Net Unrealized Appreciation: What Actually Determines Whether It Is Worth Using?

START WITH THE DECISION

Consider a client who is leaving her employer at age 40.

Her 401(k) is worth approximately $335,000. About $200,000 of the account consists of employer stock. The plan’s cost basis in that stock is $68,500, leaving $131,500 of net unrealized appreciation, or NUA.

For simplicity, assume that none of the $68,500 reflects after-tax employee contributions. If after-tax contributions were allocable to the stock, the amount recognized as ordinary income at distribution could be lower.

The client appears to face a straightforward choice. She can roll the retirement plan into an IRA, as many departing employees do. Or she can distribute the employer stock in kind to a taxable brokerage account and use the special tax treatment available for NUA.¹

At first glance, the second path looks compelling.

If the employer stock goes into an IRA, its special character disappears. Future taxable withdrawals from the IRA will generally be ordinary income, regardless of how much of the account value originally represented appreciation in company stock.

A qualifying NUA transaction works differently. The stock’s taxable cost basis is generally recognized as ordinary income when the shares leave the plan. The appreciation accumulated inside the plan is deferred until the shares are sold and then receives long-term capital-gain treatment.

The client therefore appears to have a simple opportunity: pay ordinary income tax on $68,500 and preserve capital-gain treatment on $131,500.

So should she do it?

This is exactly where I would resist answering from the tax-rate spread alone. The NUA decision does not exist in isolation. It sits inside a larger set of tax, portfolio, timing, and liquidity decisions, and the attractive answer to the narrow question may not survive the wider one.

A similar argument is emerging within financial-planning scholarship itself. Shlomo Benartzi argues that the value of financial advice is understated when it is judged mainly through investment decisions, because savings, debt, insurance, and other connected choices also belong inside the planning frame.² NUA is a tax strategy, but the decision whether to use it is a financial-planning decision.

The analysis that follows therefore moves through five linked questions: whether the transaction can actually be executed, when it should be evaluated, how the complete NUA path compares with the IRA alternative, how much of the employer-stock position should be included, and whether NUA is the best use of the client’s limited tax capacity and portfolio flexibility.

WHY NUA LOOKS SO ATTRACTIVE — AND WHAT HAS TO BE TRUE FIRST

The basic NUA mechanism is unusual enough to invite a shortcut.

Employer stock can appreciate dramatically during a long career. If that stock is rolled into an IRA, the distinction between its original cost and its appreciation disappears for future distribution purposes. A later taxable IRA withdrawal is generally ordinary income.

NUA preserves that distinction.

In a qualifying transaction, the employer securities themselves leave the retirement plan and move to a taxable account. The participant generally recognizes ordinary income on the plan’s taxable cost basis in those shares. The appreciation already embedded in the stock at the time of distribution — the NUA — remains untaxed at that point. When that portion of the gain is ultimately realized, it receives long-term capital-gain treatment.

The strategy is therefore easy to summarize: ordinary-income treatment on the taxable basis, capital-gain treatment on the appreciation.

The simplicity of that summary is also what makes it dangerous. NUA is different from an election that can simply be attached to employer stock whenever the rate spread looks favorable.

For the lump-sum treatment relevant here, the participant’s entire balance in the employer’s qualified plans of the same kind generally must be distributed within a single taxable year, after a qualifying triggering event. Like plans are aggregated for this purpose rather than considered account by account.³

For an employee, qualifying events include separation from service, actually reaching age 59½, and death. Disability is also a triggering event in the circumstances specified for a self-employed participant. Death matters for another reason: beneficiaries may themselves have an NUA opportunity following the participant’s death.

The employer securities intended for NUA treatment must actually leave the plan as securities. Other eligible assets can generally be directed elsewhere, including by rollover to an IRA, while the required distribution of the plan balance is completed during that taxable year.

Tax eligibility and plan-level executability are therefore different questions. Jeffrey Levine’s analysis of NUA in privately held ESOPs makes the distinction particularly visible: even when the tax concept is available, plan provisions and restrictions on in-kind distributions can determine whether the transaction is practically available on workable terms.³ Our client is not necessarily in that setting, but the planning lesson transfers: never infer operational availability from tax eligibility alone.

