NUA for GM Retirees: The Company-Stock Tax Strategy a Standard 401(k) Rollover Can Forfeit

If you spent twenty or more years on the floor at a GM assembly plant in Metro Detroit, in an engineering role in Warren or Pontiac, or in a corporate function at the GM Renaissance Center, there is a fair chance you have accumulated something beyond your pension and Social Security: a meaningful block of General Motors common stock inside your GM 401(k) Savings Plan.

Most retiring employees — and many financial professionals — treat that 401(k) balance the same way: roll the entire thing into a Traditional IRA, keep it tax-deferred, and withdraw money over time in retirement. It is a reasonable default, but for employees who hold appreciated company stock, it may not be the optimal default.

There is an alternative tax treatment written into the Internal Revenue Code — Net Unrealized Appreciation (NUA) — that allows qualifying retirees to distribute company stock in kind out of their 401(k) and pay ordinary income tax only on their original cost basis, while the difference between that basis and the market value of the stock at distribution is taxed later, at long-term capital gains rates, when the stock is eventually sold.

Given the tax-rate spread between ordinary income (up to 37% federally in 2026) and long-term capital gains (0%, 15%, or 20% depending on income, plus the 3.8% Net Investment Income Tax at higher brackets), this distinction can represent a significant, permanently locked-in tax advantage — one that a standard IRA rollover permanently forfeits.

This article explains how NUA works, which GM retirees are most likely to benefit, the qualifying rules and common tripwires, a balanced look at when NUA is the wrong move, and how NUA fits into a broader Metro Detroit retirement income plan.

What Is Net Unrealized Appreciation?

Net Unrealized Appreciation is the difference between the fair market value of employer securities at the time of distribution and the original cost basis of those securities inside the retirement plan.

Under IRC Section 402(e)(4), when a qualifying lump-sum distribution is made from an employer-sponsored qualified plan, the employer securities included in that distribution receive special tax treatment:

• The cost basis (what the plan originally paid for the shares, including employer matches and employee contributions attributed to those shares) is taxed as ordinary income in the year of the distribution.
• The NUA — all of the appreciation built up inside the plan above that original cost basis — is not taxed at distribution. It is taxed only when you eventually sell the stock, and it is taxed at long-term capital gains rates, regardless of how long you actually hold the shares after distribution.
• Any additional appreciation that accrues after the distribution date (post-distribution growth) is taxed as ordinary short-term or long-term capital gains depending on your holding period from the distribution date.

The stock must be distributed in kind — meaning the actual shares must be transferred to a taxable brokerage account, not sold inside the plan and rolled over as cash. Once those shares are sitting in a taxable account, the favorable NUA tax treatment is locked in.

The GM Retiree Profile: Why This Matters in Metro Detroit

For long-tenure General Motors employees, the NUA strategy is relevant for a specific reason: GM’s 401(k) Savings Plan has historically offered GM common stock as an investment option, and many employees — particularly those hired before the company’s 2009 restructuring — accumulated meaningful positions in company stock over decades of automatic payroll contributions and employer matching contributions.

The profile of a GM retiree for whom NUA deserves serious analysis typically looks like this:

• Long tenure: 20 to 35+ years of service, meaning decades of accumulated company stock contributions at various historical price levels
• Low average cost basis: If stock was purchased in small lots over many years at varying price points — including prices from the 2009–2012 recovery period after GM’s restructuring — the blended cost basis can be significantly lower than the current market price
• Large unrealized gain relative to basis: The ratio of NUA to cost basis is the key driver. The larger that spread, the more tax the NUA strategy can potentially save
• Pension election context: GM retirees with a pension are already receiving guaranteed monthly income, which changes the calculus on how aggressively they need to draw down their 401(k) immediately — creating flexibility in how and when they distribute the taxable company stock

If you are nearing retirement with GM stock inside your 401(k) that has appreciated significantly above its original cost basis, and you are eligible for a lump-sum distribution, NUA deserves a careful modeling conversation before you process any rollover paperwork.

How the NUA Math Works: A Hypothetical Illustration

The following example is hypothetical and illustrative only. It does not represent a prediction, projection, or guarantee of any specific tax result. Individual outcomes depend on your personal cost basis, the current market value of your shares, your income in the year of distribution, your filing status, your state tax situation, and other factors. Always confirm the numbers with your plan administrator and a qualified CPA before taking action.

Illustrative Example — For Education Only, Not a Guarantee

A hypothetical GM retiree, age 62, holds 2,000 shares of GM common stock inside their 401(k). The plan’s record-keeping system shows an average cost basis of $18 per share (the plan’s cost, accumulated over many years of payroll contributions and employer matching). The current market value of GM shares at the time of distribution is $55 per share.

