You've probably heard of capital gains tax, but did you know it applies to 401k accounts too? This is because 401k accounts are considered investment vehicles.
To qualify for a 401k account, you must have a job that offers one, and you'll typically contribute a portion of your paycheck to it. This money is then invested in a variety of assets, such as stocks, bonds, or mutual funds.
The value of your 401k account can fluctuate over time, just like any other investment. If you withdraw funds from your 401k account before age 59 1/2, you may face penalties and taxes on the withdrawals.
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What You Need to Know
If you have a 401(k) account with employer stock, you might be better off transferring those shares to a brokerage account or cashing out when you leave your job.
The NUA tax rules can reduce the immediate tax hit and apply more-favorable long-term capital gains tax rates (0%, 15%, or 20%) when you eventually sell the employer stock.
If you pull the company stock out of your former employer's 401(k) plan in a lump-sum distribution, tax is deferred on the NUA until you sell the stock.
You still must pay tax on your cost basis at your ordinary tax rate.
When you do sell the company stock, the NUA is taxed at the rates for long-term capital gain.
Any gain exceeding the NUA - the gain since taking the stock out of the former employer's 401(k) plan - is taxed as long-term or short-term capital gain, depending on how long you held the stock after pulling it out of the 401(k) account.
Here are the long-term capital gains tax rates:
For NUA to make sense, it's a race between what tax rate you would pay if the money were distributed from a Rollover IRA and distributed at ordinary income tax rates versus the long-term capital gains tax rate if NUA is elected.
If you're married filing jointly in 2025 and your income is less than $96,700, you can pay 0% on your long-term capital gains.
The difference between ordinary income tax rates and long-term capital gains rates is huge.
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Tax Implications
If your 401(k) account includes shares of your employer's stock, you might be better off transferring those shares to a brokerage account or cashing out when you leave your job to reduce the immediate tax hit.
The NUA tax rules can be used to defer tax on the net unrealized appreciation (NUA) until you sell the stock, and then apply the more-favorable long-term capital gains tax rates (0%, 15%, or 20%) when you eventually sell the employer stock.
Here's how the NUA rules generally work:
- If you pull the company stock out of your former employer's 401(k) plan in a lump-sum distribution, tax is deferred on the NUA until you sell the stock (you still must pay tax on your cost basis at your ordinary tax rate).
- When you do sell the company stock, the NUA is taxed at the rates for long-term capital gain.
- Any gain exceeding the NUA - the gain since taking the stock out of the former employer's 401(k) plan - is taxed as long-term or short-term capital gain, depending on how long you held the stock after pulling it out of the 401(k) account (short-term gains are taxed at your ordinary tax rate).
You can elect to include NUA in your taxable income for the tax year you receive it, which might allow you to use an alternative method like the "20% capital gain election" or "10-year tax option" if you were born before January 2, 1936.
Strategies and Planning
If you have highly appreciated company stock in your 401(k), the Net Unrealized Appreciation (NUA) strategy can significantly reduce your tax bill later in retirement. This strategy involves transferring the appreciated stock to a taxable brokerage account, where it will be taxed at long-term capital gains rates instead of ordinary income rates.
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To qualify for NUA treatment, you must have employer stock in your 401(k) plan, which can include 401(k) plans and employee stock ownership plans (ESOPs). The NUA strategy can be complex, but it's worth exploring if you have a significant amount of appreciated company stock in your 401(k).
Here are the key benefits of the NUA strategy:
- Tax on the cost basis (historic cost) of the stock is paid immediately
- The appreciation in the stock is taxed at long-term capital gains rates when sold
- This can result in significant tax savings, especially if you have a large amount of appreciated company stock
To illustrate the NUA strategy, let's consider an example from Example 6: "Scenario Comparison and Assumptions". In this example, a client with a 401(k) account has a total balance of $200,000, with a cost basis of $30,000. The client elects NUA treatment, which results in a total tax bill of $32,700, compared to $48,000 if the typical rollover method is used.
