Net Unrealized Appreciation (NUA): Pay Capital Gains—Not Ordinary Income—on Company Stock in Your 401(k)

Most executives with company stock in their 401(k) assume they'll pay ordinary income rates — up to 37% federal — when they eventually take distributions. That assumption is wrong, and the mistake costs hundreds of thousands of dollars. Under IRC §402(e)(4), you can distribute employer stock from your qualified plan in-kind and pay ordinary income rates only on the original cost basis. The appreciation — the net unrealized appreciation, or NUA — is taxed at long-term capital gains rates when you sell the shares.¹

For a CFO sitting on $3M+ of company stock inside their 401(k), the tax savings from a properly executed NUA strategy can exceed $400,000 in federal tax. The catch: you need a triggering event, you must take a lump-sum distribution, and the planning has to happen before you roll anything over to an IRA.

How NUA works: the tax split

When employer stock is distributed in-kind from a qualified plan as part of a lump-sum distribution, the tax treatment splits into two pieces:

Cost basis (employer's original cost): Taxed as ordinary income in the year of distribution — reported in box 2a of Form 1099-R. This is unavoidable and applies regardless of NUA treatment.
Net unrealized appreciation (NUA): The excess of FMV at distribution over the employer's cost basis. This amount is not taxed at distribution. When you later sell the shares, the NUA is taxed at long-term capital gains rates — regardless of how long you hold the shares post-distribution.¹ Additional gains above the distribution-date FMV are taxed at LTCG rates if held more than 12 months, or ordinary income rates if held 12 months or less.

The critical distinction: NUA is always long-term capital gain at sale, per IRS Notice 98-24. You don't need to hold the shares for another year post-distribution to get LTCG treatment on the NUA. If you receive shares with $2M of NUA and sell them the next day, the $2M gain is still a long-term capital gain.

The tax math: a concrete executive example

A CFO, age 58, has accumulated $3,500,000 of company stock inside her 401(k) over 20 years. The plan records show the employer's original cost basis is $400,000. She separates from the company, taking a lump-sum distribution of her full plan balance. The company stock comes out in-kind; the rest of the plan balance ($800,000 in mutual funds) she rolls to an IRA.

	NUA Strategy (distribute stock in-kind)	Full Rollover (roll everything to IRA)
Tax at distribution	$400,000 × 37% = $148,000 (ordinary income on cost basis)	$0 at rollover
Tax when stock is sold	$3,100,000 NUA × 23.8%* = $737,800 (LTCG + NIIT)	$3,500,000 × 37% = $1,295,000 (ordinary income from IRA)
Total federal tax on stock	$885,800	$1,295,000
Federal tax savings from NUA	$409,200

*23.8% = 20% LTCG rate + 3.8% NIIT. Assumes MAGI well above $250,000 MFJ threshold for NIIT.

The $409,200 savings represents 37% minus 23.8% applied to the $3.1M NUA — the full rate arbitrage on the stock's appreciation. The larger the NUA relative to the cost basis, and the larger the position, the more valuable the strategy.

Requirements: what qualifies for NUA treatment

1. Employer securities only

NUA treatment applies only to employer securities — stock of the company that sponsors the qualified plan. Mutual funds, diversified equity positions, bonds, or company stock in an IRA do not qualify.¹ The plan types that can hold qualifying employer securities include 401(k) plans, employee stock ownership plans (ESOPs), and profit-sharing or stock bonus plans. IRAs and SEP-IRAs are excluded — this is one reason rolling company stock to an IRA first destroys the NUA election permanently.

2. Lump-sum distribution

A lump-sum distribution means the entire balance of all qualified plans of the same type sponsored by that employer must be distributed within a single tax year.¹ You cannot take just the company stock while leaving other plan assets behind. However, you can direct different portions to different destinations — the company stock distributed in-kind, and the rest rolled to an IRA — as long as the entire plan balance is moved in that same tax year.

Partial rollover strategy: In practice, most executives use a split approach. The company stock is distributed in-kind (triggering NUA treatment). All other plan assets — mutual funds, bond funds, cash — are rolled to an IRA in a trustee-to-trustee transfer. Only the stock portion is subject to ordinary income tax at distribution. The lump-sum requirement is satisfied because the full plan balance was distributed; the IRA rollover is just a different destination for the non-stock portion.

