whole term.
• Fixed annuitization method. Divides the balance by an annuity factor drawn from IRS mortality tables and an interest rate, also producing a level payment.

For the two fixed methods, IRS Notice 2022-6 lets you use any interest rate up to the greater of 5% or 120% of the federal mid-term rate for either of the two months immediately before the month your distributions begin. A higher rate allows a larger payment, so the rule effectively caps how much you can pull. The RMD method doesn’t use a chosen rate at all.

Take a 55-year-old with a $500,000 IRA. The IRS Single Life Table gives a life expectancy of 31.6 years at that age, and the RMD method divides the balance by it:

RMD Method Payment = Account Balance / Life Expectancy

$500,000 / 31.6 = about $15,800 in the first year, recalculated every year with the new balance and the next life-expectancy factor.

The fixed amortization method works like a loan payment, with r as the interest rate and n as the life expectancy:

Fixed Amortization Payment = Account Balance x r / (1 - (1 + r)^-n)

At 5% over 31.6 years, the same $500,000 supports about $31,800 a year, held level for the term and roughly double the RMD method’s starting payment. Fixed annuitization needs an annuity factor from the IRS mortality table; in the IRS’s own example of a 50-year-old with $400,000 at a 4% rate, it comes out a little above amortization ($22,030 against $21,102, with the RMD method at $11,050).

The exact figure depends on the life-expectancy table (Notice 2022-6 also allows the Uniform Lifetime and Joint and Last Survivor tables), the interest rate, and the account valuation date you choose, so run the numbers with your actual inputs before committing.

One piece of flexibility is built in: you’re allowed a single, one-time switch from either fixed method to the RMD method without busting the plan. It’s the escape valve when a falling balance makes the fixed payment too large to sustain.

What Happens If You Modify a 72(t)

This is where 72(t) earns its reputation for rigidity. If you change the payment amount, take an extra distribution, add money to the account, or stop before the required period ends, the IRS treats it as a modification. A transfer or rollover can count as one too, depending on the account type and how the payments continue, so check before moving an account that has a SEPP running. The 10% penalty you had avoided is applied retroactively to the distributions you took before age 59.5, plus interest. Death and disability are the main exceptions: if payments change or stop because you die or become disabled, the statute doesn’t treat it as a modification, and the retroactive penalty doesn’t apply. The one-time switch to the RMD method isn’t a modification either.

That retroactive clawback is why a 72(t) is a commitment rather than a convenience, and why the payment has to work across the entire term before you start. Turning on 72(t) distributions for an account in ProjectionLab compares the RMD and fixed amortization methods against no SEPP on lifetime taxes and legacy.

72(t) vs. the Rule of 55: What’s the Difference?

The Rule of 55 is the other main way to reach retirement money penalty-free before 59.5, and it’s simpler when it applies.

If you’re leaving a job in or after the year you turn 55 and the money is in that employer’s plan, the Rule of 55 is simpler: no fixed schedule and no clawback risk. A 72(t) earns its keep when you leave before that year, or when your savings sit in an IRA that the Rule of 55 can’t reach.

Frequently Asked Questions

What interest rate can I use for a 72(t)? For the fixed amortization and annuitization methods, IRS Notice 2022-6 allows any rate up to the greater of 5% or 120% of the federal mid-term rate for either of the two months immediately before the month distributions begin. A higher rate produces a larger payment, so this sets the practical ceiling on how much you can withdraw. The RMD method doesn’t use a chosen rate.

Can I stop a 72(t) distribution early? Not without a cost. You have to continue payments for the longer of five years or until age 59.5. Stopping sooner busts the plan, and the 10% penalty is applied retroactively to the distributions you took before 59.5, plus interest.

Can I set up a 72(t) from a 401(k)? Usually only after you’ve separated from service with that employer. While you’re still working there, a 401(k) generally won’t permit it, so the alternatives are waiting until you leave or running the SEPP from an IRA.

What happens if I take an extra withdrawal during a 72(t)? Any distribution beyond the calculated amount counts as a modification, which busts the plan and triggers the retroactive penalty and interest. Because a 72(t) is that unforgiving, it’s usually sized carefully or run on only part of your savings.