How Top Executives Structure Their 401(k) to Pay Zero Taxes in Retirement
How Top Executives Structure Their 401(k) to Pay Zero Taxes in Retirement
David BerenThu, April 2, 2026 at 10:30 AM UTC
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ANDRANIK HAKOBYAN / Shutterstock.com (ANDRANIK HAKOBYAN / Shutterstock.com)
A C-suite executive retiring at 62 with $1.8 million in a traditional 401(k), $400,000 in RSUs, a nonqualified deferred compensation (NQDC) plan still paying out, and a brokerage account full of appreciated stock does not have a retirement income problem. The problem is that every one of those assets carries a different tax treatment, and without a model showing all of them in a single view, they will collide in ways that make a zero-tax year structurally impossible.
Zero taxes in retirement is achievable, but only in specific years, and only when the income stack is managed deliberately. Most executives who retire with no tax bill in years two through five still face a large tax bill once NQDC distributions end and Social Security begins. The goal is to identify which years offer the opportunity and exploit them fully.
The Income Stack Problem Executives Face
Most retirement planning treats the 401(k) in isolation. For senior executives, the actual income stack typically includes NQDC plan distributions (taxed as ordinary income when received), RSU vesting or stock option exercises that may still occur post-retirement, Social Security benefits (up to 85% of which become taxable once combined income exceeds $44,000 for joint filers), and eventually required minimum distributions from the 401(k).
Each source interacts with the others. A $120,000 NQDC distribution in the same year as a Roth conversion eliminates the conversion window entirely. Layer in Social Security and the combined income threshold is breached, pulling up to 85% of those benefits into taxable income. The effective marginal rate on the next dollar combines the stated bracket rate, the Social Security inclusion effect, and any IRMAA surcharge triggered by the two-year lookback.
The IRMAA Trap Inside the Conversion Window
For 2026, the first IRMAA threshold for married couples filing jointly is $218,000 in MAGI. Income above that level triggers a Medicare surcharge of $1,148 per person annually on top of the standard Part B premium of $202.90 per month. Cross the second tier at $274,000 and the surcharge jumps to $2,886 per person. For a couple, that is $5,772 per year in additional Medicare costs, assessed based on income from two years prior.
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Read: Data Shows One Habit Doubles American’s Savings And Boosts Retirement
Most Americans drastically underestimate how much they need to retire and overestimate how prepared they are. But data shows that people with one habit have more than double the savings of those who don’t.
A Roth conversion executed today affects Medicare premiums in 2028. An executive who converts $100,000 in a year when MAGI was already $190,000 will push the household to $290,000, landing in Tier 2 and triggering that $5,772 couple surcharge. The conversion may still be worth it long-term, but the IRMAA cost belongs in the math.
Three Levers for Zero-Tax Years
The executives who reach zero-tax years in retirement work three levers in combination.
Systematic Roth conversion during the gap years. The gap between the last paycheck and the start of Social Security is typically the lowest-income period of post-career life, provided NQDC distributions have been sequenced to run before retirement rather than concurrently. The 24% bracket for married filers runs from $211,400 to $403,550 in 2026, with the standard deduction at $32,200. An executive with $80,000 in NQDC income remaining and no other taxable income has a conversion window of roughly $100,000 before reaching the 24% bracket ceiling, and a tighter window before hitting the first IRMAA threshold. Converting within that band, year after year, permanently removes those dollars from the future RMD calculation.
Appreciated stock and the step-up strategy. RSUs and stock options that have vested over a career often sit in brokerage accounts with very low cost basis. Donating appreciated shares to a donor-advised fund generates a charitable deduction at fair market value with no capital gains recognition. In years when the executive is in the 12% bracket (taxable income below $100,800 for joint filers), long-term capital gains are taxed at 0%, making it possible to harvest gains tax-free and reset the basis. These strategies require the income stack model to identify which lever to pull in which year.
HSA drawdown for healthcare costs. An executive who contributed the family maximum of $8,750 to an HSA in 2026 and paid medical costs out of pocket during working years can draw on that accumulated balance in retirement completely tax-free for qualified medical expenses. Routing healthcare costs through the HSA rather than from 401(k) withdrawals preserves the conversion window and reduces taxable income in the years that matter most.
The QCD as a Permanent RMD Offset
The 12% bracket applies to lower income ranges; once RMDs begin, the income stack loses flexibility. A qualified charitable distribution allows an IRA or 401(k) owner who is 70.5 or older to transfer up to $111,000 per person directly to a qualified charity in 2026, satisfying the RMD requirement without the distribution appearing in adjusted gross income. For a couple, that is up to $222,000 in RMD income that bypasses the Social Security taxation threshold, bypasses the IRMAA lookback, and reduces the taxable estate simultaneously. Executives with charitable intent should model this as a structural RMD offset rather than an afterthought.
Three Actions That Change the Math -
Build the income stack model before retirement. List every income source by year: NQDC distributions, Social Security start date, expected RMDs, consulting income, and investment income. Identify the years where taxable income is naturally lowest. Those are the Roth conversion years, and the window is usually shorter than it appears once NQDC and Social Security overlap.
Check the IRMAA two-year lookback before any large conversion. If MAGI this year sets Medicare premiums in 2028, a conversion that pushes income just over $218,000 costs $2,297 per couple in annual surcharges for that year. At Tier 2, the cost is $5,772. The breakeven on whether the conversion clears the IRMAA hurdle over a 10-year horizon depends on the specific conversion amount and projected Medicare costs.
If NQDC distributions are still being elected, revisit the payout schedule before the next 409A election window. Distributions that land on top of Roth conversions and Social Security eliminate the zero-tax opportunity. Sequencing NQDC payouts to end before the conversion window opens requires action years before retirement.
Data Shows One Habit Doubles American’s Savings And Boosts Retirement
Most Americans drastically underestimate how much they need to retire and overestimate how prepared they are. But data shows that people with one habit have more than double the savings of those who don’t.
And no, it’s got nothing to do with increasing your income, savings, clipping coupons, or even cutting back on your lifestyle. It’s much more straightforward (and powerful) than any of that. Frankly, it’s shocking more people don’t adopt the habit given how easy it is.
Source: “AOL Money”