Those mechanics make parts of the decision irreversible. Rolling the employer stock into an IRA eliminates the NUA opportunity for those shares. Waiting carries a different burden: the client must preserve both a valid future execution path and an employer-stock position that can still be distributed in kind.

Before asking whether NUA saves tax, I would therefore ask a more basic question: can the strategy actually be executed under this client’s plan and timeline?

COMPARE COMPLETE PATHS, NOT TAX RATES

Return to the 40-year-old client.

The headline comparison says that $131,500 of appreciation could eventually receive long-term capital-gain treatment instead of being absorbed into an IRA and later taxed as ordinary income.

Obtaining that treatment has a price.

To execute the NUA transaction now, the client must bring the $68,500 taxable basis into current ordinary income. Because she separated from service at age 40, the separation-from-service exception available for certain qualified-plan distributions following separation in or after the year a participant reaches age 55 will never apply to this separation. Absent another applicable exception, a taxable distribution before age 59½ can also be exposed to the 10% additional tax.⁴

Current taxation has another consequence that is easy to understate. If the stock remains inside the retirement system, tax that would otherwise be accelerated into the present remains deferred, and assets that would otherwise leave the account to satisfy current tax can remain invested until distributions are ultimately made.

For a 40-year-old client, that distinction may persist for decades.

The IRA path also gives the client something economically important: she can diversify away from the employer stock inside the retirement account without triggering capital-gain tax. Favorable treatment on past appreciation does not require continued exposure to the employer.

The broader tax-planning literature provides a useful discipline here. The global tax-planning tradition associated with Scholes and Wolfson treats taxes as one cost among several rather than as the objective function itself. Minimizing the visible tax bill and maximizing economic value are different problems.⁵

The same discipline appears from the household-valuation side. Reichenstein argues that a dollar held inside a pre-tax retirement account and a dollar of after-tax wealth are not economically interchangeable; meaningful comparisons require conversion to a common after-tax basis.⁶

That gives us a cleaner benchmark than “ordinary income versus capital gains.”

Imagine that the client executes NUA and immediately sells the distributed shares. The concentration problem largely disappears. There is no elaborate multi-year liquidation schedule and almost no post-distribution appreciation to complicate the comparison.

We can then put the two starting positions on a common tax-adjusted footing: current ordinary income and any applicable additional tax on the $68,500 taxable basis, combined with capital-gain treatment on the $131,500 NUA, versus preserving the $200,000 inside the retirement system and eventually paying ordinary-income tax.

A simple illustration shows how much the framing matters.

Suppose, purely for illustration, that the client’s taxable basis is subject to a 24% ordinary-income rate, the 10% additional tax applies, and the $131,500 of NUA is sold immediately at a 15% long-term capital-gain rate. Assume as well, solely to make this starting comparison commensurable, that the eventual ordinary-income rate on the IRA path is also 24%. The 24% rate is a simplifying assumption, not a flat tax on the basis: in an actual return, the $68,500 would stack on top of the client’s other ordinary income and may span marginal brackets.

The NUA path produces $16,440 of ordinary income tax on the $68,500 basis, $6,850 of additional tax, and $19,725 of capital-gains tax on the $131,500 NUA. Total tax is $43,015. After an immediate sale of the entire $200,000 position, approximately $156,985 remains.

Under the IRA path, the full $200,000 remains inside the retirement account. At the assumed eventual 24% ordinary-income rate, its tax-adjusted value is $152,000.⁶

That $152,000 is not cash available today, a present-value calculation, or a forecast of the future account balance. It is simply an after-tax equivalent used to compare the starting economic claims on the same $200,000 before introducing future returns, timing, and taxable-account drag.

On those assumptions, NUA begins with an after-tax advantage of $4,985 — roughly 2.5% of the original employer-stock position.

What interests me in this comparison is not whether NUA appears to win at the starting line. On these assumptions, it does. What matters is how quickly an apparently decisive rate advantage contracts once both paths are placed on comparable terms.

