Retirement Withdrawal Strategy for Wealthy Families

A $5M portfolio at 4% generates $200,000 in annual income — but up to $160,000 could be fully taxable at ordinary rates if it sits in a traditional IRA, while the same dollar from a Roth is tax-free. The $2M–$20M bracket has five account types taxed differently, mandatory income starting in your 70s that you cannot turn off, and Medicare surcharges triggered by investment income. Which account you tap first — and when — matters more than the withdrawal rate itself.

The five-account problem

Most wealthy families accumulate retirement assets across multiple buckets, each taxed differently at withdrawal:

Managing these buckets inefficiently — drawing from a Roth in a low-income year when you could pull from the traditional IRA at 12%, or letting RMDs force $150,000/year into the 24% bracket because you never converted — can cost hundreds of thousands of dollars over a 25-year retirement.

Tax-efficient withdrawal order — and when to break it

The conventional sequence for tax-efficient drawdown:

1. Taxable brokerage first. Long-term capital gains rates (0%–20% + 3.8% NIIT) are almost always lower than ordinary income rates. In years where your taxable income is below $100,800 MFJ, you can recognize long-term gains at 0% federal — tax-free liquidation of your brokerage account.³
2. Traditional IRA / 401(k) second. Defer ordinary-income recognition as long as possible — but don't defer so long that RMDs force large amounts into high brackets involuntarily.
3. Roth IRA last. Let tax-free growth compound as long as possible. The longer you defer Roth withdrawals, the more powerful the estate benefit (heirs inherit a tax-free account).

The Roth conversion window

Between retirement and the start of Social Security plus RMDs, there is often a multi-year window where your income drops to its lowest level since your 30s. This window is the most tax-efficient conversion opportunity most people will ever see.

Example: A couple retires at 62 with a $4M traditional IRA, $2M brokerage, and $500K Roth. They defer Social Security to 70. For eight years (ages 62–69), their only income is qualified dividends and modest capital gains — say $70,000 in taxable income. After the $32,200 MFJ standard deduction, that leaves $37,800 in taxable income — well inside the 12% bracket (which tops out at $100,800 MFJ in 2026).³

They can convert up to $63,000/year from traditional to Roth at 12%, or up to $173,600/year before hitting the 24% bracket at $211,400. Every dollar converted now is a dollar fewer that will appear as a forced RMD in their 70s — at potentially higher rates. Over 8 years, $173,000/year in conversions removes $1.4M from the RMD-subject traditional balance.

The window closes when Social Security starts (85% of benefits become taxable at this income level) and RMDs begin (forced income you cannot control). See our full Roth conversion strategy guide → for bracket-by-bracket math and an interactive calculator.

RMD planning: the forced income problem

Required Minimum Distributions are the IRS's way of ensuring tax-deferred accounts are eventually taxed. Under SECURE 2.0, RMDs begin at:¹

• Age 73 — if born between 1951 and 1959
• Age 75 — if born in 1960 or later

The annual RMD is your prior December 31 account balance divided by an IRS Uniform Lifetime Table factor. At age 73, that divisor is 26.5; at age 80, it falls to 20.2.⁴ For a $3M traditional IRA:

• Age 73 RMD: $3,000,000 ÷ 26.5 = $113,208
• Age 80 RMD (if balance remains at $3M): $3,000,000 ÷ 20.2 = $148,515

Layer that on top of Social Security, dividends, and rental income, and a couple that felt "tax-efficient" during their 60s suddenly finds themselves in the 32% bracket with $14,000/year in Medicare surcharges on top of it.

Two structural responses:

• Roth conversions before RMDs start — reduces the traditional balance subject to RMDs, permanently lowering future forced income
• Qualified Charitable Distributions (QCDs) at age 70½+ — transfers up to $111,000/person/year ($222,000/couple) directly from an IRA to charity. Counts toward the RMD but is excluded from gross income entirely — never appears in MAGI.⁵ QCDs cannot go to a Donor Advised Fund.

Roth 401(k) accounts are exempt from lifetime RMDs starting 2024 (SECURE 2.0 §325). If your employer plan has an after-tax or Roth 401(k) component, those balances can grow through your lifetime without forced distributions — a structural advantage worth preserving if you're still accumulating.

IRMAA: how withdrawal levels affect Medicare costs

Every dollar of IRA withdrawal, Roth conversion, or capital gain adds to your MAGI — which Medicare uses to set premium surcharges with a two-year lookback. A large traditional IRA withdrawal in 2026 raises your 2028 Medicare costs. For a married couple, IRMAA surcharges begin above $212,000 MAGI and can add $3,500–$13,900/year per couple depending on the tier.⁶

This creates a practical ceiling on how much to convert or withdraw in any given year: a $50,000 Roth conversion that tips your MAGI across an IRMAA tier boundary can cost nearly as much in Medicare surcharges (spread over two years) as it saves in future income tax. Staying just below a tier threshold is often worth more than maximizing the conversion amount. See our full IRMAA planning guide → for the complete 2026 tier table and an interactive calculator.

