How is 72(t) different from Rule of 55?

Rule of 55: age-55-specific, only applies to current employer's 401(k), no commitment. 72(t) SEPP: any age, applies to IRAs, requires 5-year or until-59½ commitment. 72(t) is more flexible on age but much more restrictive on commitment.

Can I still use 72(t) with today's interest rates?

Yes, but the amortization and annuitization methods produce lower withdrawal amounts when interest rates are low, because the fixed payments depend on a 'reasonable interest rate' published by the IRS (120% of the Federal Mid-Term AFR). At current AFR levels, the payments are workable but modest.

What happens if I break the 72(t) commitment?

All withdrawals taken from the 72(t) account retroactively become subject to the 10% penalty, plus interest. It's a significant penalty — often tens of thousands of dollars. Break only in extreme emergencies.

Should I prefer Roth conversion ladder over 72(t)?

For most early retirees with 5+ years before needing funds, Roth conversion ladder is more flexible and tax-efficient. 72(t) is better if you need immediate cash flow and have little in Roth or taxable accounts. Our Roth Planner tool models both side-by-side.

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Rule 72(t) / SEPP: Accessing Retirement Funds at Any Age Without Penalty

IRS Rule 72(t), also called Substantially Equal Periodic Payments (SEPP), lets you withdraw from an IRA at any age without the 10% penalty — as long as you commit to a specific withdrawal schedule for 5 years or until 59½, whichever is longer. It's the nuclear option for pre-55 FIRE.

Earliest age

Any

Commitment

5 years or until 59½

Methods

RMD / Amortization / Annuitization

IRS section

§72(t)(2)(A)(iv)

How It Works

Rule 72(t), technically Section 72(t)(2)(A)(iv), lets you take 'substantially equal periodic payments' from an IRA (or certain 401(k) plans) at any age without the 10% penalty. You commit to a fixed withdrawal schedule calculated under one of three IRS-approved methods: (1) Required Minimum Distribution method — recalculated annually, typically the smallest withdrawal amounts; (2) Amortization method — fixed annual payment based on life expectancy and an interest rate; (3) Annuitization method — fixed annual payment based on an annuity factor table. Once you choose a method and start, you must continue for 5 years or until age 59½, whichever is longer. Violating the schedule triggers all the penalties plus interest retroactively. Because of the commitment, 72(t) is usually a last-resort option for retirees pre-55 who have no other bridge.

Where It Came From

Section 72(t) has existed since the original IRA legislation (1974) as a safety valve for people needing retirement-account access before traditional retirement age. The three calculation methods were formalized by IRS Notice 89-25 and updated by Revenue Ruling 2002-62. For decades, 72(t) was mostly used by people forced into early retirement by disability, not by FIRE adherents. The FIRE movement adopted 72(t) in the 2010s as a bridge strategy for very-early retirees (age 40-50) who didn't have enough in taxable accounts or Roth principal to cover the gap to 59½.

Where It Breaks

Major drawbacks. First: the commitment is ironclad. If you start 72(t) at 42 and change your mind at 45, you owe all the penalties back retroactively — and they're calculated based on every withdrawal taken, plus interest. It's a one-way door. Second: the withdrawal amount is determined by the calculation method, not your actual needs. If markets crash and you need less, or if you need more due to an emergency, you can't adjust. A 2004 IRS ruling (Rev. Rul. 2002-62) did allow a one-time method change under limited circumstances. Third: the calculated amount might be significantly less than you need, especially with low interest rates. A $500K IRA at a 50-year-old might only support $18-22K/year under 72(t) — insufficient for most FIRE budgets. Fourth: 72(t) is account-specific. You can split your IRA into a smaller one dedicated to 72(t) and keep the rest untouched, but this requires careful planning. Fifth: taxes still apply — 72(t) only waives the 10% penalty, not ordinary income tax on withdrawals.

Worked Examples

42-year-old FIRE bridge

Setup: $500K IRA at age 42, targeting ~$20K/year for 18 years to 59½

Amortization method at ~4% interest rate: ~$22K/year fixed. Committed for 17.5 years.

Split-IRA strategy

Setup: $1M IRA, want $35K/year from 72(t) starting at 48

Split into a $700K sub-IRA for 72(t) (generating ~$35K/year) and $300K remaining untouched until 59½.

Method change emergency

Setup: Started 72(t) amortization at 45, markets crash, want to reduce withdrawals

One-time method change to RMD method allowed (Rev. Rul. 2002-62). Reduces required withdrawal but still locks in new method for remainder of period.

Run Your Own Numbers

Put the math behind Rule 72(t) / SEPP to work with your own portfolio, spending, and time horizon.

Open Roth Conversion Planner

Research Citations

“IRS §72(t)(2)(A)(iv) exception” — Internal Revenue Code
“Three calculation methods (RMD, Amortization, Annuitization)” — IRS Notice 89-25; Revenue Ruling 2002-62
“One-time method change allowed” — Revenue Ruling 2002-62

Related Strategies

US TAX MOVE

The Rule of 55

ROTH STRATEGY

The Roth Conversion Ladder

US TAX MOVE

Mega Backdoor Roth

SAFE WITHDRAWAL RATE

The 4% Rule

Sources

IRS Publication 590-B — Distributions from IRAs (accessed 2026-04-17)
Bogleheads Wiki — Safe Withdrawal Rates (accessed 2026-04-17)

Last verified: 2026-04-17

Educational content only — not individual investment advice. Retirement planning involves significant uncertainty. Consult a qualified fiduciary advisor before acting on any strategy.