The nine-percentage-point rate advantage on the $131,500 of NUA is worth $11,835. The $6,850 additional tax consumes more than half of it immediately:

One deliberately stripped-down sensitivity shows how fragile that opening margin can be. Suppose the $156,985 remaining after the immediate NUA sale is reinvested in a taxable portfolio; both paths experience the same cumulative price-growth factor, g; subsequent taxable appreciation is taxed at 15% only when ultimately realized; the IRA is valued at the same 24% eventual ordinary-income rate; and dividends, turnover, state tax, and differences in investment return are ignored.

These paths cross at g ≈ 1.27. Under this narrow sensitivity, the $4,985 opening NUA advantage is exhausted after about 27% of cumulative growth—roughly 3.5 years at 7% annual price appreciation or 4.9 years at 5%. The required cumulative growth is independent of the assumed annual return; the time needed to reach it is not. This is a sensitivity, not a forecast, but it shows why a positive starting margin need not be durable.

The remaining margin must then be evaluated in a complete path. A taxable position can incur current tax on dividends and future taxable transactions, while the IRA continues to shelter internal transactions from current taxation. The comparison also depends on something we cannot know today: the client’s eventual ordinary-income rate.⁷

A tax benefit can therefore be real and still be too small to decide the planning question.

The immediate-sale case is a benchmark, not the entire analysis. The benchmark itself is also year-specific. The ordinary-income cost of recognizing the basis depends on the distribution year. A planner who tests only the client’s high-income separation year may reject a strategy that looks quite different in another plausible year.

State taxation can materially alter the comparison as well. NUA accelerates ordinary income on the stock basis into the distribution year, while the IRA path defers taxable distributions and may ultimately be taxed under a different state regime. For scale, a 5% state tax on the $68,500 basis would equal $3,425—already a substantial fraction of the $4,985 federal starting advantage—but that amount is not a standalone NUA cost unless the alternative IRA path avoids comparable state taxation. Residency and applicable state law therefore belong in the complete-path analysis.

I would therefore test the immediate-sale path across realistic distribution windows first. Only then would I ask whether holding the shares, staging the sale, or applying NUA to only part of the employer-stock position improves the result further.

NUA IS AN OPTION BEFORE IT IS A STRATEGY

NUA can still sound like a decision that must be made immediately: use the treatment or give it up.

A better frame starts with three economically different states.

The client can exercise the NUA option by completing the qualifying distribution, moving the employer stock into a taxable account, and accepting the current tax consequences.

She can abandon it by rolling the employer stock into an IRA. Once that happens, the stock loses its separate NUA character for those shares, and future taxable IRA distributions will generally be ordinary income.

Or she can preserve the possibility of using NUA later.

That third state matters because uncertainty can have value.

There is a familiar economic logic behind that statement. Dixit’s work on irreversible investment emphasizes that when action is difficult to reverse and future information has value, waiting can itself be economically valuable. Milevsky and Young develop a closely related timing problem inside retirement finance: an irreversible annuitization decision can rationally be delayed even when annuitization itself has value.⁸

NUA is not formally the same problem, and there is no need to force a real-options model onto it. But the discipline carries over: the existence of a positive current advantage does not by itself establish that immediate exercise dominates preservation.

A client leaving an employer may not yet know her income next year, whether she will immediately begin another job, what liquidity she will need, whether the employer stock will remain an acceptable portfolio exposure, or whether some competing tax-planning opportunity will turn out to be more valuable.

Delaying an irreversible decision can therefore be rational when the plan permits the NUA opportunity to remain intact. Preservation, however, is more demanding than simply leaving the account alone.

Once a distribution is taken following a triggering event, a later distribution in another taxable year generally cannot simply be stitched back into a lump-sum distribution based on that same event. A later qualifying event can create a new path.⁹

For this client, that matters. Reaching age 59½ is itself another statutory triggering event. If an intervening distribution has made the earlier separation event unusable for a later lump-sum transaction, actually reaching 59½ can reopen a future NUA path, provided qualifying employer securities remain in the plan and can still be distributed in kind.⁹

The larger preservation risk is therefore different from a nineteen-and-a-half-year procedural minefield. The opportunity itself may change before another trigger arrives.