Sequence-of-returns risk

Sequence-of-returns risk is the outsized damage that poor market returns in early retirement inflict compared to identical poor returns later. Even if two 30-year periods have the same average return, the one with losses in years 1–5 produces far worse outcomes because ongoing withdrawals lock in the losses before recovery.

Why it hits $2M–$20M households differently: At $5M, a 20% correction reduces the portfolio to $4M before any withdrawal. If you withdraw $200,000 (4%) on the $4M post-crash value, you're now at $3.8M. A 20% recovery restores it only to $4.56M — a permanent shortfall even if markets recover fully. The larger the portfolio, the larger the absolute dollar damage, though percentage-wise the math is the same across all wealth levels.

Practical mitigations:

• Cash / short-bond reserve: 2–3 years of spending in stable assets. When equities fall, draw from the reserve rather than selling at a loss.
• Dynamic spending rules: Reduce discretionary spending 10–15% in down-market years. At $5M, cutting $20,000/year in a bad market preserves compounding for the recovery.
• Rising equity glidepath: Start retirement with a more conservative allocation (60/40), then gradually increase equity exposure through your 70s as human-capital risk (job loss, disability) fades. Counterintuitive, but reduces sequence risk in the most vulnerable early years.

Portfolio longevity calculator

Enter your starting portfolio, annual spending in today's dollars, expected return, and inflation. The calculator shows balance year-by-year — and whether the portfolio survives 40 years.

Deterministic model — does not simulate market volatility or sequence-of-returns risk. Actual results vary based on return sequence, taxes, RMD requirements, Social Security income, and state taxes. This is a projection tool, not financial advice.

Sustainable withdrawal rates at $2M–$20M

The 4% rule — the guideline that a 4% initial withdrawal rate has historically survived 30-year retirements — was derived from U.S. market data by financial planner William Bengen in 1994. At $2M–$20M, it remains a reasonable starting point with several caveats specific to this wealth tier:

At $2M–$20M, the more relevant question is usually not "will I run out of money?" but "how do I minimize the taxes my heirs will inherit?" A traditional IRA passed to non-spouse heirs must be emptied within 10 years; for a 50-year-old heir still in peak earning years, that's a large annual ordinary income tax bill on your behalf. Roth conversions during your lifetime — even at 24% — are often cheaper than the heir's effective rate on the inherited traditional IRA.

See also: Roth Conversion Strategy → | IRMAA Planning and Medicare Surcharges → | Asset Location Optimizer → | Social Security Optimization → | Estate Planning for Wealthy Families →

Sources

1. IRS — Retirement Topics: Required Minimum Distributions. RMD start age: 73 for individuals born 1951–1959; 75 for individuals born 1960 or later (SECURE 2.0 Act, Div. T §107, P.L. 117-328). Roth 401(k) and Roth TSP accounts exempt from owner's lifetime RMDs beginning January 1, 2024 (SECURE 2.0 §325). Verified May 2026.
2. SSA — Benefits Planner: Income Taxes and Your Social Security. Up to 85% of Social Security benefits are included in federal gross income when combined income (AGI + nontaxable interest + ½ SS benefit) exceeds $44,000 for married couples filing jointly. Threshold not indexed for inflation.
3. IRS Rev. Proc. 2025-32 — 2026 Inflation Adjustments. MFJ ordinary income brackets: 10% to $24,800; 12% to $100,800; 22% to $211,400; 24% to $403,550; 32% to $512,450; 35% to $768,700; 37% above $768,700. Standard deduction MFJ: $32,200. LTCG 0% rate applies for taxable income at or below $100,800 MFJ (aligns with top of 12% bracket per Rev. Proc. 2025-32).
4. IRS Publication 590-B — Distributions from Individual Retirement Arrangements. Uniform Lifetime Table (effective 2022 per T.D. 9902): age 73 divisor 26.5; age 75 divisor 24.6; age 80 divisor 20.2. Used for account-owner RMD calculations when the sole beneficiary is not a spouse more than 10 years younger.
5. IRS — Retirement Plan Limits for 2026. Qualified Charitable Distribution (QCD) annual limit: $111,000 per individual for 2026 (indexed under SECURE 2.0 §307). QCDs satisfy RMD requirements without being included in gross income; they must go directly to a qualifying public charity and cannot be directed to a Donor Advised Fund. Verified May 2026.
6. Medicare.gov — Part B costs and IRMAA surcharges. 2026 standard Part B premium: $202.90/month. IRMAA surcharges for married filing jointly begin above $212,000 MAGI (based on 2024 reported income). Surcharges range from $81.20/person/month (lowest tier) to $487.00/person/month (highest tier) above the standard premium. Complete tier table and strategies at our IRMAA planning guide. Verified May 2026.

Tax brackets, RMD rules, QCD limits, and IRMAA thresholds verified against IRS Rev. Proc. 2025-32, IRS Publication 590-B, and SSA/Medicare sources, May 2026. Withdrawal rate research attributed to William Bengen, "Determining Withdrawal Rates Using Historical Data," Journal of Financial Planning (1994). This page is educational and does not constitute financial, tax, or legal advice.