What a $4 Million Nest Egg at 67 Actually Provides in Real Annual Spending

The headline number looks reassuring. A couple has saved $4 million dollars by age 67. If they start pulling 3.8% off the portfolio, they’ll have $152,000 coming in, plus $58,000 from Social Security. It sounds like a lot of money, but the lifestyle math doesn’t always add up.

Reddit’s r/retirement users surface this scenario constantly. People are at the door of retirement who have hit Fidelity’s 10x salary benchmark at age 67. They assume the spending math will just work. It does, but at a number meaningfully below what the gross withdrawal implies.

A Case Study

• Household: Married filing jointly (MFJ), both age 67, both on Medicare.
• Portfolio: $2.6M traditional Individual Retirement Account (IRA), $700K Roth IRA, $700K taxable brokerage.
• Guaranteed income: $58,000 combined Social Security.
• Plan: 3.8% gross withdrawal, roughly $152,000.
• Core risk: The gap between gross withdrawal and real spending, compounded by required minimum distributions (RMDs) starting at 73.

Assume the $152,000 withdrawal is pulled proportionally: about $100,000 from the traditional IRA (ordinary income), $27,000 from the Roth (tax-free), and $25,000 from the taxable account, where roughly $15,000 is qualified dividends and long-term gains. Up to 85% of Social Security, or about $49,000, is taxable at this income level.

Ordinary taxable income lands near $117,000 after the 2026 MFJ standard deduction of $32,200. Running that through the 2026 brackets (10% to $24,800, 12% to $100,800, 22% above) produces roughly $15,200 of federal ordinary tax. Add about $2,850 on qualified income, and federal tax is near $18,000. State tax at 5% on roughly $163,000 of adjusted gross income adds about $8,150.

Modified adjusted gross income (MAGI) lands around $163,000, comfortably under the $218,000 MFJ threshold where Income-Related Monthly Adjustment Amount (IRMAA) surcharges begin. So this couple pays the standard 2026 Part B premium of about $203 each, plus Part D, for roughly $5,800 a year combined. Out-of-pocket healthcare (Medigap, dental, drugs not covered) runs another $7,000 conservatively, and a self-funded long-term care (LTC) reserve at $12,000 a year is reasonable for a couple choosing not to buy a policy.

Subtract it all: $210,000 gross, minus roughly $26,000 in taxes, $5,800 in Medicare premiums, $7,000 in healthcare out-of-pocket, and $12,000 set aside for LTC. Real spending power lands near $159,000 a year, or about $13,250 a month.

Three Moves That Could Change the Equation

1. Use the pre-RMD Roth conversion window aggressively. Between 67 and 73, this couple sits in the 12% to 22% federal bracket with room to spare. Converting $40,000 to $60,000 a year from the traditional IRA to the Roth, while staying under the $218,000 IRMAA cliff, shrinks the $2.6M traditional balance before RMDs force the issue. Every dollar moved now at 22% is a dollar that does not get taxed at 24% or higher under future RMDs stacked on Social Security.
2. Calibrate withdrawals around IRMAA tiers, not just brackets. The first IRMAA tier adds about $81 per person monthly on Part B and about $15 on Part D, roughly $2,300 a year for the couple, for crossing $218,000 in MAGI by a single dollar. Pulling that incremental dollar from the Roth instead of the traditional IRA is often the cheapest tax move available in retirement.
3. Adopt Guyton-Klinger guardrails instead of a static 3.8%. With the 10-year Treasury near 4.5% and core inflation still drifting up, a fixed withdrawal rate ignores sequence risk. Guardrails raise spending after strong years and trim it after losing years, which historically supports starting rates closer to 4.5% to 5% without breaking the plan.

Before adjusting spending, run the conversion math. The window between 67 and the RMD age of 73 is short, and the traditional IRA balance is the single biggest tax liability on the balance sheet. Second, model MAGI to the dollar before December each year; the IRMAA cliff is the most expensive accidental tax in retirement. Third, the real lifestyle number behind a $152,000 withdrawal, after taxes and healthcare and an honest LTC reserve, is closer to $13,250 a month. Budgeting against the smaller figure is what keeps the plan intact through age 93.