The plan can change. Employer-stock investment options can disappear. Corporate transactions may alter the position. The securities may no longer be held in a form that can be distributed in kind. The client may decide that continued concentration has ceased to make economic sense. Other planning priorities may simply become more important.

Preserving NUA means avoiding an irreversible rollover while the option still has enough potential value to justify the constraints required to keep it available.

That is a different question from whether NUA is attractive today.

THE BINARY DECISION BREAKS DOWN: HOW MUCH — AND WHICH SHARES?

NUA is commonly framed as a two-door choice: distribute the employer stock under NUA treatment or roll it into an IRA.

The actual decision can be more granular.

Two forms of granularity matter, and they are not equally available.

The first is partial NUA by quantity. NUA does not have to be applied to the entire employer-stock position. A participant can distribute part of the employer securities in kind and direct the remaining eligible assets into a rollover while still completing the required distribution of the plan during the lump-sum year.

Practitioner analysis has long recognized this. Kitces, for example, emphasizes that the advisor should determine how many NUA-eligible shares actually warrant in-kind distribution rather than assume that the entire employer-stock position should move together.¹⁰

That changes the economic question from “NUA or no NUA?” to “How much of the employer-stock position, if any, belongs in the NUA transaction?”

The second question is which shares.

Suppose the position was acquired at very different prices. Some shares may have extremely low basis and large embedded appreciation. Others may have basis much closer to current market value. A share worth $100 with a $10 basis presents a very different economic tradeoff from a share worth $100 with an $85 basis.

If those differences are visible and operationally actionable, treating all shares identically merely because they appear inside the same employer-stock position discards economically relevant information.

Lot selection, however, should never be assumed.

The regulations distinguish among methods of determining plan basis. Where particular employer securities were earmarked for a specific employee when purchased or contributed and their basis is reflected in that employee’s account, that basis is used in determining NUA. Other circumstances can require average-cost methods.¹⁰

That is a rule for determining basis. It does not create a universal participant right to demand distribution of whichever low-basis lots appear most attractive.

Whether particular shares can actually be identified and distributed therefore depends on the records preserved by the plan and recordkeeper and on the administrator’s operational support.

The recordkeeper question comes before the optimization question: what basis information actually exists, and can particular securities be identified for distribution?

In practice, that diligence can be literal:

• Does the plan permit partial in-kind distribution of employer securities?
• What basis records are maintained—share- or lot-specific records, or an average basis?
• Can specific shares actually be designated for distribution?
• What processing deadlines apply to completing the required distribution within the taxable year?

This is where I stop trusting account-level ratios as decision rules.

A planner may hear that NUA becomes attractive once employer stock exceeds some percentage of the account, appreciation reaches some multiple of basis, or the position crosses a particular dollar threshold. Such rules can be useful for finding cases worth examining. They become much less reliable once the actual choice can be made at a finer level than the account summary itself.

Partial NUA makes that especially clear. An unattractive portion of the position need not invalidate the entire strategy. A particularly attractive low-basis portion does not imply that every share should leave the retirement system.

Levine’s analysis of modestly appreciated employer stock makes the complementary point from the other direction: a modest NUA ratio does not automatically make the strategy unattractive when the client has near-term cash-flow needs that would otherwise require taxable retirement distributions.¹¹

That is why a threshold can screen without deciding.

For the client in our example, the aggregate numbers — $200,000 of employer stock and $68,500 of basis — establish that meaningful NUA exists. They still cannot tell us whether the full $200,000 belongs in an NUA transaction.

The planner first has to know what sits underneath the aggregate basis, when the plan’s records make that level of detail visible at all.

This also fits a broader Decision Quality principle: technically sound arithmetic cannot rescue a poorly framed choice set. The alternatives have to be properly defined before analysis can rank them.¹²

The broader principle is to evaluate NUA at the finest economically meaningful level the plan actually allows, rather than treating the account-level summary as though it defines the decision.

DISTRIBUTION TIMING IS DIFFERENT FROM SALE TIMING

Once employer stock has been distributed under NUA treatment, another decision begins.

