How to Calculate Net Unrealized Appreciation: The NUA Tax Strategy That Saves Six Figures

What Net Unrealized Appreciation Actually Means

NUA is the difference between what your employer's plan paid for company stock and what that stock is worth on the day you take a lump-sum distribution. The IRS treats that spread as long-term capital gain, not ordinary income, when you eventually sell. That single distinction is the entire strategy.

Section 402(e)(4) of the Internal Revenue Code governs NUA treatment. It applies exclusively to employer securities distributed in-kind from a qualified plan. You do not get NUA treatment on mutual funds, index funds, or any other plan assets. Only employer stock.

The tax rate difference is significant. In 2025, long-term capital gains rates run 0%, 15%, or 20% depending on taxable income. Ordinary income rates run up to 37%. A high earner with substantial appreciated employer stock pays nearly twice the federal rate on that gain if they roll it into an IRA instead of taking advantage of NUA.

The NUA Calculation: Step by Step

The arithmetic is straightforward. The planning around it is not.

Step 1: Identify the plan's cost basis in the employer shares.

This is what the plan paid for your employer stock, including contributions and reinvested dividends within the plan. Your plan administrator must provide this number. Request it in writing before you initiate any distribution.

Step 2: Determine the fair market value on the distribution date.

Use the closing share price on the date the shares are distributed from the plan to a taxable brokerage account. This is your FMV figure.

Step 3: Subtract cost basis from FMV.

NUA = FMV on distribution date minus plan's cost basis in employer shares.

Step 4: Apply the correct tax rates.

On the distribution date, you owe ordinary income tax on the plan's cost basis. You owe nothing on the NUA until you sell. When you sell, the NUA is taxed at long-term capital gains rates, regardless of how long you held the shares in the taxable account. Any appreciation above the FMV on the distribution date is taxed at short-term or long-term capital gains rates depending on your holding period after distribution.

Worked Example 1: The High-Earner Scenario

Consider a 62-year-old executive. She has 5,000 shares of employer stock inside her 401(k). The plan's cost basis is $40 per share. The stock trades at $180 per share on her distribution date. Her other taxable income puts her in the 32% federal bracket. She holds the shares for 14 months after distribution, then sells.

The NUA calculation:

• Plan cost basis: 5,000 shares x $40 = $200,000
• FMV at distribution: 5,000 shares x $180 = $900,000
• NUA: $900,000 minus $200,000 = $700,000
• Post-distribution appreciation (sold at $195): 5,000 x $15 = $75,000

Tax treatment:

• $200,000 taxed as ordinary income in the year of distribution: $200,000 x 32% = $64,000
• $700,000 NUA taxed at 15% long-term capital gains rate when sold: $105,000
• $75,000 post-distribution gain held 14 months, taxed at 15%: $11,250
• Total federal tax: $180,250

IRA rollover comparison:

If she rolled the entire $900,000 into an IRA and withdrew it over time in the 32% bracket, the federal tax on $900,000 would reach $288,000. The NUA strategy saves her $107,750 in federal tax on this position alone. State taxes compound that difference further.

Worked Example 2: The Moderate-Income Retiree

Not every NUA candidate is a high earner. Consider a 60-year-old retiring with employer stock in his 401(k). His plan cost basis is $25 per share across 3,000 shares. FMV at distribution is $110 per share. His other income in retirement will total $60,000, placing him in the 22% bracket for ordinary income and the 15% bracket for capital gains.

The NUA calculation:

• Plan cost basis: 3,000 x $25 = $75,000
• FMV at distribution: 3,000 x $110 = $330,000
• NUA: $330,000 minus $75,000 = $255,000

Tax treatment:

• $75,000 taxed as ordinary income: $75,000 x 22% = $16,500
• $255,000 NUA at 15%: $38,250
• Total federal tax: $54,750

IRA rollover comparison:

The same $330,000 fully rolled into an IRA and withdrawn at 22% generates $72,600 in federal tax. The NUA strategy saves this retiree $17,850. That figure rises if he manages post-distribution holding periods to stay in the 15% capital gains bracket.