3. A triggering event

NUA is available only after one of four triggering events:²

Separation from service — the most common for executives. You must have actually left the employer, not just reduced hours or changed roles.
Reaching age 59½ — available while still employed; the plan must permit in-service distributions, which many 401(k) plans do for participants over 59½.
Death — available to the plan beneficiary.
Disability — as defined under IRC §72(m)(7), not necessarily the same as an insurance policy's own-occupation definition. (Note: this is different from the 409A disability standard. See the executive disability insurance guide for the distinction.)

The rule of 55 and early distribution penalty

The 10% early distribution penalty under IRC §72(t) applies to distributions from qualified plans before age 59½. There is an important exception for executives separating from service: if you separate from service in or after the calendar year you turn 55, distributions from employer-sponsored qualified plans (not IRAs) are penalty-free.³

Under the NUA strategy:

The cost basis portion distributed as ordinary income is subject to the 10% penalty if you're under 59½ and did not meet the rule-of-55 exception.
The NUA amount itself is not income at distribution — there's no income to penalize at that point.

For an executive who separates at age 57, the penalty on the cost basis ($400,000 × 10% = $40,000 in the example above) may still be worth paying relative to the $409,200 in LTCG savings. The math depends on the ratio of NUA to cost basis — higher NUA-to-basis ratios make the strategy more attractive even when a penalty applies.

Section 16 and Rule 144 after distribution

Once company stock leaves the 401(k) via an in-kind distribution, it is outside the plan and held directly by the executive. This changes the regulatory environment significantly:

Rule 144 volume limitations: If the executive is still an "affiliate" (officer, director, or 10% shareholder) at the time of sale, Rule 144 caps sales at 1% of outstanding shares or the 4-week average trading volume per 3-month period, and requires a Form 144 filing for sales exceeding 5,000 shares or $50,000.⁴
Section 16 Form 4 obligations: A distribution of employer securities from a plan can require a Form 4 filing. Rule 16b-3 provides an exemption for certain plan transactions that are approved by the compensation committee or board, but the filing obligation itself (within 2 business days) still applies for Section 16 officers.⁵
Post-separation affiliate status: An executive who has separated from service and no longer holds an officer or director title may lose "affiliate" status after a 90-day period, at which point Rule 144 volume limitations no longer apply. This is a meaningful planning consideration for the timing of post-NUA sales.

For executives still employed who use the age-59½ trigger, they are typically still active affiliates. A 10b5-1 plan established before the NUA distribution can provide a compliant framework for selling the distributed shares during open windows. See the 10b5-1 plans guide.

When NUA beats the rollover — and when it doesn't

Factor	Favors NUA	Favors rollover
NUA-to-basis ratio	High (e.g., 10:1 — $1M NUA on $100K basis)	Low (e.g., 2:1 — the rate differential doesn't overcome the upfront ordinary income tax)
Expected ordinary income rate at future IRA distributions	High (you'll still be in 37% bracket in retirement)	Low (you'll drop to 22-24% in retirement, compressing the rate differential)
Holding period after distribution	Short (sell within months — NUA is always LTCG)	Long (IRA deferral benefit grows with time; more years of tax-deferred growth)
Affiliate / Rule 144 status	Post-departure (no volume constraints on selling)	Active affiliate with long lockup ahead (NUA stock hard to sell)
Need for immediate liquidity	High (can sell stock immediately; NUA still gets LTCG rates)	Low (IRA compounding beats NUA if you don't need the cash)
State tax treatment	States with preferential LTCG rates (e.g., federal LTCG preference)	States that tax capital gains as ordinary income (CA, NY — rate differential is smaller)

The strategy almost never makes sense when the NUA-to-basis ratio is below roughly 2:1, or when the executive expects their marginal rate in retirement to drop substantially. A specialist can run the break-even analysis for your specific position size, basis, tax bracket trajectory, and state residence.

What executives miss: the rollover-before-distribution trap

The most common mistake is irreversible: rolling the entire 401(k) balance — including company stock — to an IRA before exploring the NUA option. Once employer stock sits in an IRA, NUA treatment is gone permanently. All future distributions from an IRA are ordinary income regardless of how the stock performs. There is no retroactive NUA election available after a rollover.