The distribution decision determines when the stock leaves the retirement plan, when the taxable basis enters ordinary income, and whether the requirements for NUA treatment have been satisfied. The sale decision determines when the gain is realized in the taxable account.

Those clocks have different tax consequences.

The original NUA — the appreciation that existed while the shares were inside the employer plan — receives long-term capital-gain treatment when the shares are sold even if the client sells shortly after the distribution.

Post-distribution appreciation belongs to a different layer. Its holding period begins after distribution. If the stock rises after distribution and the client sells before the new holding period becomes long term, that additional gain can be short-term even while the original NUA layer remains long-term.¹³

The immediate-sale benchmark established earlier largely removes that second layer. Once the planner has tested the benchmark across plausible distribution years, later sale timing can be considered on its own terms.

This is where staged liquidation can look more powerful than it really is.

Instead of selling all the shares at once, the client might sell one portion this year, another next year, and the rest later. That may help manage capital-gains brackets, liquidity, or the pace of diversification.

All of those benefits are legitimate. None is uniquely created by NUA.

Any investor holding appreciated stock in a taxable account can choose whether to realize a gain today or spread realization across several years. Constantinides formalized the broader importance of tax-sensitive realization timing decades ago; the point here is narrower: the timing option belongs to taxable ownership generally rather than to NUA specifically.¹³

That distinction matters because otherwise the same advantage gets counted twice. NUA creates the special tax character of the appreciation accumulated inside the plan; the later sale schedule determines when that gain is recognized.

A clever liquidation schedule can improve the NUA path. It falls short of proving that the original decision to execute NUA was sound.

The order of operations therefore matters. First choose the plausible distribution year and determine whether exercising NUA creates a sufficiently attractive complete path. Then optimize the resulting taxable position.

When those questions are reversed, ordinary tax management can masquerade as evidence for the NUA strategy itself.

THE 0% CAPITAL-GAINS BRACKET IS NOT FREE CAPACITY

Once distribution timing and sale timing are separated, another attractive idea appears: wait for a low-income year, execute NUA, and realize as much of the gain as possible inside the 0% long-term capital-gains bracket.

Sometimes that will be valuable.

The trouble begins when the bracket is treated as empty space belonging exclusively to NUA.

Consider a client with an unusually low-income year after leaving employment. The year may be attractive for realizing NUA. It may also be attractive for a Roth conversion.

Those strategies share the same tax return.

Ordinary income sits beneath preferential-rate capital gains in the tax calculation. A Roth conversion therefore consumes ordinary-income capacity before preferential-rate gain is layered on top. Enough conversion income can push capital gain that otherwise would have remained inside the 0% band into a higher capital-gains band.

Suppose, conceptually, that after the client’s other income and deductions there is $40,000 of room before additional long-term capital gain begins moving out of the 0% band. Using $30,000 of that space for a Roth conversion leaves far less room for gain realization.

NUA also competes with itself.

The distribution generates ordinary income through the taxable basis. If the client distributes and sells in the same year, that basis occupies ordinary-income space underneath the capital gain before the preserved NUA is layered onto the return.

In our case, $68,500 of taxable basis can materially change how much of the $131,500 NUA remains inside a favorable capital-gains band if the stock is sold in the same year.

Behavioral decision research has a useful term for the broader mistake. Read, Loewenstein, and Rabin call it choice bracketing: choices can be evaluated narrowly, one at a time, or more broadly by considering their joint consequences. Frederick and his coauthors identify a related failure — opportunity costs often remain outside active consideration unless the displaced alternatives are made explicit.¹⁴

I find that language useful in planning, with one qualification: wider is not automatically better in every possible decision. But a decision becomes vulnerable to narrow bracketing when its apparent benefit consumes the same scarce resource required by other decisions.

A low-income year is exactly such a case.

NUA, a Roth conversion, and capital-gain harvesting can each look attractive when examined alone. The actual planning question begins when they are placed beside one another and forced to compete for the same tax capacity.

Does the client use the year to realize NUA at a favorable capital-gains rate? Convert traditional retirement assets to Roth while the ordinary-income rate is temporarily low? Harvest unrelated gains? Preserve some other income-sensitive tax benefit?

