72(t) SEPP Calculator (2026)

Substantially Equal Periodic Payments (SEPP)

Normally, IRA and plan withdrawals before age 59½ trigger a 10% additional tax on taxable amounts. IRC §72(t) allows exceptions—including SEPP programs that pay substantially equal periodic payments over your life expectancy or for a fixed period of at least five years, whichever is longer, until age 59½ or five years complete.

Warning: If you modify the payment series before the end of the SEPP period, the 10% penalty can apply retroactively to all prior SEPP distributions, plus interest. Changing amount, frequency, or stopping early is dangerous. This calculator is not an IRS safe-harbor determination—consult a tax professional before starting SEPP.

Amortization method illustration

One IRS-approved method amortizes account balance over life expectancy using a reasonable interest rate you enter. Payment = balance × rate ÷ (1 − (1 + rate)^−n) in standard amortization form. The IRS also publishes required interest rate guidance and life expectancy tables that may differ from simplified inputs here.

How to use the form

Enter account balance, your age (for context), life expectancy years, and interest rate. The tool outputs an approximate annual payment. Compare to RMD-style divisors in the RMD calculator only for intuition—SEPP and RMD rules differ.

Alternatives to SEPP

Other §72(t) exceptions include disability, certain medical expenses, and separation from service after 55 in some plans. See the early withdrawal penalty calculator for penalty on non-SEPP early distributions.

Common mistakes

• Starting SEPP without committing to the full duration
• Commingling SEPP IRA with non-SEPP contributions
• Using wrong IRS table or interest rate
• Assuming 401(k) SEPP is as flexible as IRA SEPP while still employed

Related tools

Early withdrawal penalty calculator, inherited IRA calculator, Roth conversion calculator.

Sources

IRC §72(t); IRS Notice 2022-6 (interest rate guidance). Educational amortization only.

Documentation and recordkeeping

Keep copies of forms, notices, and account statements that support numbers you enter. IRS audits and state reviews often start with mismatches between third-party reporting and what you claimed. Reconcile calculator outputs to official worksheets before filing.

When to revisit your estimate

Life changes mid-year—marriage, divorce, a move, bonus income, or a new job—can shift brackets, credits, and phaseouts. Rerun the tool when those events occur rather than relying on a January estimate through December.

State and local taxes

This page focuses on federal rules unless noted. Many states piggyback on federal AGI or MAGI definitions but apply their own rates and credits. Pair federal estimates with the state income tax calculator when residency matters.

Professional guidance

Complex returns—AMT, NIIT, multi-state income, business ownership, or large conversions—benefit from a CPA or enrolled agent who can sign the return. Calculators here show the math chain; they do not replace personalized advice or e-file validation.

Methodology on this site

Core 2026 federal brackets, deductions, and payroll limits follow IRS Rev. Proc. 2025-32, SSA wage-base announcements, and CMS Medicare premium tables where applicable. We show assumptions in the result panel when a rule is simplified for education.

Quarterly check-ins

Retirees and self-employed filers should revisit estimates after each quarter when investment income, required distributions, or business profit shifts. Waiting until December limits your options for withholding adjustments and timely estimated payments.

Documentation and recordkeeping

Keep copies of forms, notices, and account statements that support numbers you enter. IRS audits and state reviews often start with mismatches between third-party reporting and what you claimed. Reconcile calculator outputs to official worksheets before filing.

When to revisit your estimate

Life changes mid-year—marriage, divorce, a move, bonus income, or a new job—can shift brackets, credits, and phaseouts. Rerun the tool when those events occur rather than relying on a January estimate through December.

State and local taxes

This page focuses on federal rules unless noted. Many states piggyback on federal AGI or MAGI definitions but apply their own rates and credits. Pair federal estimates with the state income tax calculator when residency matters.

Professional guidance

Complex returns—AMT, NIIT, multi-state income, business ownership, or large conversions—benefit from a CPA or enrolled agent who can sign the return. Calculators here show the math chain; they do not replace personalized advice or e-file validation.

Methodology on this site

Core 2026 federal brackets, deductions, and payroll limits follow IRS Rev. Proc. 2025-32, SSA wage-base announcements, and CMS Medicare premium tables where applicable. We show assumptions in the result panel when a rule is simplified for education.

Quarterly check-ins

Retirees and self-employed filers should revisit estimates after each quarter when investment income, required distributions, or business profit shifts. Waiting until December limits your options for withholding adjustments and timely estimated payments.

Reading official publications

IRS Publications and Instructions often walk through worksheets line by line. When our simplified path differs from a form worksheet, trust the form for filing and use this page for directional planning only.

Calculator directory

Browse related tools from the calculator directory when your question spans credits, payroll, retirement, and investment tax in the same year.

Withholding versus liability

Paycheck withholding and estimated tax payments are cash-flow tools. They are not the same as annual tax liability computed on the return. Use the W-4 withholding calculator and quarterly estimated tax calculator when you need payment timing, not just liability.

Standard deduction reminder

The 2026 standard deduction is $16,100 for single and married filing separately filers, $24,150 for head of household, and $32,200 for married filing jointly (IRS Rev. Proc. 2025-32). Itemized filers must beat those amounts on Schedule A for itemizing to win.

Documentation and recordkeeping

Keep copies of forms, notices, and account statements that support numbers you enter. IRS audits and state reviews often start with mismatches between third-party reporting and what you claimed. Reconcile calculator outputs to official worksheets before filing.