• Total cost basis: 2,000 × $18 = $36,000
• Current market value: 2,000 × $55 = $110,000
• Net Unrealized Appreciation: $110,000 − $36,000 = $74,000

Under a standard IRA rollover, the entire $110,000 would move into a Traditional IRA and every dollar of future withdrawal would be taxed as ordinary income. If this retiree is in the 22% federal bracket in retirement, the full $110,000 eventually generates approximately $24,200 in federal ordinary income tax (simplified; actual tax depends on when and how distributions are taken, future brackets, etc.).

Under an NUA in-kind distribution, the retiree pays ordinary income tax on the $36,000 cost basis in the year of distribution. If they are in the 22% bracket, that is approximately $7,920 in federal ordinary income tax now. The remaining $74,000 of NUA is taxed at long-term capital gains rates when eventually sold — at 15% for most middle-income retirees, that is approximately $11,100.

Total illustrative tax under NUA: ~$19,020 vs. ~$24,200 under a full IRA rollover — a hypothetical tax savings of ~$5,180 in this simplified scenario. Actual results will vary materially based on individual circumstances.

The actual advantage grows when the NUA/basis ratio is high, when the retiree’s ordinary income rate is well above their long-term capital gains rate, and when state taxes offer a preferential rate on capital gains.

NUA vs. Standard IRA Rollover: Side-by-Side Comparison

The Qualifying Rules: Four Requirements You Must Meet

NUA is not available to everyone. There are four technical requirements under IRC 402(e)(4) that must all be satisfied simultaneously:

1. Qualifying Triggering Event

You must have experienced one of the four IRS-recognized triggering events:

• Separation from service (retirement, termination, or resignation from GM)
• Reaching age 59½
• Death
• Total and permanent disability

For most GM retirees, separation from service is the triggering event — meaning the NUA distribution must occur in connection with your actual retirement from General Motors.

2. Lump-Sum Distribution Requirement

This is the most commonly missed rule. The NUA in-kind distribution must be part of a lump-sum distribution of your entire account balance from the plan within a single tax year. You cannot cherry-pick: take the company stock in kind, leave the rest in the plan, and still qualify for NUA treatment.

You must distribute the entire 401(k) balance within the same tax year. The rest of the balance (non-stock assets like mutual funds, bonds, or stable value funds) can be rolled over into a Traditional IRA in the same year — only the company stock shares are distributed in kind to a taxable brokerage account.

3. Actual Employer Securities (Not Unitized Stock Funds)

The NUA rules apply to actual shares of employer stock — meaning the plan must hold shares of GM common stock in your account, not a unitized fund that tracks GM stock but does not directly hold the shares.

If your 401(k) holds a “GM Stock Fund” that is a commingled pool managed by a trustee rather than direct-registered shares of GM common, those units may not qualify for NUA treatment in the same way. Your plan administrator and a qualified CPA must confirm whether your specific holdings are structured as actual employer securities under the plan’s documentation.

4. Plan Must Be a Qualifying Plan

The plan must be a tax-qualified employer plan under IRC Section 401(a) — which GM’s 401(k) Savings Plan is — a 403(b) plan, a 457(b) plan, or a stock bonus plan. IRAs do not qualify for NUA treatment.

The Under-59½ Penalty Tripwire

If you take the NUA distribution before age 59½ and have not met one of the other triggering events (disability or separation from service under a plan that allows penalty-free separation distributions), the cost basis portion of the distribution may be subject to a 10% early withdrawal penalty. The NUA itself is generally not subject to the 10% penalty at the time of distribution — only the cost basis amount is.

For GM retirees taking early retirement under a separation incentive before age 59½, this is a critical variable to model. The cost basis might be small enough relative to the total benefit that the penalty is still worth paying — or it may not be. A CPA must run the numbers for your specific situation.

When NUA Is the Wrong Move

NUA is a tax tool, not a universal strategy. There are real scenarios where a standard IRA rollover is the better choice for a GM retiree:

1. Low NUA relative to basis. If your GM shares have not appreciated significantly, or if your average cost basis is close to the current market price, the long-term capital gains advantage over ordinary income rates may not be large enough to justify the complexity and the immediate tax bill on the cost basis.

2. High ordinary income in the distribution year.The year you take the NUA distribution, the cost basis is fully taxable as ordinary income. If you are also receiving a large GM pension, significant Social Security income, or income from a partial-year salary, your tax bracket in that year may be high enough to erode the strategy’s value. Timing matters.

