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Net Unrealized Appreciation

How the NUA strategy taxes company stock from a 401(k), when it beats an IRA rollover, the triggering events and lump-sum rule, and a calculator.

Updated November 4, 2026. Free, no sign-up; everything runs in your browser and nothing you type is stored.

Net unrealized appreciation calculator

Better choice
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–Net unrealized appreciation
–Tax using NUA
–Tax if rolled to an IRA and withdrawn

How net unrealized appreciation works

If your 401(k) holds your employer's stock, you can take the shares out in kind in a lump-sum distribution after a triggering event (separation from service, reaching 59½, disability or death). You pay ordinary income tax only on the shares' cost basis now; the growth while in the plan (the net unrealized appreciation) is taxed at long-term capital gains rates when you sell, however soon. Rolling the stock into an IRA instead means every dollar is taxed as ordinary income when withdrawn.

Example: stock with a $50,000 basis worth $300,000: NUA tax is $12,000 on the basis (24%) plus $37,500 on the $250,000 gain (15%) = $49,500, versus $72,000 if rolled over and withdrawn at 24%.

Watch-outs

Common questions

What is net unrealized appreciation?

The growth in employer stock while it was in your 401(k), which can be taxed at capital gains rates if you take the shares out in a lump-sum distribution.

When does NUA make sense?

When the stock's cost basis is low compared with its value.

Can I roll some of my 401(k) to an IRA and use NUA on the stock?

Yes, as long as the whole balance is distributed in the same tax year.

Sources

More retirement calculators: Medicare Plan G · Mega Backdoor Roth · Qualified Charitable Distributions · Roth Conversion

Related

General information, not financial, tax or legal advice. Check important numbers with the official source before acting on them.