NUA on Company Stock: The Million-Dollar Election Most 401(k) Participants Never Hear About

What NUA actually is

NUA stands for Net Unrealized Appreciation. It's an IRS provision (Internal Revenue Code § 402(e)(4)) that applies when employer stock is held inside a qualified retirement plan like a 401(k) or ESOP.

Here's the mechanics. Suppose you've worked at a publicly-traded company for 20 years. Over those 20 years, your 401(k) has accumulated company stock worth $500,000 today. Your cost basis (what was originally paid for those shares from your contributions and the employer match) is $50,000. The "Net Unrealized Appreciation" is $450,000 — the embedded gain.

Under the normal rollover process, you'd roll the entire 401(k) (including company stock) into an IRA. Every dollar that later comes out of that IRA is taxed as ordinary income at your marginal rate. For most employees, that's 22-32% federal plus state.

The NUA election lets you do something dramatically different:

1. Distribute the company stock in kind (the actual shares) to a regular taxable brokerage account, not an IRA.
2. Roll the rest of the 401(k) (non-employer-stock assets) into an IRA normally.
3. Pay ordinary income tax only on the $50,000 cost basis in the year of distribution.
4. The $450,000 of appreciation is now "outside" the IRA wrapper — sitting as taxable stock with a built-in unrealized gain.
5. When you sell the stock later, the $450,000 gain is taxed at long-term capital gains rates (0%, 15%, or 20% federal), not ordinary income.

That's the entire game. Move the appreciation out of the IRA wrapper at one moment in time, then sell at LTCG rates.

Why this saves so much money

The savings come from the gap between ordinary income rates and long-term capital gains rates:

This is just the federal savings. State savings stack on top — California is the cruelest because it taxes both ordinary income AND capital gains at the same 9.3% rate, so the state benefit is smaller — but most other states tax capital gains favorably or not at all.

Two additional benefits that often dwarf the headline savings:

• Step-up basis at death. If you hold the NUA shares until death, your heirs get a step-up in basis on the appreciation that occurred after the NUA distribution. The pre-NUA appreciation does NOT get stepped up (it's "income in respect of a decedent"), but everything from the distribution date forward does.
• No future RMDs on the stock. Money in a taxable brokerage account has no RMDs, no distribution requirements, and no IRMAA-spike risk from forced withdrawals. The stock can sit until you want to sell it.

The strict eligibility rules

NUA is powerful but has narrow eligibility windows. To qualify, you must meet ALL of these:

1. Triggering event. You must have a qualifying triggering event: separation from service (retiring or leaving the company), reaching age 59½, total disability, or death.
2. Lump-sum distribution. You must take a "lump-sum distribution" — meaning the entire balance of all qualified plans of the same type with the employer is distributed in a single tax year. Partial distributions kill the eligibility.
3. Direct distribution of stock. The employer stock must come out of the plan as actual shares, not as cash. If the plan sells the stock and gives you cash, NUA is gone.
4. Single tax year. The lump-sum distribution must happen within one tax year. This is administrative but critical — coordinate with the plan administrator on timing.

If you have an existing rollover IRA from a previous job that's "tainted" the NUA election, that can disqualify you. The rules are technical. A single misstep can permanently eliminate the option.

If you're considering NUA, work with a tax professional or financial advisor who has actually executed it. The mechanics are documented in IRS Notice 98-24 and Revenue Ruling 2004-12, but the operational mistakes are easy to make.

When NUA is right — and when it isn't

NUA is right when ALL of the following are true:

• You have meaningful employer stock in your 401(k) — typically $100K+ of accumulated value
• The cost basis is low relative to current value (less than 50% is a strong indicator)
• You have a triggering event coming or already happened
• You don't need to sell the stock immediately (you can hold for LTCG qualifying period or longer)
• Your expected ordinary income tax bracket in retirement is meaningfully higher than the LTCG bracket — typically true for almost all high-balance retirees

NUA is NOT right when:

• Your cost basis is close to current value (the embedded gain is small, so the LTCG savings are small)
• You need to sell the stock immediately and can't hold for at least one year (short-term capital gains are taxed at ordinary rates anyway)
• You're heavily over-concentrated in employer stock and the right risk-management answer is to diversify immediately (the NUA savings might be eclipsed by single-stock risk)
• You don't have a clean triggering event yet (you'll likely lose NUA eligibility by continuing to participate)

The decision is almost always a one-shot, no-do-overs choice. Once you roll the 401(k) into an IRA without electing NUA, the option is gone forever.

How NUA interacts with Roth conversions

NUA and Roth conversions can be combined. The typical sequence:

1. Year of separation: Distribute the employer stock as NUA shares. Pay ordinary tax on the cost basis (a relatively small number). Roll the rest of the 401(k) to an IRA.
2. Subsequent years: Convert IRA dollars to Roth deliberately under your normal conversion ladder. The NUA shares sit in taxable brokerage, generating qualified dividends (if any) and accumulating capital gain.
3. Sale of NUA shares: Sell when needed at LTCG rates. Time sales to coordinate with other income (low-income year = 0% LTCG opportunity if total taxable income stays under $98,900 MFJ in 2026).
4. If held to death: Heirs receive step-up basis on the post-distribution appreciation, avoiding tax on that portion entirely.

For executives with significant company stock positions, this combined NUA + Roth conversion approach often reduces lifetime family tax by $200K-$500K+. The NUA decision must happen FIRST — it's a one-time event triggered by separation. Roth conversions can happen for years afterward.

What to actually do

If you have employer stock in your 401(k) and are within 5 years of separation from service:

1. Pull your 401(k) statement and find the cost-basis breakdown for employer stock. Most plan administrators can give you a separate "NUA-eligible" cost basis number. If they can't, that's a yellow flag — keep pushing.
2. Calculate the embedded NUA. Current value minus cost basis = NUA. If it's $100K+, run the full analysis.
3. Project your expected ordinary income tax bracket in retirement. If it's 22%+, NUA is likely in play.
4. Project your LTCG bracket. 0%, 15%, or 20% federal. The gap between this and your ordinary rate is your per-dollar savings.
5. Get a tax professional to confirm eligibility and structure the distribution. This is not a DIY operation. The execution requires coordination with the plan administrator on timing, share certificate delivery, and 1099-R reporting.
6. Don't roll the 401(k) into an IRA "to think about it later." That single step can permanently eliminate the option.

The workshop linked below walks through NUA examples and shows the eligibility-decision-tree for different employer-stock scenarios.