3. Concentration risk you are not prepared to manage.Taking GM shares in kind means holding a large, undiversified position in a single employer’s stock in a taxable account. If GM experiences financial difficulty, a strike, or a structural disruption to its business, that concentrated position can fall sharply. The tax savings from NUA must be weighed against the risk of holding a meaningful percentage of your retirement assets in one company. Many retirees accept this risk only if they intend to sell the stock within a relatively short window after distribution.

4. Short time horizon. If you expect to sell the stock very quickly after distribution, the NUA becomes short-term capital gain (not long-term), and the rate advantage largely disappears. The long-term capital gains rate only applies if you hold the shares for more than one year after distribution — note that the NUA itself qualifies for long-term capital gains treatment regardless of holding period, but any post-distribution appreciation is subject to normal holding period rules.

5. Michigan state tax considerations. Michigan taxes ordinary income and capital gains at the same flat rate (currently 4.25%), which reduces (but does not eliminate) the NUA advantage relative to states that offer differential capital gains treatment. The federal rate spread still applies, but the state benefit is less pronounced for Michigan residents.

6. Medicare IRMAA exposure. A large ordinary income distribution in the year you take the NUA cost basis may spike your Modified Adjusted Gross Income (MAGI), pushing you above an IRMAA threshold and triggering Medicare premium surcharges two years later. If you are 63 or older at the time of distribution, this must be modeled carefully. See our guide on Roth conversion planning for a deeper discussion of IRMAA cliffs: Roth Conversion Strategy for Michigan Pre-Retirees.

7. Estate distribution simplicity. If simplifying your estate for heirs is a priority, a single IRA rollover may be administratively cleaner than a combination of an IRA (for the non-stock assets) and a taxable brokerage account (for the in-kind shares).

How NUA Fits Into Your Broader GM Retirement Plan

NUA does not exist in isolation. It is one piece of a retirement income puzzle that, for most long-tenure GM retirees, includes several interlocking components:

Pension Election

If you are eligible for a GM pension benefit, your pension election — single life, joint-and-survivor, or lump-sum rollover — shapes your income floor for the rest of your life. The pension decision fundamentally affects how urgently you need to liquidate 401(k) assets to fund living expenses, which in turn affects whether the NUA strategy’s tax deferral is worth the complexity. For a detailed discussion of pension election options, see: Pension Election Options for Michigan Retirees.

Roth Conversion Coordination

The year of an NUA distribution — when a potentially large ordinary income amount is already hitting your return from the cost basis — is almost certainly not the year to also run a Roth conversion. But in the years following, once the NUA stock is in your taxable account and your taxable income returns to a lower level, the Roth conversion window may reopen. Coordinating the NUA year with the subsequent Roth conversion calendar is an important sequencing exercise. See: Roth Conversion Strategy for Michigan Pre-Retirees.

Required Minimum Distributions

One of NUA’s structural advantages is that stock held in a taxable brokerage account is not subject to RMDs. This creates permanent flexibility: you can hold the stock, sell it on your own timeline, and let it compound without being forced to liquidate at an IRS-mandated rate. By contrast, assets left in a Traditional IRA — including the non-stock assets rolled over in the same distribution year — will eventually become subject to RMDs. Planning around RMD exposure from the non-NUA IRA assets is a critical complement to the NUA strategy. For a primer on RMD rules under the SECURE 2.0 Act, see: RMD Basics: A Guide for Retirees.

Fixed Index Annuities and Income Planning

For some GM retirees who take the NUA distribution but are uncomfortable holding a large, undiversified position in GM stock indefinitely, one planning path is to sell the NUA shares over time and reallocate a portion of the proceeds toward guaranteed income products that can supplement the pension and Social Security floors. Fixed Index Annuities (FIAs) are one such product: they offer principal protection from market downturns and can provide a structured income stream, which may appeal to retirees who want to reduce equity concentration without simply re-investing in a volatile stock portfolio.

It is important to note that FIAs carry their own trade-offs: participation in market gains is typically capped or limited through a participation rate or spread, liquidity is restricted during the surrender period, and income guarantees depend entirely on the financial strength and claims-paying ability of the issuing insurance company. A FIA is not appropriate for every retiree or every dollar. Consult a licensed insurance professional and evaluate the specific contract terms carefully before purchasing.

A Note on Plan Documentation and Plan Administrator Confirmation

The rules described in this article reflect the general provisions of IRC Section 402(e)(4) as of the date of publication. However, the actual availability and terms of the NUA distribution option depend on:

• Your specific plan documents: GM’s 401(k) Savings Plan documents govern exactly how distributions are structured and whether the plan will facilitate an in-kind distribution of company stock to a taxable brokerage account.
• The cost basis records maintained by the plan trustee: Your plan administrator or record-keeper should be able to provide the cost basis information for your company stock holdings. Confirm this number before initiating any distribution.
• Your personal tax situation: The NUA calculation is straightforward in concept but complex in execution. Your CPA must model the distribution against your full income picture for the year of distribution, including pension income, Social Security timing, and any other income sources.