If you're within 60 days of a plan distribution and haven't yet deposited the check in an IRA, you may still have time. If the plan made a direct rollover (trustee-to-trustee), the window is closed. This is worth a conversation before you accept the default rollover paperwork from your plan administrator.

Coordinate with the rest of your exec comp picture

NUA doesn't exist in isolation. The ordinary income recognized at distribution in the year of the lump-sum distribution can interact with several other income sources:

NQDC distributions — if your separation from service triggers NQDC distributions (particularly if you're a specified employee, your 6-month delay under §409A will push distributions into the following year), those pile on top of the NUA ordinary income. See the NQDC planning guide.
Concentrated stock positions — the distributed shares join any outside-the-plan concentrated position. Your total company stock exposure post-distribution may exceed what you're comfortable holding. Plan the sell-down schedule before executing. See concentrated stock diversification strategies.
Severance income — separation packages often land in the same tax year as the NUA ordinary income hit. The stacking can create an unexpectedly large ordinary income year. See the executive departure planning guide.
Charitable giving — distributing NUA stock and then donating some shares to a DAF eliminates the capital gain on donated shares and generates a full FMV deduction. The charitable strategy can apply to the portion of the position that would otherwise generate the largest capital gains. See charitable giving with concentrated stock.

Get the analysis before you move anything

The NUA election is permanent in both directions — you can't undo a rollover that cost you the option, and you can't undo a distribution once taken. The decision requires your plan's cost basis records, your current and projected tax rates, your state of residence, your timeline for selling the stock, and how the NUA fits with every other income event that year.

A fee-only financial advisor who specializes in executive compensation has run this analysis dozens of times. They can pull the cost basis numbers from your plan, model the scenarios, and give you a clear recommendation — usually within a few days of the initial meeting.

Get matched with an executive comp specialist

NUA planning is one of the highest-value decisions an executive with company stock in a 401(k) can make — and one of the most time-sensitive. Once the rollover is done, the opportunity is gone. Tell us your situation and we'll match you with a fee-only specialist who can model the scenarios for your specific position.

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Executive Comp Advisors is a matching service. We connect you with vetted fee-only financial advisors in our network — we don't manage money or provide advice ourselves. Advisors in our network are fiduciaries who charge transparent fees (not product commissions), and we match you based on your specific situation.

Sources

IRC §402(e)(4) — Net unrealized appreciation in employer securities. Lump-sum distribution requirement, triggering events, NUA definition, and long-term capital gains treatment. Cornell LII.
Retirement Learning Center — Lump Sum Distribution Triggers and NUA. Plain-language explanation of the four triggering events and the lump-sum distribution mechanics under §402(e)(4).
IRS — Retirement Topics: Tax on Early Distributions. Rule of 55 exception (IRC §72(t)(2)(A)(v)): separation from service in or after the year you turn 55 avoids the 10% early distribution penalty on qualified plan distributions (not IRAs).
SEC Rule 144 — Persons deemed not to be engaged in a distribution (17 CFR §230.144). Volume limitations, holding period, and Form 144 filing requirements for affiliates selling restricted and control securities.
SEC Rule 16b-3 — Transactions between an issuer and its officers or directors (17 CFR §240.16b-3). Exemptions for plan transactions from Section 16(b) short-swing profit recovery; Form 4 filing obligations still apply.
Tax Foundation — 2026 Tax Brackets and Federal Income Tax Rates. 2026 LTCG rate thresholds: 0% (≤$49,450 single / ≤$98,900 MFJ), 15% ($49,451–$545,500 single / $98,901–$613,700 MFJ), 20% (above $545,500 single / $613,700 MFJ).
IRS — Net Investment Income Tax (IRC §1411). NIIT rate: 3.8%. MAGI thresholds: $200,000 single / $250,000 MFJ (statutory, not inflation-indexed).

Tax values verified as of May 2026. 2026 LTCG rate thresholds per Tax Foundation / IRS Rev. Proc. 2025-32. NIIT per IRC §1411 (statutory threshold). NUA rules per IRC §402(e)(4) and IRS Notice 98-24. IRC §402(e)(4) has not been amended by OBBBA or SECURE 2.0 as applied to NUA treatment. Rule of 55 per IRC §72(t)(2)(A)(v). Content verified as of May 2026.