The Tax Break Hiding in Your 401(k)

How One Election on Employer Stock Can Quietly Shape Your Retirement Taxes

Most people think of their 401(k) as a single bucket. You put money in, it grows, and someday you pay taxes when you take it out. But for many working professionals, especially those who have spent years at the same company, that bucket is not as uniform as it seems. Inside it may be something that follows very different tax rules: employer stock.

If your retirement plan includes company shares, there is a often overlooked tax decision that can significantly affect how much of that money you keep. It is called a Net Unrealized Appreciation election, often shortened to NUA. For the right person, it can reduce lifetime taxes. In the wrong situation, it can introduce unnecessary risk or complexity.

The challenge is timing. This decision often appears during moments when people are already juggling major changes such as retirement, a job transition, or an unexpected life event. By then, it can feel rushed. Understanding it earlier creates options. Waiting too long can quietly close the door.

Employer stock in a workplace retirement plan typically builds up gradually. It may come from matching contributions, profit sharing, or stock bonus plans inside a 401(k) or similar retirement account. Over time, those shares can grow far beyond what the company originally contributed.

That growth matters because pre-tax retirement accounts usually convert everything inside them into ordinary income when withdrawn. Employer stock does not have to follow that rule if certain conditions are met. This is where tax planning for employer stock begins to diverge from tax planning for the rest of a retirement portfolio.

Net Unrealized Appreciation refers to the increase in value of employer stock while it remains inside a qualified retirement plan. An NUA election allows someone, at a specific moment, to take employer stock out of the plan in shares instead of rolling it into an IRA.

When done correctly, only the original cost of the shares is taxed as ordinary income at the time of distribution. The appreciation that occurred inside the plan is not taxed right away. Instead, it is taxed later, when the stock is sold, at long term capital gains rates regardless of how long the shares are held after distribution.

That single difference in how the growth is taxed is what gives NUA its potential value.

Without an NUA election, employer stock rolled into an IRA is treated like every other retirement dollar. All future withdrawals are taxed as ordinary income. With an NUA election, the tax picture changes. The original value becomes taxable in the year the shares leave the plan, while the built in growth is taxed later as capital gain. Any appreciation after distribution follows normal capital gains rules. For people who expect to be in a higher tax bracket later in retirement, or who already have substantial pretax savings, that difference can meaningfully reduce lifetime taxes.

This often surprises those who assume that retirement automatically means a lower tax bill. In practice, retirement income does not always decline the way people expect. We see this frequently among professionals in fields such as oil and gas and medicine. Long careers, strong earnings, and generous benefit structures can result in multiple income streams later in life. Pensions, deferred compensation, required minimum distributions, and even ongoing consulting or part time work can stack together, sometimes keeping taxable income elevated well into retirement.

In those situations, shifting the growth on employer stock from future ordinary income into long term capital gains can help rebalance the tax picture. Capital gains rates are often lower and more flexible than income tax rates, and they provide greater control over when taxes are triggered. For someone who has accumulated a meaningful amount of company stock inside a retirement plan, an NUA election can act as a pressure valve in an otherwise crowded income landscape.

While oil and gas and healthcare professionals encounter this dynamic often, it is far from exclusive to those industries. Executives, engineers, long tenured corporate employees, and anyone with layered retirement benefits may face a similar outcome. The common thread is not the profession itself, but the combination of employer stock and higher than typical retirement income.

That said, NUA is not a universal solution. In some cases, it can create new challenges that outweigh the benefits.

One of the most important considerations is concentration risk. Many people already have significant exposure to their employer through salary, benefits, and career stability. Moving a large block of company stock into a taxable account can further concentrate risk, particularly in industries that experience cycles, regulatory shifts, or market volatility.

Timing also matters. Because the original value of the stock becomes taxable in the year it leaves the retirement plan, an NUA election can increase income in a year that is already full. Retirement, bonuses, pension start dates, or final compensation payouts can all converge at once. If not carefully coordinated, that spike can reduce or even eliminate the intended tax benefit.

For individuals who truly expect to be in a much lower tax bracket later, the simplicity of rolling employer stock into an IRA may be perfectly reasonable. Paying ordinary income tax at a lower rate in the future can outweigh the advantages of NUA, especially when it avoids added complexity and investment risk.

What makes this decision particularly important is that it is largely a onetime opportunity. An NUA election is only available during a full lump sum distribution following a triggering event such as retirement or separation from service. Once employer stock is rolled into an IRA, the option is gone.

This is why automatic or well intentioned rollovers can inadvertently close the door before the question is ever asked.

Unlike many financial decisions, NUA elections are not easily undone. You either take the shares out correctly at the right moment, or you do not. That is why this conversation is less about market timing and more about understanding the rules early enough to preserve flexibility.

At McGee Wealth Management, these discussions often happen years before retirement, precisely because the best tax decisions are rarely made under pressure.

Looking ahead, tax planning is becoming less about clever strategies and more about thoughtful sequencing. Employer stock sits at the intersection of income taxes, investment risk, and retirement timing. As more professionals enter retirement with meaningful company stock positions, understanding NUA is becoming less optional and more foundational.

Not everyone should use it. But everyone who holds employer stock should understand how it works.

The most expensive tax mistakes are rarely dramatic. They are quiet. They come from default decisions made during busy moments. NUA is not about finding a loophole. It is about recognizing that employer stock plays by different rules and deciding, calmly and deliberately, how those rules fit into the bigger picture.

For those who take the time to understand it before the decision window opens, the payoff is not just potential tax savings. It is confidence.

This article was originally published in the April 2026 edition of Investor Magazine.