S&P 500 · Long-term gains · Inflation-adjusted
2026 federal & state tax brackets
Cash buffer · sequence-of-returns shield
Stress-tested · 68 historical sequences
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Zero Risk Retirement Calculator

Calculate when you can securely retire by preserving your principal value. No drawdown, no running out of money.

How this works: This calculator is built around one goal: a secure retirement where your principal grows or stays intact, not one where you slowly draw it down. That means a conservative withdrawal rate, a cash buffer for sequence-of-returns protection, real 2026 tax brackets, and inflation-adjusted S&P returns — plus a historical stress test that shows the realistic range of retirement ages across every market sequence since 1928, not just the average case. This methodology aims for a zero risk retirement.
Under 1 yr
Too thin — vulnerable to forced selling in a downturn
1–2 yrs
Covers short corrections only
2–3 yrs ★
3+ yrs
Safe but idle — by 5 yrs the drag hurts
Portfolio balances
Held separately as a reserve — it cushions your retirement but doesn't grow toward your target, so it won't change your retirement age. To count toward your target, move it to brokerage or 401k.
Your situation
earliest retirement age
target portfolio
monthly spendable
401k at 59½
Gross withdrawal
per year
Total tax burden
fed + state
Dividends (illustrative)
~1.4% yield
(See Additional Details below)
Annual income breakdown at retirement
Gross withdrawal (% of portfolio)
Federal capital-gains tax
State tax
Health insurance
Net spendable
Brokerage growth toward target
Additional Details
Asset assumption: brokerage and 401k are assumed to be invested in the S&P 500 or a similar broad-market index fund, returning ~7% real per year on average (inflation-adjusted). If your holdings differ significantly (heavy bond allocation, target-date fund, individual stocks), adjust the expected real return accordingly.
Long-term capital gains — profits from investments held over 1 year — are taxed at preferential federal rates (0% or 15% for most retirees), which is why selling from a brokerage account is so tax-efficient. Some states ignore this preference and tax gains as ordinary income; California and New York are the most common high-tax cases, each with their own progressive rates.
Guides: How this calculator works · Safe withdrawal rates · Sequence-of-returns risk · Early-retirement taxes · Roth conversion ladder · Health insurance before 65
Portable prompt — paste into any AI

This prompt includes all your numbers and the full methodology. Paste it into ChatGPT, Gemini, or any other AI for a second opinion.

Not financial advice. Consult a fee-only fiduciary CFP for personalized guidance. Tax figures use 2026 brackets.