Estimate your 72(t) SEPP distributions using all three IRS-approved methods: life expectancy, amortization, and annuitization. Compare annual payouts to find the best option for penalty-free early withdrawals before age 59½.
Section 72(t) of the Internal Revenue Code gives early retirees a way to access tax-deferred retirement accounts (IRAs, 401(k)s) before age 59½ without the standard 10% early-withdrawal penalty. The catch: you must take Substantially Equal Periodic Payments (SEPP) calculated under one of three IRS-approved methods, and you must continue those exact payments for five years OR until you reach age 59½, whichever is LONGER. Stop the payments early or modify the amount, and the penalty applies retroactively to every distribution you took, plus interest.
The three approved calculation methods (Notice 2022-6 updated the previous Revenue Ruling 2002-62) are: Life Expectancy (also called Required Minimum Distribution method, produces the smallest payments, can be recalculated annually), Amortization (fixed payment based on life expectancy and an interest rate, larger payments), and Annuitization (fixed payment using an annuity factor, similar size to Amortization). Most users choose Amortization or Annuitization for the larger payments; Life Expectancy is useful when you need flexibility to reduce payments year to year.
This calculator computes all three methods so you can compare. SEPP is most commonly used by early retirees in their 50s who want to bridge the gap between leaving work and reaching 59½ (when penalty-free withdrawals from retirement accounts become available without restriction). It's a powerful but inflexible tool — once you start, you're locked in for the longer of 5 years or until 59½. Use the calculator to size the right starting balance and understand the lock-in commitment before starting.
$700,000 IRA balance, age 52, planning to retire and need $43,000/year in pre-tax income from the IRA until age 59½ (then unrestricted withdrawals). Required SEPP duration: 7.5 years (until 59½). At 5% interest rate (post-2022 Single Life table): Amortization method: $700,000 × [0.05 × 1.05^34.3] / [1.05^34.3 − 1] ≈ $43,100/year (life expectancy at 52: 34.3) Annuitization: similar Life expectancy: $700,000 / 34.3 ≈ $20,400/year (recalculates annually) If you need $43,000/year, Amortization is the right method. You'll take $43,100/year for 7.5 years until 59.5, total: about $323,000 over the SEPP period. After SEPP ends, the remaining balance is available without restriction.
Same age 52, $700,000 balance, but federal AFR is 5% (so 120% of AFR = 6%). Amortization at 6%: $700,000 × [0.06 × 1.06^34.3] / [1.06^34.3 − 1] ≈ $48,600/year The 100 basis point increase in allowed interest rate raises the annual SEPP payment by about $5,500/year. Higher AFR environments support meaningfully larger SEPP payments for the same balance — useful when current income needs are higher.
$500,000 IRA at age 53. Started Amortization SEPP at 5% rate: $30,000/year. After year 3, the IRA balance has dropped to $380,000 due to market downturn plus distributions. Continuing $30,000 fixed could deplete the account quickly. IRS allows a one-time switch FROM Amortization or Annuitization TO the Life Expectancy method. This drops the year-4 distribution to ~$380,000 / 30.6 (life expectancy at 56, post-2022 table) ≈ $12,400/year — a significant reduction. The switch preserves the SEPP's tax-favored status. Useful as a "release valve" when markets are unfavorable to fixed payments. Cannot switch in the opposite direction (Life → Amortization).
Use this calculator when planning early retirement that requires accessing tax-deferred retirement accounts before age 59½, when modeling FIRE-style strategies that bridge from work to traditional retirement age, or when evaluating whether existing retirement savings can support a desired early-retirement income.
SEPP is most useful when: (1) you have substantial IRA or 401(k) balance, (2) you have insufficient taxable assets to bridge to 59½, (3) you can commit to fixed payments for at least 5 years without modification, and (4) the required payment amount aligns reasonably with your income needs.
SEPP is less useful when: you have other taxable assets that can fund early retirement without locking in fixed retirement-account distributions, you might need flexibility to change distribution amounts, your retirement-account balance is small enough that SEPP would deplete it before traditional retirement, or your time to 59½ is short enough (under 2 years) that the standard 10% penalty is small.
Pair this with the IRA calculator (the source account analysis), the retirement-savings calculator (long-term projection including post-SEPP years), the FIRE calculator (the broader early-retirement framework), and the RMD calculator (which uses similar life expectancy tables for required distributions after age 73).
Important: SEPP is a powerful but unforgiving tool. The retroactive penalty for modifying payments before the duration ends can wipe out years of careful planning. Many financial planners recommend SEPP only when other options are exhausted, and only with extensive professional advice. Always coordinate with a CPA or specialized advisor before starting — small calculation errors or administrative mistakes can trigger the penalty.
One mitigation: split a large IRA into two separate IRAs before starting SEPP, using only one for the SEPP. The other IRA remains available for unexpected lump-sum needs without disrupting the SEPP. This is one of the most common practical structures for sophisticated SEPP users.
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Max 120% of mid-term AFR
Life Expectancy (Annual)
$13,812
Amortization (Annual)
$28,239
Annuitization (Annual)
$28,239
Amortization (Monthly)
$2,353
| Year | Age | Life Expect. | Amortization | Annuitization |
|---|---|---|---|---|
| 1 | 50 | $13,812.00 | $28,239.00 | $28,239.00 |
| 2 | 51 | $14,410.00 | $28,239.00 | $28,239.00 |
| 3 | 52 | $15,078.00 | $28,239.00 | $28,239.00 |
| 4 | 53 | $15,729.00 | $28,239.00 | $28,239.00 |
| 5 | 54 | $16,408.00 | $28,239.00 | $28,239.00 |
| 6 | 55 | $17,116.00 | $28,239.00 | $28,239.00 |
| 7 | 56 | $17,911.00 | $28,239.00 | $28,239.00 |
| 8 | 57 | $18,619.00 | $28,239.00 | $28,239.00 |
| 9 | 58 | $19,418.00 | $28,239.00 | $28,239.00 |
| 10 | 59 | $20,251.00 | $28,239.00 | $28,239.00 |