The answer depends on the client’s complete circumstances. The constraint does not: the same tax capacity cannot be allocated twice.

Future rates add another dimension. Brown, Cederburg, and O’Doherty treat uncertainty over future tax schedules as a planning object in its own right rather than a nuisance left outside the model. Their setting is traditional versus Roth saving, not NUA, but the lesson travels well: over a long horizon, the future tax rate belongs inside the economic problem rather than being treated as a known constant.⁷

This is one place where narrow bracketing can do real damage. Three individually sensible recommendations can become a poor combined plan when each was optimized as though the other two did not exist.

A low-income year is therefore an opportunity, but it is also a scarce planning resource. Its value comes from deciding what deserves to occupy it.

HOLDING THE STOCK CHANGES THE DECISION

The immediate-sale benchmark deliberately removes most of the investment problem. Sell immediately, and the planner can compare the tax paths without having to forecast the employer stock’s future return.

Holding the shares changes the nature of the decision.

NUA is now a portfolio problem as well as a tax problem, because favorable tax treatment can encourage a client to retain a security she might otherwise sell.

For the 40-year-old client, the issue is particularly visible. Employer stock already represents a large portion of her retirement assets, and until recently her human capital was tied to the same company. Keeping a substantial taxable position after separation preserves a concentration that the IRA path would allow her to eliminate inside the retirement account without realizing a capital gain.

There is substantial literature behind that concern.

Benartzi (2001) documents how strongly past employer-stock performance can influence employees’ allocations to company stock even though those allocations do not predict subsequent performance. Meulbroek approaches the problem from the economic side and shows that the cost of lost diversification can be substantial under her model assumptions. The lifecycle-finance framework developed by Ibbotson, Milevsky, Chen, and Zhu adds another dimension: financial capital should not be considered independently from human capital, particularly when both have been exposed to the same employer.¹⁵

The economic cost of employer-stock concentration can therefore be material, not merely theoretical.

At the same time, the tax side should not be caricatured. NUA-specific work by Bajaj, Mazumdar, Nanda, and Surana provides a useful counterweight: once the NUA tax benefit is admitted into the allocation problem, some exposure to company stock can be rational under a range of modeled conditions.¹⁵

That is exactly why the planning problem has to remain a tradeoff rather than becoming a slogan about diversification.

The tax benefit from holding the NUA shares has to earn its way past the economic consequences of holding them. Accepting additional uncompensated concentration risk does not make a tax strategy more valuable.

Taxable ownership creates flexibility as well, although that flexibility belongs to taxable ownership rather than uniquely to NUA. Appreciated taxable positions can be sold selectively, donated, coordinated with other holdings, or in some circumstances hedged. NUA changes which assets reach the taxable account and on what tax terms.

That distinction keeps the comparison honest. The relevant alternative is not some generic taxable portfolio; it is the same wealth remaining inside an IRA, where many taxable-account techniques are either unavailable or unnecessary because trades inside the account do not themselves trigger capital-gain tax.

Charitable intent can make the distinction more interesting too. Appreciated taxable stock can interact with charitable planning in ways that differ from the charitable tools available inside retirement accounts. That may matter in a particular case, but it should be treated as another planning dimension rather than as a free NUA bonus.

The taxable account also brings costs that continue after the initial distribution. Dividends paid on the employer stock are now currently taxable instead of compounding inside the retirement wrapper without current income tax. Over a long holding period, that recurring drag can matter even if the client never sells a share.

Future appreciation divides the position still further.

The original NUA — the appreciation already embedded when the shares leave the plan — retains its special long-term capital-gain character when ultimately sold.

Post-distribution appreciation is a new investment gain. Its holding period begins after distribution and determines whether that later gain is short- or long-term when realized.

The same distinction carries into the Net Investment Income Tax. Under Treas. Reg. §1.1411-8(b)(4)(ii), gain attributable to the original NUA is treated as a qualified-plan distribution for this purpose and excluded from net investment income. Appreciation arising after distribution falls outside that exception and is included in net investment income under the applicable rules. Dividends paid after the employer securities have been distributed are likewise treated as net investment income, subject to the taxpayer-level NIIT rules.¹⁶

Exclusion from net investment income does not by itself exclude the recognized amounts from modified adjusted gross income for NIIT purposes. A large distribution and realization can therefore help push MAGI above the statutory threshold and expose other net investment income to the 3.8% tax even though the original NUA layer itself remains excluded from net investment income.¹⁶

Estate treatment creates another asymmetry.

