Net Unrealized Appreciation: The 401(k) Tax Strategy Most Miss

Tax Strategy · NUA

2 MIN READ

Net Unrealized Appreciation:
the 401(k) strategy most miss.

If you have company stock in your 401(k) with significant appreciation, NUA can let you pay long-term capital gains rates instead of ordinary income on that appreciation, saving potentially hundreds of thousands in taxes. This is complex. Consult a CPA.

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NUA is one of the most consequential and error-prone tax decisions in retirement planning. A single mistake in executing the distribution can disqualify the entire strategy. Every significant NUA event deserves a CPA or tax attorney. Not financial or tax advice.

THE SHORT VERSION

If your 401(k) holds employer stock that has appreciated significantly, NUA lets you take a lump-sum distribution of that stock in-kind. The cost basis is taxed as ordinary income in the distribution year. All the appreciation, the NUA, is taxed as long-term capital gains when you eventually sell, even if you sell immediately after the distribution.

How NUA works

Requirements

Must have employer stock in your 401(k)
Must take a qualifying lump-sum distribution (separation from service, age 59.5, disability, or death) 🔍 verify×DON'T TRUST, VERIFYClaim: NUA requires a qualifying lump-sum distribution of the entire plan balance in a single tax year.Verify at: IRS Publication 575 ↗Detailed NUA rules in Publication 575.
The employer stock must be distributed in-kind (as shares), not sold and distributed in cash

Tax treatment

Cost basis of the stock (what the 401(k) paid for it): taxed as ordinary income in the distribution year.
Appreciation above cost basis (the NUA): taxed as long-term capital gains when you sell. Even if you sell immediately.

The math

EXAMPLE

401(k) holds 1,000 shares of employer stock
Cost basis in plan: $20/share = $20,000
Current price: $100/share = $100,000
NUA: $80,000

Standard rollover to IRA:

All $100,000 taxed as ordinary income when eventually withdrawn. At 32% bracket: $32,000 tax.

NUA strategy:

$20,000 ordinary income tax at 32%: $6,400. $80,000 long-term capital gains at 15%: $12,000. Total tax: $18,400. Savings vs standard rollover: $13,600 at this scale. At larger stock positions and higher tax brackets, the savings can run into six figures.

When NUA makes sense

YES, CONSIDER NUA

Significant appreciation (large NUA relative to basis)
Marginal income rate significantly exceeds your LTCG rate
Willing to sell the stock within a reasonable horizon (staying fully concentrated defeats the purpose)

NO, NOT WORTH IT

Small amount of employer stock
Low cost basis AND low retirement income (ordinary and LTCG rates converge)
You do not plan to sell the stock

The executional details matter: full plan balance distributed in same year, employer stock in-kind, non-stock assets rolled to IRA, all within the same tax year. Miss any detail and the NUA treatment is lost. This is CPA territory.

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Last updated 2026-04-22. Not financial or tax advice. Consult a CPA for NUA execution.

Net Unrealized Appreciation:the 401(k) strategy most miss.