Qualifying for NUA Treatment: The Rules That Disqualify Most People

The IRS imposes strict conditions. Miss any one of them and you lose NUA treatment entirely.

Lump-sum distribution requirement. You must distribute the entire balance of all accounts of the same type in a single tax year. You cannot cherry-pick just the employer stock. All money in your 401(k) must come out. You can roll non-stock assets into an IRA and take only the employer stock in-kind, but the full account must be distributed in one calendar year.

Triggering event requirement. A qualifying triggering event must precede the distribution. The four accepted events are: separation from service, reaching age 59½, death, or disability (disability applies only to self-employed individuals under the plan rules). Separation from service does not include retirement from a second job where you still hold the employer stock plan.

In-kind distribution requirement. The shares must transfer directly to a taxable brokerage account as shares. Selling inside the plan first converts the proceeds to cash and eliminates NUA treatment.

When NUA Does Not Make Sense

NUA is not always superior. Three situations argue against it.

First, a low cost basis ratio cuts both ways. If the plan paid $5 per share on stock now worth $6, the NUA is $1 per share. The ordinary income tax on a $5 basis may not justify the complexity and loss of tax-deferred growth.

Second, immediate liquidity needs change the calculus. Paying ordinary income tax on the cost basis in the distribution year reduces cash available to invest. If your ordinary income tax bill on the basis exceeds what you can absorb, NUA creates a near-term cash flow problem.

Third, very low retirement income can make a full IRA rollover superior. If your projected ordinary income in retirement falls below the 12% bracket threshold ($47,150 for single filers in 2025), the tax rate difference between ordinary income and capital gains narrows substantially. Run the numbers before assuming NUA wins.

How to Execute the NUA Strategy Without Triggering the Wrong Treatment

Contact your plan administrator before initiating any distribution. Request the official cost basis documentation for employer shares. Confirm the plan supports in-kind distribution of employer stock. Direct non-stock assets to an IRA rollover. Direct the employer stock in-kind to a taxable brokerage account in the same calendar year.

Document everything. The Form 1099-R your plan issues will show the distribution. Box 6 on Form 1099-R reports the NUA amount. That figure must match your own calculation. Discrepancies should be resolved with the plan administrator before you file. Your tax preparer will report the NUA on Schedule D when you eventually sell.

Do not sell the shares before they clear the taxable account. Selling within the plan eliminates NUA treatment and converts the full amount to ordinary income.

Run Your Numbers Before the Distribution

The NUA strategy requires a precise comparison of two tax paths before you act. The variables include your cost basis ratio, your ordinary income tax bracket, your capital gains bracket, your projected retirement income, and your state tax treatment of capital gains.

The CalcMoney income tax calculator lets you model both scenarios with your actual figures. Input your distribution amount, cost basis, anticipated sale timeline, and income levels. The output shows your after-tax position under both the NUA approach and a full IRA rollover.

Calculate your NUA tax savings with the CalcMoney income tax tool →

The decision point is the triggering event. Once you take a full lump-sum distribution, the path is set. Modeling the outcome before you act is not optional. For positions where employer stock represents 20% or more of plan assets, the tax difference between the two paths frequently exceeds five figures. In concentrated positions, it exceeds six.

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title: "How to Calculate Net Unrealized Appreciation: The NUA Tax Strategy That Saves Six Figures" date: "2026-06-18T11:39:16.178Z" excerpt: "Most 401(k) holders roll their employer stock into an IRA and pay ordinary income tax on every dollar. The NUA strategy taxes the growth at long-term capital gains rates instead. For concentrated employer stock positions, the difference can exceed $100,000 in lifetime tax savings." coverImage: "/images/blog/calcmoney_blog_how_to_calculate_net_unrealized_appreciation.png"

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