Under the IRS’s longstanding position, the original NUA layer is treated as income in respect of a decedent and does not receive the ordinary basis adjustment that generally applies to appreciated property at death. Appreciation occurring after the NUA distribution belongs to a different layer and can receive the normal basis adjustment at death.¹⁷

So, under that IRS position, the familiar shortcut — use NUA, hold the shares until death, and let the heirs receive the entire position with a fresh basis — fails.

The heirs take the original NUA layer with its embedded gain intact, and that NUA retains its long-term capital-gain character when the shares are ultimately sold. The post-distribution appreciation is treated separately for basis purposes.¹⁷

Once the client chooses to hold the distributed shares, the planner is therefore managing three economically distinct tax layers: the ordinary-income exposure embedded in the taxable basis, the preserved NUA with its special treatment, and the investment gain or loss occurring after distribution.

Those layers behave differently for income tax, holding period, NIIT, and estate treatment. The portfolio itself also behaves differently because the client is now holding a concentrated taxable security rather than a diversifiable retirement account.

One percentage spread is no longer capable of summarizing that decision.

RETURN TO THE CASE

We can now return to the client from the beginning.

She is 40 years old. Her 401(k) is worth approximately $335,000. Employer stock represents $200,000 of the account. Its cost basis is $68,500, and the embedded NUA is $131,500.

The remaining approximately $135,000 of non-employer-stock assets does not disappear from the transaction. To satisfy the lump-sum rules for the transaction being analyzed, that balance also has to leave the relevant plan during the taxable year, typically by eligible rollover where appropriate, and the timing has to be coordinated with the in-kind stock distribution.

Those numbers initially appeared to create an obvious opportunity. A large portion of the stock’s value is appreciation, and long-term capital-gain rates can be lower than ordinary-income rates. NUA offers a way to preserve that favorable treatment.

The advantage is real. The implication is narrower.

To use NUA now, the client must recognize the $68,500 taxable basis as current ordinary income. Because she separated from service at age 40, the age-55 separation exception is unavailable for this separation. Unless another exception applies, eliminating the 10% additional-tax exposure purely through age requires actually reaching 59½.

That is about nineteen and a half years away.

During that period, the IRA alternative can continue deferring tax that would otherwise be accelerated into the present. The employer stock can be diversified inside the retirement system without a capital-gain realization. Meanwhile, the economic value of the NUA opportunity itself may change.

Reaching 59½ also creates a new NUA triggering event. If the earlier separation event can no longer support a later lump-sum transaction because of an intervening distribution, age 59½ can create another execution path if qualifying employer securities remain in the plan and can still be distributed in kind.⁹

Preservation is therefore better understood as economic optionality than as nineteen-and-a-half years of procedural avoidance. The deeper risk is that the position, plan mechanics, or client circumstances may no longer support a valuable NUA transaction when a better execution window arrives.

The large embedded NUA does not settle the question. Neither does the low aggregate basis or the observation that capital-gain rates may be lower.

If this were my planning case, I would not ask whether NUA is attractive in isolation. I would ask whether it remains attractive after the IRA path, future low-tax years, diversification, and competing uses of tax capacity receive their full economic weight.

That is a harder standard, but I think it is the right one for an irreversible decision.

The planner has to determine whether converting $131,500 of eventual ordinary-income exposure into specially treated NUA is valuable enough to compensate for any applicable additional tax, the opportunity cost of accelerating ordinary-income tax that could otherwise remain deferred, the loss of retirement-account treatment on the distributed assets, the portfolio consequences of moving stock into a taxable account, the alternative uses of favorable tax years, and the practical requirements of completing the transaction correctly.

For this client, immediate NUA execution is difficult to justify as the default choice.

The opposite conclusion would go too far. Immediate rollover would permanently eliminate the NUA possibility for those shares. If the plan allows that possibility to remain alive without imposing unacceptable portfolio or administrative constraints, preservation can still have value.

