The One Holding You May Not Want to Roll Into an IRA
Rolling a 401(k) into an IRA is close to automatic advice, and for almost every holding it is right. Employer stock is the exception. Shares of your own company that have appreciated inside the plan can be distributed under a rule that taxes the growth at long-term capital gains rates rather than as ordinary income — and rolling them over silently gives that up for good.
- The answer:: Distribute the shares in kind rather than rolling them over. You are taxed now on the cost basis as ordinary income; the appreciation is taxed as a long-term gain when you sell, whenever that is.
- What it is worth:: The spread between your ordinary rate and your long-term rate, applied to the whole appreciation. On a large, long-held position that gap is the entire case.
- The conditions:: It requires a qualifying lump-sum distribution — the whole balance of the plan, in one tax year, after a triggering event such as separation from service or reaching 59½.
- How it is lost:: Rolling the shares into an IRA converts future gains into ordinary income permanently. So can taking a partial distribution first, which can disqualify the lump-sum condition.
Where the AI summary above gets this wrong
"When you leave your employer you should roll your entire 401(k) into an IRA to keep it tax-deferred."
That's surface-true. Here's what it misses:
- Employer stock is the standing exception — The blanket advice is right for funds and wrong for appreciated company shares. Rolling those into an IRA converts what could have been long-term capital gain into ordinary income on every future dollar of it, and the decision cannot be undone afterwards.
- The saving is on the appreciation, not the balance — NUA does not make the distribution tax-free. Cost basis is taxed as ordinary income immediately, in the year of distribution. What moves to the capital gains schedule is the growth above that basis — which is why the strategy suits old, low-basis, heavily appreciated positions and not recent ones.
- Deferral has value that the comparison ignores — Rolling over keeps everything sheltered for years or decades. NUA triggers a tax bill now on the basis. A modest appreciation over basis can leave the rollover ahead once that lost deferral is counted, so the election is not automatically right even when it is available.
01 What the election actually does
Employer securities held inside a qualified plan can be distributed in kind — the shares move to a taxable brokerage account rather than being sold or rolled over. In the year of that distribution you pay ordinary income tax on the plan's cost basis in the shares, which is broadly what was paid for them inside the plan.
The growth above that basis is the net unrealized appreciation, and it is not taxed at distribution. It is taxed when you sell the shares, as a long-term capital gain regardless of how long you have held them outside the plan.
So the arithmetic is a rate substitution on one slice of money. A position with $90,000 of basis and $400,000 of value carries $310,000 of appreciation. Taxed as ordinary income at 32% that is $99,200; at a 15% long-term rate it is $46,500. The difference is the whole reason the rule is worth knowing.
Shows: the difference between taxing the appreciation at long-term rates now and taxing it as ordinary income later, which is the entire NUA question. Ignores: the tax due immediately on the basis, the years of deferral you give up, and the concentration risk of holding one company's stock.
02 The conditions, and how people forfeit it
NUA treatment requires a lump-sum distribution: the entire balance of the plan distributed within a single tax year, following a triggering event — separation from service, reaching 59½, disability, or death. Partial does not qualify, and neither does spreading it across two calendar years.
The most common way it is lost is the ordinary one. Someone leaves an employer, rolls the whole 401(k) into an IRA because that is the standard move, and the shares go with it. Inside the IRA there is no basis distinction any more: every future dollar comes out as ordinary income. Nothing about the transaction warns you, and it cannot be reversed.
A subtler failure is taking a small distribution first — for cash, or to satisfy something else — which can break the lump-sum condition for the year and take the election with it. If employer stock is in the plan, the sequence of rollover steps needs deciding before anything moves.
03 When it is worth doing, and when it is not
The election favours a large spread between basis and value, and a large gap between your ordinary and long-term rates. Long service at a company whose shares rose substantially is the classic case; shares bought recently at close to today's price are not.
Against it sits the immediate bill. Tax on the basis is due in the year of distribution, and the money is out of the shelter, where dividends become currently taxable. A rollover that keeps everything deferred for another twenty years can win despite the worse rate, if the appreciation is modest.
Two further points. The election is not all-or-nothing: you can apply NUA to some lots and roll the rest, which is often the sensible answer. And a concentrated holding in one employer's stock is a risk position as much as a tax position — the tax treatment is a reason to plan the sale carefully, not a reason to keep holding it.
The thing that makes this expensive is that the mistake looks like diligence. Someone leaves a company after twenty years, does the responsible thing within a fortnight, consolidates everything into one IRA, and destroys a six-figure tax election in the process. The window is at separation, and the only protective habit is a question: does the plan hold employer stock? If it does, nothing moves until that is priced. If it does not, roll it over and think no more about it.
FAQ
What is net unrealized appreciation?
It is the growth in employer stock held inside a qualified plan, above what the plan paid for it. Distributed in kind, you pay ordinary income tax on the cost basis now and the appreciation is taxed as a long-term capital gain when you sell the shares.
Can I still use NUA after rolling my 401(k) into an IRA?
No. Once the shares are in an IRA the basis distinction is gone and every future dollar comes out as ordinary income. The election has to be made on distribution from the plan, and it cannot be recovered afterwards.
Is NUA always better than rolling the shares over?
No. You owe ordinary income tax on the cost basis immediately, and you give up years of tax deferral. Where the appreciation is modest relative to basis, a rollover that keeps everything sheltered can produce the better result despite the higher eventual rate.
Sources
Regulator references
- Publication 575, Pension and Annuity Income · Internal Revenue Service · 2025The net unrealized appreciation rules and what a qualifying distribution requires.Last verified: 2026-09-07
- Topic no. 412, Lump-sum distributions · Internal Revenue Service · 2025The lump-sum distribution conditions the treatment depends on.Last verified: 2026-09-07
- Topic no. 409, Capital gains and losses · Internal Revenue Service · 2025The long-term rate schedule the appreciation is taxed on instead.Last verified: 2026-09-07
Calculator unit tests · the assertions this page's worked example is checked against, and their last result
Changelog
- 2026-09-07 — initial publish (new format)
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Jordan Reeves
Founder of Talk Through Wealth. A software engineer for over a decade before turning to retirement planning, Jordan built the projection engine after watching family members get fragmented, country-by-country advice that never reconciled. He writes about retirement the way the engine computes it: month-by-month, lifetime-long, and skeptical of any rule of thumb that hasn't been run through the math.