Here's a summary of the NUA strategy in bullet form:
- Transfer appreciated company stock to a taxable brokerage account
- Pay tax on the cost basis of the stock immediately
- Appreciation in the stock is taxed at long-term capital gains rates when sold
- Can result in significant tax savings, especially for large amounts of appreciated company stock
401(k) Rollover and Distribution
A 401(k) rollover can be a complex process, and it's not just about transferring your balance to a new account. For employees with company stock in their 401(k), missing the window to make the NUA election can cost thousands of dollars in additional taxes in their retirement years.
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If you're planning to leave your company, it's essential to request NUA treatment of your company stock within your 401(k) account to avoid this costly mistake. Tim, for example, missed this opportunity and could have saved thousands of dollars in taxes.
The timing of the NUA distribution can also impact your taxes. If you retire in September, it may be beneficial to process the rollover from the 401(k) with the NUA to the brokerage account the following tax year, when your W-2 income is completely off the table.
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Rollover Mistake
Making the common rollover mistake can cost you thousands of dollars in additional taxes in your retirement years. Tim, a retiree from Company ABC, learned this the hard way when he failed to request NUA treatment of his company stock within his 401(k) account.
If you have company stock in your 401(k), you may be able to avoid paying thousands of dollars in taxes by making a NUA election. However, the NUA election window can be easily missed, leading to costly consequences.
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The scenario with Tim is a perfect example of how this mistake can happen. He rolled over his entire 401(k) balance to a traditional IRA, thinking he had done everything right. But in reality, he missed a huge tax-saving opportunity by not requesting NUA treatment of his company stock.
The NUA election allows you to separate the value of the company stock from the rest of your 401(k) balance, reducing the taxes you pay on the distribution. By not taking advantage of this, Tim will pay taxes on the entire $500,000 balance, including the company stock.
If you're not sure whether you've made this mistake, it's essential to review your 401(k) plan and consult with a financial advisor to determine the best course of action.
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Distribution Timing
Timing your 401(k) rollover and distribution strategically can save you money on taxes. This is especially true when it comes to the NUA distribution. If you work for a company until September and then retire, you've already got 9 months' worth of income in that tax year.
Processing the rollover from the 401(k) with the NUA to a brokerage account the following tax year can be beneficial. This is because your W-2 income will be completely off the table, which means the taxable cost basis associated with the NUA election is potentially taxed at a lower rate.
Tax Savings and Planning
You can reduce your tax bill by transferring employer stock from a 401(k) plan to a taxable brokerage account.
The NUA rules allow you to defer tax on the gain until you sell the stock, at which point it's taxed at long-term capital gains rates.
If you pull the company stock out of your former employer's 401(k) plan in a lump-sum distribution, tax is deferred on the NUA until you sell the stock.
You can elect to include NUA in your taxable income for the tax year you receive it, which might allow you to use an alternative method to figure the tax on your NUA.
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There are two main types of contributions in a 401(k) plan: nondeductible employee contributions and deductible voluntary employee contributions. NUA resulting from nondeductible employee contributions is tax-deferred, while NUA resulting from deductible voluntary employee contributions is taxed in the year of the distribution.
Here's a summary of the NUA tax rules:
- NUA is taxed at long-term capital gains rates when you sell the stock.
- Any gain exceeding the NUA is taxed as long-term or short-term capital gain, depending on how long you held the stock after pulling it out of the 401(k) account.
Transferring company stock to a taxable brokerage account can significantly reduce your tax bill, especially if there's been a significant gain in the stock.
Special Cases and Considerations
In special cases, NUA elections can have unusual tax implications. Normally, beneficiaries of an estate receive a step-up in cost basis, eliminating taxable gain if they sell the stock. However, if shares are deposited into a brokerage account as a result of an NUA election, the remaining portion of the NUA will be considered income with respect to the decedent.
Determining which portion of the remaining unrealized gain was from the NUA election can be tricky. Tax professionals may have to dig through records to figure it out. The exact same thing is transferred in an "in-kind" transfer, such as transferring employer stock from a retirement account to a taxable brokerage account.