But preservation should have a reason.

A materially stronger future case might emerge after another triggering event or during an unusually favorable tax window. Partial NUA may become attractive even if treatment of the full position does not. Better basis information may reveal that only part of the position carries compelling embedded appreciation. Other uses of low-tax capacity may become less valuable.

Absent a change of that kind, a large NUA balance is evidence worth investigating, not an instruction to act.

At this point the decision becomes simpler. The planner does not need a universal basis-ratio threshold or a prediction of every future tax rate. The planner needs to answer five questions in the right order.

1. Can the NUA transaction actually be executed?
2. Which plausible distribution year gives the strategy its strongest realistic starting point?
3. In that year, is the complete NUA path better than the realistic IRA path?
4. If it is, how much of the employer-stock position — and which shares, if share-level selection is operationally available — belongs in the transaction?
5. Is NUA the best use of the client’s limited tax capacity and portfolio flexibility?

That sequencing is close to the discipline emphasized in Decision Quality: frame the decision correctly, identify meaningful alternatives, establish the relevant information and tradeoffs, and only then let analysis convert them into action.¹²

Only after those questions are answered does the familiar comparison between ordinary-income and capital-gains rates become useful.

The rate spread is one input into the decision.

It is not the decision itself.

THE DECISION

NUA can create substantial value. The point of the analysis is not to make the strategy look unattractive. It is to require the strategy to earn its place.

That standard is deliberately wider than asking whether NUA works on its own terms.

A financial plan is a system of competing uses for capital, tax capacity, liquidity, and time. Narrow bracketing can make one component look locally optimal precisely because the alternatives have been kept outside the frame.

For financial planning, I would state the principle more simply.

A locally attractive answer is not yet a client-level decision.

A favorable capital-gains rate is a reason to investigate NUA.

It is not a reason to use it.

The decision belongs to the plan around it.

NOTES AND FURTHER READING

For readers interested in the broader household-allocation problem, Gene Amromin, Jennifer Huang, and Clemens Sialm, “The Tradeoff Between Mortgage Prepayments and Tax-Deferred Retirement Savings,” Journal of Public Economics 91, no. 10 (2007): 2014–2040, provides a useful example of financial actions commonly discussed separately that are economically linked through the household’s allocation problem.

For practitioners who want to continue into NUA-specific analysis, the three Kitces/Levine pieces cited above form a useful progression: Kitces on the general NUA tradeoff and partial use, Levine on modest-appreciation cases, and Levine on the difference between tax eligibility and plan-level executability.

IMPORTANT DISCLOSURE

This article reflects the author’s professional analysis and judgment and is provided solely for educational and professional-discussion purposes. It does not constitute individualized financial-planning, investment, securities, tax, legal, accounting, or retirement-plan advice.

The views expressed are the author’s own and do not represent those of any current or former employer, affiliated firm, professional organization, or other institution.

Nothing in this article constitutes an offer, solicitation, or recommendation to buy, sell, hold, or otherwise transact in any security; to make or avoid any investment; to execute or avoid a rollover or distribution; to elect, preserve, or implement Net Unrealized Appreciation treatment; or to take any other action with respect to an individual’s financial, investment, retirement, or tax position.

The examples and calculations are hypothetical, intentionally simplified, and do not describe any actual client or engagement. Actual outcomes depend on individual circumstances, applicable federal, state, and local law, tax rates, plan terms and administrative procedures, cost-basis records, investment performance, liquidity needs, portfolio circumstances, and other facts that may change over time.

Before acting on any strategy discussed here, readers should independently verify the relevant facts, current law, and applicable plan provisions and, where appropriate, consult qualified financial, investment, tax, legal, accounting, or other professional advisers. Practitioners remain responsible for applying their own professional judgment and applicable professional standards when deciding whether any concept discussed here is relevant to a particular client.

Publication or use of this article does not create an adviser-client, fiduciary, attorney-client, accountant-client, tax-adviser, or other professional relationship between the author or publisher and any reader.

Law and regulatory guidance described as of September 14, 2026.