Before You Roll Company Stock Into an IRA: Understand NUA

Short answer: if a 401(k) or other qualified employer plan contains highly appreciated employer stock, rolling everything automatically into a Traditional IRA can give up a special tax rule called net unrealized appreciation (NUA). Under qualifying circumstances, the stock’s cost basis is generally taxed as ordinary income when distributed, while the NUA can be deferred until the stock is sold and then treated as long-term capital gain.¹²

1. What is net unrealized appreciation?

NUA is generally the increase in value of employer securities while they were held inside the employer’s qualified retirement plan. IRS Publication 575 describes it as the net increase in the securities’ value while they were in the trust.¹

Imagine employer stock inside a 401(k) with:

The $140,000 difference is the simplified NUA in this illustration.

2. What is the potential tax advantage?

For qualifying employer securities distributed under the NUA rules, the NUA generally is not taxed at the time of distribution. When the shares are later sold, the deferred NUA portion is treated as long-term capital gain. Appreciation that occurs after the stock leaves the plan is treated as long- or short-term gain depending on how long the shares are held after distribution.¹

The stock’s basis, by contrast, is generally included in ordinary taxable income when the shares are distributed under the strategy.

3. What happens if you roll the employer stock into a Traditional IRA?

A normal direct rollover to a Traditional IRA can defer current tax. That is valuable and often makes sense.

But IRA distributions are generally taxed under the ordinary retirement-account rules. IRS guidance says that if employer stock is rolled to an IRA or another plan, the special NUA rule generally will not apply to later payments from the IRA or plan.²³

That is why this topic belongs before the rollover paperwork, not after it.

4. The lump-sum rules are strict

The full NUA treatment is not simply available whenever someone owns employer stock in a 401(k). IRS Publication 575 describes a qualifying lump-sum distribution for this purpose as the distribution of the participant’s entire balance within a single tax year from all of the employer’s qualified plans of one kind, paid because of one of specified events.¹

Those events include:

• the participant’s death,
• the participant reaching age 59½,
• separation from service for an employee, or
• total and permanent disability for a self-employed participant.

Plan history and prior distributions can complicate qualification. A taxpayer considering NUA should verify the exact facts with the plan administrator and a tax professional familiar with Section 402(e)(4).

5. “Entire balance” does not necessarily mean “all taxable today”

A common misunderstanding is that using NUA means taking every dollar of the 401(k) as taxable cash.

In a properly structured transaction, employer shares may be distributed in kind to a taxable brokerage account while other eligible plan assets are rolled directly to an IRA or another qualified plan. The key is satisfying the applicable lump-sum distribution rules for the entire plan balance within the tax year, not necessarily putting every asset into the same destination.¹

This is precisely the sort of transaction where execution details matter. Do not rely on a generic “roll over my 401(k)” instruction if NUA is under consideration.

6. NUA versus a full IRA rollover

7. Why NUA is not automatically a tax win

The phrase “capital-gains treatment” can make NUA sound obviously better. It is not.

8. Concentration risk may be more important than the tax rule

Employees can accumulate large employer-stock positions because of matching contributions, stock awards or years of strong company performance. FINRA specifically identifies company stock concentration as a form of concentration risk that can amplify losses when too much of a portfolio depends on one company.⁴

The risk can be especially uncomfortable because employment income and investment wealth may be tied to the same company at the same time.

9. A simplified comparison

Return to the hypothetical $200,000 employer-stock position with a $60,000 basis and $140,000 of NUA.

This table intentionally leaves out tax rates. The point is to show what is being taxed and when. The best result changes with the investor’s actual marginal rates, capital-gain rates, state tax, Medicare status, charitable plans, estate goals and time horizon.

10. A Roth conversion is a third path worth recognizing

The choice is not always “NUA or Traditional IRA.” Some investors may also consider Roth strategies. A Roth conversion generally creates ordinary income now but can move assets toward qualified tax-free withdrawals later.

That does not make Roth better than NUA. It means the comparison can involve three different tax timelines:

• Traditional IRA: defer tax now; ordinary income generally later.
• NUA: ordinary income on basis now; deferred NUA potentially taxed later at long-term capital-gain rates.
• Roth: ordinary income on conversion now; qualified withdrawals potentially tax-free later.

This is why Terra would not reduce NUA to a one-click calculator.

11. Questions to ask before signing rollover paperwork

1. How much employer stock is actually in the plan?Get the number of shares, current value and plan cost basis.
2. What is the NUA?Your plan administrator may be able to provide the NUA amount, which is also relevant to Form 1099-R reporting.
3. Have I had the required qualifying event?Age 59½, separation from service, death or the applicable disability event are central to the lump-sum rules.
4. Can the entire applicable plan balance be distributed within one tax year?Confirm how all related qualified plans of the same kind are treated.
5. What ordinary tax would the stock basis create now?Include federal and state tax and consider Medicare IRMAA if applicable.
6. What capital-gain rate would likely apply when the stock is sold?Do not compare rates without considering timing and the value of tax deferral.
7. How concentrated would I be after the distribution?Decide how quickly the stock would be diversified if risk reduction is the goal.
8. What happens if I simply roll it all to an IRA?Compare the simplicity and continued deferral with the loss of the special NUA treatment.

12. What this guide does not say

This guide does not say that NUA is better than an IRA rollover, that employer stock should be held indefinitely or that every employer-stock distribution qualifies. NUA is a technical tax option whose value depends on the facts.

The useful Terra lesson is simpler: if highly appreciated company stock is inside a workplace plan, identify the NUA question before completing the rollover.

Primary and regulatory references

1. Internal Revenue Service — Publication 575, Pension and Annuity Income. Defines NUA, describes qualifying employer securities, the lump-sum distribution requirements and the tax treatment when the shares are later sold. IRS · Publication 575
2. Internal Revenue Service — Topic No. 412, Lump-Sum Distributions. Explains NUA reporting and notes that after a rollover, regular IRA distribution rules apply and special lump-sum treatment cannot be used for later IRA distributions. IRS · Topic 412
3. Internal Revenue Service — 2026 Safe Harbor Explanations / rollover guidance. Explains that when employer stock is rolled to an IRA or another plan, the special NUA rule generally does not apply to later payments from that account. IRS · 2026 rollover guidance
4. FINRA — Concentrate on Concentration Risk. Identifies employer-stock concentration as a form of concentration risk and explains why diversification should be reviewed across the whole portfolio. FINRA · Concentration risk

Educational information only. NUA rules are highly fact-specific, and plan documents, prior distributions, withholding, tax brackets, state tax and transaction timing can change the outcome. Verify eligibility with the plan administrator and consider qualified tax advice before executing a distribution or rollover involving employer securities.

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