The NUA strategy transfers the employer’s 401(k) stock to a taxable brokerage account, taxing only the cost basis as ordinary income and the rest on long-term interest rates.
In the case of $500,000 with a $100,000 basis, the NUA method reduces federal tax to $84,000 compared to up to $160,000 under a standard rollover IRA.
The NUA requires a qualifying trigger, a full distribution of the lump sum within one tax year, and a transfer of the dividend. Failure of any of these conditions terminates the election completely.
A recent study identified one trend that doubled Americans’ retirement savings and moved retirement from a dream, to a reality. Read more here.
The 61-year-old technology vice president who is retiring this summer has about $1.4 million in his 401(k). About $500,000 of that balance sits in employer stock he’s accumulated over the years through stock buybacks and company matches. An automatic move, rolling everything into an IRA, can cost tens of thousands in unpaid bills.
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The math-changing mechanic is Net Unrealized Appreciation, a provision included within Section 402(e)(4) of the IRC. Sponsors of the program rarely highlight it because the rules are minimal and the paperwork comes out of the record-keeper’s system.
How NUA elections really work
In a qualified lump sum plan, the employer’s stock leaves the 401(k) and sits directly in a regular taxable brokerage account. The cost basis, meaning the plan paid for those shares, is taxed as ordinary income in the year of the distribution. Appreciation in excess of that basis, “NUA,” is taxed at long-term capital gains rates when the shares are sold, regardless of how long they remain in the taxable account after issuance.
The difference with a standard rollover IRA is what makes the strategy so valuable. Within an IRA, each dollar of withdrawal is ultimately ordinary income. Under the NUA, only the foundation carries that label of ordinary income.
A difference of $68,000 from $500,000
Assume that a $500,000 executive position has a cost basis of $100,000 and $400,000 in appreciation. Her last IW-2 puts her in the 24% federal bracket, which includes a combined married couple earning more than $211,400 in 2026.
Read: Data Shows One Habit Doubles America’s Savings and Boosts Retirement
Most Americans underestimate how much they need for retirement and overestimate how much they are prepared for. But the data shows that people with one habit have more than twice as much income as those who do not.
Rollover method: the full $500,000 moves into an IRA. When it is finally withdrawn, or forced out through RMDs, every dollar is regular income. At 24%, the federal tax on a full-time position uses $120,000. In the 32% bracket that kicks in more than $403,550 on joint filers, the debt increases to $160,000.
NUA method:
$100,000 cost basis added to current year’s ordinary income at 24%: $24,000.
$400,000 of NUA is taxed at 15% rate of long-term capital gain on sale of shares: $60,000.
Combined federal tax: $84,000, a savings of $36,000 compared to the lower bracket rollover comparison.
The gap widens. The 2026 top marginal rate of 37% applies over $640,600 for married couples and $768,700 for married joint filers. At that rate, the spread between average income and a long-term rate of return of 20% runs 17 points at $400,000, or about $68,000 of federal tax avoided in one place.
Four rules that disqualify most people
Triggers an event. Separation from service, reaching age 59½, total disability, or death must have occurred. No event, no NUA.
The actual amount. All 401(k) balances must be distributed within one tax year. One in-service withdrawal in December forfeits the NUA from everything until the next qualifying event.
Money transfer. Employer shares go directly into a taxable brokerage account, not into an IRA. Cash or other assets in the plan can still go into the IRA in the same lump sum fashion.
Shares of the original employer. The stock must have been donated by the employer or purchased within the plan, not acquired through a post-cash transaction.
When the plan is quietly broken
The cost basis goes into the current year’s tax return all at once. For an executive still pulling in $400,000 in salary, adding another $100,000 in ordinary income would push the family into the 32% or 35% bracket and pull additional investment income to 3.8%. Most advisors use the lump sum for the year after wages drop to zero, usually the first full year of retirement.
The risk of concentration also remains. If the $500,000 represents a reasonable fraction of the net worth, the NUA tax win can be offset by a 30% reduction in one name. Selling the shares the day after the distribution locks in the income earns a discount and resets the diversification, with the cost of starting the tax bill in the first year instead of spreading it over the rest of retirement.
Three steps before calling the system administrator
Request a cost basis per share report from your 401(k) recordkeeper. Savings ratio and appreciation ratio to base. A 5-to-1 ratio is a bad split against a straight rollover, and a 10-to-1 is a clear win.
A distribution year versus rollover year model for tax forecasting including IRMAA. The basic bump becomes adjusted gross income and can raise Medicare Part B and Part D premiums two years later.
Confirm the plan document permits the distribution of the employer’s shares. Some systems force termination if split, which destroys the NUA election before the papers are filed.
Data Shows One Habit Doubles America’s Savings and Boosts Retirement
Most Americans underestimate how much they need for retirement and overestimate how much they are prepared for. But the data shows that people with one habit have more than that twice the savings of those who do not.
And no, it has nothing to do with increasing your income, saving, cutting coupons, or even reducing your lifestyle. It’s more direct (and powerful) than any of that. In fact, it’s shocking how many people don’t take this practice for granted.
