Net Unrealized Appreciation (NUA) Strategy: Should You Take Company Stock from Your 401(k)?

If your 401(k) contains highly appreciated employer stock, you may be eligible for one of the most overlooked tax breaks in retirement planning. The NUA strategy allows you to pay long-term capital gains rates — 0%, 15%, or 20% — on the appreciation in your company stock, instead of ordinary income rates of 22%–37%. For retirees with stock that has grown 5× or 10× since the employer purchased it, the tax savings can exceed $100,000 on a single distribution. The catch: the rules are strict, the decision is irreversible, and getting it wrong costs more than doing nothing.

What is net unrealized appreciation?

When your employer contributes or sells stock to your 401(k), it has a cost — the price paid at the time of purchase. If that stock has grown in value, the difference between the original cost and today's market value is called the net unrealized appreciation (NUA).

Under IRC § 402(e)(4), you can take employer stock out of a 401(k) "in-kind" — as actual shares, not cash — as part of a lump sum distribution (LSD). When you do:¹

• The cost basis (what the employer paid for the shares) is taxed as ordinary income in the year of distribution.
• The NUA (everything above the cost basis) is taxed at long-term capital gains rates when you sell the stock — no matter how quickly you sell.
• Any additional appreciation after the distribution date is taxed at short-term or long-term capital gains rates depending on your holding period from the date of distribution.

Compare this to the standard IRA rollover: if you roll all your 401(k) assets — including the employer stock — to a traditional IRA, every dollar you eventually withdraw is taxed at ordinary income rates. The NUA strategy essentially converts the appreciation from ordinary income to capital gains, which is taxed at a lower rate for almost every taxpayer.

Who qualifies: the lump sum distribution requirement

The NUA tax treatment is only available as part of a qualifying lump sum distribution (LSD). An LSD has specific requirements:¹

• The entire account balance of the plan must be distributed within one tax year. You can't take just the employer stock and leave the rest in the 401(k).
• The distribution must be triggered by a qualifying event: (1) separating from service from that employer, (2) reaching age 59½, (3) disability, or (4) death.
• The distribution must come from a qualified retirement plan — 401(k), profit-sharing plan, stock bonus plan. IRAs do not qualify for NUA treatment. 403(b) plans generally do not qualify, though some ERISA-governed 403(b) plans may — verify with your plan administrator.

The most common qualifying trigger for retirees is separation from service — retiring from the employer whose stock is in the plan. The other assets in the plan (non-company-stock) can be rolled to an IRA; only the employer stock needs to go to a taxable brokerage account in-kind.

The NUA tax calculation: what you actually pay

The NUA strategy's advantage is largest when:

• The NUA amount is large relative to the cost basis — meaning the stock has appreciated significantly
• Your ordinary income rate is substantially higher than your long-term capital gains rate
• You expect your future ordinary income rate to remain elevated (due to RMDs, pension, Social Security)

NUA tax savings calculator

Enter your company stock figures to compare the after-tax outcome of the NUA strategy versus rolling the stock to a traditional IRA.

When the NUA strategy makes sense — and when it doesn't

Step-by-step: how to execute the NUA strategy

1. Confirm eligibility before any distributions. Call your 401(k) plan administrator and ask: (a) Does the plan hold employer stock eligible for NUA treatment? (b) What is the total cost basis on your employer stock? (c) What triggers qualify as an LSD for this plan? Get the answer in writing or recorded.
2. Identify the cost basis. The plan administrator tracks the employer's cost per share. This is the number that becomes ordinary income — it is often far lower than the current value if you've been accumulating for many years. A $40,000 cost basis on $250,000 of stock is an 84% NUA ratio — a strong NUA candidate.
3. Trigger a qualifying LSD event. Most retirees use separation from service (retirement). If you're 59½ or older, you can also trigger an LSD without separating.
4. Request an in-kind distribution of employer stock. Tell your plan administrator you want the employer stock distributed in-kind to a taxable brokerage account. The remaining plan assets (bonds, index funds, other stock) can roll directly to a traditional IRA — no current tax on those.
5. Receive a 1099-R. The plan will issue a Form 1099-R. Box 6 will show the NUA amount. The cost basis in Box 2a is what you'll report as ordinary income. The NUA in Box 6 is not currently taxable — it's only taxed when you sell.
6. Hold or sell the stock. You can sell immediately (NUA taxed at LTCG rates — long-term rates apply to the NUA even if sold the next day). Any appreciation after the distribution date is short-term LTCG if sold within one year, long-term if held longer.
7. File correctly. On your tax return, report the cost basis as ordinary income. When you eventually sell, report the NUA gain as long-term capital gain regardless of holding period, plus any post-distribution appreciation at short-term or long-term rates as appropriate.