Never initiate an NUA distribution without a written confirmation of your cost basis from the plan administrator and a green light from your CPA.

Frequently Asked Questions

Does the NUA strategy work if I already rolled my 401(k) into an IRA?

No. Once employer securities have been rolled over into a Traditional IRA, the NUA tax treatment is permanently lost. The shares lose their identity as “employer securities distributed from a qualified plan” the moment they enter an IRA. This is precisely why the NUA decision must be evaluated before you process any rollover — typically in the weeks between your retirement date and when you initiate the rollover paperwork.

Can I do NUA on just part of my GM stock, and roll the rest to an IRA?

No. The lump-sum distribution requirement means the entire account balance must be distributed within one tax year. You can choose to distribute some shares in kind (to a taxable brokerage) and roll the rest of the non-stock assets to an IRA, but you cannot leave any assets in the original GM 401(k) plan after the distribution year.

Is the NUA amount subject to the 10% early withdrawal penalty?

Generally, no — the NUA itself (the appreciation built up inside the plan) is not subject to the 10% early withdrawal penalty at the time of distribution. However, the cost basis portiondistributed may be subject to the penalty if you are under age 59½ and have not met another penalty exception. Consult a CPA for your specific situation.

What happens to my NUA shares when I die?

Appreciated NUA shares held in a taxable brokerage account at your death receive a step-up in cost basisto the fair market value on the date of death (under current estate tax law). This means your heirs’ capital gains tax exposure on the NUA appreciation is effectively eliminated if they inherit the shares — a potentially significant estate planning benefit that is not available to IRA assets, which heirs must withdraw as ordinary income under the SECURE Act’s 10-year rule.

Do I pay Michigan state income tax on the NUA distribution?

Michigan does not currently have a preferential rate for long-term capital gains — both ordinary income and capital gains are taxed at the same flat rate. This means the NUA advantage in Michigan is driven primarily by the federal rate spread between ordinary income and long-term capital gains rates, not the state rate. Your overall tax benefit should be modeled at the combined federal and Michigan rate level.

How do I find my cost basis inside the GM 401(k) plan?

Contact the plan record-keeper (Fidelity administers the GM 401(k) Savings Plan as of this writing — confirm with your most recent plan statement) and ask specifically for the cost basis of your company stock holdings. You need the plan’s cost basis, not the current market value. Some plans maintain this data in detail; others may have limited records, particularly for employees with very long tenure. Obtaining this number is a prerequisite for the NUA analysis.

Secure Your Free Retirement Check-Up

If you are a long-tenure GM employee approaching retirement in Metro Detroit — whether you are in Bloomfield Hills, Troy, Auburn Hills, Warren, or anywhere in Oakland County — the NUA decision is exactly the kind of detail that slips through the cracks when you are focused on exit paperwork, pension elections, and health insurance transitions.

At Panic Proof Retirement™, we sit down with corporate retirees and walk through these decisions before a rollover is processed. We will review your 401(k) holdings, help you understand whether NUA is worth modeling for your specific situation, and coordinate the analysis with your pension election, your Social Security timing, and your broader retirement income plan.

We offer a Free Retirement Check-Up — a 30-to-60-minute, educational consultation at no cost and with zero obligation. There is no product to sell you in that session. It is simply a structured conversation about your numbers, your options, and your next steps.

Schedule your Free Retirement Check-Up at Panic Proof Retirement™ / Bridgeriver Advisors, serving Metro Detroit, Oakland County, Bloomfield Hills, Troy, and Auburn Hills.

Important disclosures: This article is for educational purposes only and does not constitute individualized tax, legal, investment, or insurance advice. Net Unrealized Appreciation eligibility and tax treatment depend on individual circumstances, plan documentation, and applicable law at the time of distribution. Always consult a qualified CPA and your plan administrator before initiating any distribution. Panic Proof Retirement™ and Bridgeriver Advisors are not affiliated with, endorsed by, or sponsored by General Motors Company or any of its benefit plans. “GM,” “General Motors,” and any plan names are trademarks of their respective owners, referenced solely to identify plans discussed in an educational context. Fixed index annuity guarantees, including income riders, depend on the claims-paying ability of the issuing insurance company. FIAs involve surrender charges, participation caps, and liquidity restrictions. Fixed index annuities are insurance products, not securities.