Selling the stock and repurchasing it shortly thereafter blows the NUA planning opportunity. This means that the growth in the stock will be subject to ordinary income tax, rather than capital gains tax.
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Estate Planning Without Step-Up Cost Basis
Estate planning can be complex, especially when it comes to special cases like NUA elections. Normally, beneficiaries receive a step-up in cost basis, eliminating taxable gain, but this isn't the case for NUA elections from 401(k) accounts.
To qualify for NUA, there typically needs to be a large unrealized gain in the company stock within the 401(k) plan. This is because the NUA election only makes sense if the stock has performed well.
If the value of the company stock in a 401(k) account is $200,000 and the cost basis is $170,000, electing NUA will trigger a $170,000 immediate tax event. Only $30,000 would receive long-term capital gains treatment, making it probably not worth the tax hit.
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Employer Stock Disposition
The disposition of employer stock can be a complex and nuanced process.
When the employer stock is actually sold, two gains on the sale of that stock must be recognized. The first is the net unrealized appreciation in the employer stock, which is always a long-term capital gain.
This gain is crystalized at the time of the NUA distribution from the plan to the taxable account and is reported by the taxpayer on Form 8949 and Schedule D.
A second potential gain is the amount of the increase (or decrease) in value the stock has experienced since the NUA distribution into the taxable account, which could be a gain or a loss.
For example, if Mark sells 40 Acme shares for $1,040 each after an NUA distribution, he triggers two gains: $36,000 of Net Unrealized Appreciation, taxed as long-term capital gain, and $1,600 of short-term capital gain, taxed as ordinary income.
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When to Avoid
If you're considering an NUA election, there are some situations where it might not make sense. For example, if the company stock in your 401(k) account hasn't performed well, you might end up with a high cost basis, making the NUA election less beneficial.
If you're in a high tax bracket, the tax rate assessed on the cost basis amount during the year of NUA election might be a concern. In this case, the NUA election could lead to a higher tax bill than expected.
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If you're under 55 or 59½, you might be subject to an early withdrawal penalty if you take the NUA election. This could be a major drawback, especially if you're not yet ready to retire.
If you have a long time horizon to retirement, taking the NUA election might mean losing the tax-deferred accumulation of your 401(k) account. This could be a significant trade-off, especially if you're not yet ready to retire.
If your ordinary tax rate is lower or similar to the long-term capital gains rate, the NUA election might not provide the tax benefits you're hoping for.
Here are some specific situations where an NUA election might not make sense:
- Company stock has not performed well in 401(k) account – high cost basis
- High tax rate assessed on the cost basis amount during the year of NUA election
- Employee under age 55 or 59½, potentially triggering early withdrawal penalty
- Long time horizon to retirement (loss of tax deferred accumulation)
- Ordinary tax rate lower or similar to long-term capital gains rate
Introduction and Background
Retirement plans like 401(k)s often involve pre-tax contributions from both employees and employers.
Typically, these contributions are made with pre-tax dollars, which means they're not subject to taxes until withdrawal.
Most 401(k) participants are familiar with the concept of rollovers, where funds are transferred to an IRA or another qualified plan.
However, there's another strategy called Net Unrealized Appreciation or NUA that can result in significant tax savings.
NUA is particularly beneficial for those holding highly appreciated company stock within their 401(k) plan.
Withdrawing funds using the NUA strategy can allow for tax savings compared to the more common rollover method.
This strategy involves taxing the company stock at long-term capital gains rates, rather than ordinary income rates.
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Who Can Benefit?
If you have a highly appreciated stock position, you're in a good position to benefit from the NUA strategy. This means a significant portion of the stock value is eligible for the more favorable capital gains rates.
The NUA strategy is based on your unique tax and financial situation, so it's not about reaching a specific amount of appreciation. It's about taking advantage of the tax benefits available to you.
A highly appreciated stock position is key to the NUA strategy, and it's subjective, meaning there's no one-size-fits-all amount of appreciation that's considered ideal.
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