NUA and the 10% early withdrawal penalty

If you separate from service in or after the year you turn 55 (the Rule of 55 exception under IRC § 72(t)(2)(A)(v)), no 10% penalty applies to the cost basis. If you're under 55 at separation, the 10% penalty applies to the cost basis distributed — not the NUA — and it's due in the year of distribution. The penalty does not apply if you trigger the LSD at 59½ or due to disability or death.

The NUA amount itself is never subject to the 10% penalty. Only the cost basis (ordinary income portion) is at risk if you're under the age threshold.

Common mistakes

• Rolling everything to an IRA first, then trying to use NUA. Once assets are in an IRA, the NUA election is permanently lost. The LSD must happen while the assets are still in the qualified plan.
• Partial withdrawals. The LSD requires distributing the entire account balance within one tax year. Taking out just the employer stock without liquidating the rest of the plan disqualifies you from NUA treatment on any of it.
• Ignoring IRMAA. The cost basis is ordinary income in the year of distribution. If that income pushes your MAGI above IRMAA thresholds, your Medicare premiums could spike for two years (2026 Tier 1: $218,000 MFJ / $109,000 single). Use our SSA-44 appeal guide if you retire the same year.
• Forgetting state taxes. The NUA federal benefit assumes the NUA is taxed at preferential LTCG rates. Some states don't distinguish between ordinary income and capital gains — your state LTCG rate may equal your state ordinary income rate, reducing the NUA benefit.
• Concentrating further in a single stock. Holding appreciated employer stock creates concentration risk — you're betting retirement security on one company. The NUA strategy benefits most if you sell the stock quickly. Holding it to defer more LTCG means maintaining a concentrated position.
• Not getting cost basis in writing. The plan administrator's cost basis figure is the foundation of the entire strategy. Errors or disputes after the fact can be costly. Get it in writing before executing.

NUA in the context of your retirement tax plan

The NUA strategy typically works best in a specific retirement planning sequence:

1. Execute the LSD in your first year of retirement — ordinary income is often lowest before Social Security and RMDs begin, minimizing the IRMAA exposure from the cost basis hit.
2. Use the Roth conversion window (roughly age 60–73) to convert remaining traditional IRA assets at the brackets freed up after the LSD year. See our Roth conversion calculator.
3. Manage the LTCG from the employer stock sale against the 0% LTCG threshold. If your ordinary income is low enough, you may sell some or all of the stock at 0%. See our capital gains harvesting guide.
4. Plan RMDs around the reduced IRA balance. Moving company stock to a taxable account (rather than an IRA) reduces your IRA balance — meaning lower future RMDs. See our RMD calculator to model the difference.

The NUA decision interacts with Social Security timing, IRMAA, Roth conversions, and RMDs. It is one of the few retirement planning decisions that is truly irreversible. A fee-only financial advisor who specializes in retirement income can model the full multi-year picture and tell you whether the numbers actually work for your situation — not just the company stock in isolation.

Sources

1. IRS Publication 575 — Pension and Annuity Income. Covers LSD requirements and NUA tax treatment under IRC § 402(e)(4). Verified June 2026.
2. IRS Notice 98-24. Provides guidance on the tax treatment of NUA for employer stock in qualified plans.
3. IRS Rev. Proc. 2025-32. 2026 tax parameters including LTCG thresholds ($49,450 single / $98,900 MFJ for 0% rate; ~$533,400 single / ~$616,050 MFJ for 20% threshold).
4. IRC § 1411 — Net Investment Income Tax. 3.8% NIIT applies to net investment income (including NUA gains) when MAGI exceeds $200,000 single / $250,000 MFJ. Threshold not inflation-adjusted.
5. Kitces.com — NUA Tax Planning Analysis. Detailed examination of when NUA outperforms IRA rollover across tax rate scenarios.

Tax values verified against 2026 IRS guidance (Rev. Proc. 2025-32). IRC § 402(e)(4) NUA rules unchanged as of June 2026. OBBBA (July 2025) did not alter NUA mechanics, LTCG rates, or NIIT thresholds.