Net Unrealized Appreciation (NUA): When Company Stock Changes the Rollover Math

Net unrealized appreciation (NUA) is an IRS rule that lets you move employer stock from a 401(k) in-kind to a taxable brokerage account, pay ordinary income tax only on the plan's cost basis, and have the appreciation taxed at long-term capital gains rates when you sell, no matter how long you hold the shares afterward. The rest of the account can roll into an individual retirement account (IRA) tax-free in the same transaction.

How the NUA Mechanic Works

NUA rides on a lump-sum distribution: you send the employer shares to a taxable account and owe ordinary income tax on the plan's cost basis, which is what the plan paid for the shares. Everything above basis is the NUA: untaxed at distribution, then taxed as long-term capital gains when you sell, currently capped at 20% for most high earners. Under the final regulations for the 3.8% net investment income tax (NIIT), the NUA itself is excluded from that tax. Growth after distribution is taxed based on your holding period from that date, and it can be subject to the NIIT.

The Rules That Break the Strategy

Three conditions apply.

A triggering event. Age 59½, separation from service, disability, or death.

A lump-sum distribution. The entire vested balance must leave the plan within a single tax year. A partial distribution or rollover from the same plan in an earlier year, after the same triggering event, breaks lump-sum treatment for that event, though a later triggering event (reaching 59½, for example) can open a new window. A rollover from a different former employer's plan does not affect it.

Employer stock only. The shares must be stock of the plan sponsor, distributed in-kind; options and other equity compensation generally do not qualify.

Two watchouts. Get the plan's cost basis in writing first; box 6 of the 1099-R should show the NUA amount, and administrators sometimes get it wrong. And the basis is ordinary income in the distribution year, which can push you into a higher bracket, so model that year's tax hit too.

Worked Example: $300,000 Position, $50,000 Basis

The numbers are illustrative. You are 62, with $300,000 of company stock at a $50,000 plan cost basis, plus $250,000 in mutual funds.

Under NUA, the stock goes in-kind to a taxable account and the $250,000 rolls to an IRA. You owe ordinary income tax on the $50,000 basis now; at a 22% rate, $11,000. Sell later at $300,000 and you owe long-term capital gains tax on the $250,000 of NUA; at 15%, $37,500. Total: $48,500, versus $66,000 withdrawing $300,000 from an IRA as ordinary income at 22%. Roughly $17,500 saved, more in higher brackets.

How This Connects to the 401(k) Rollover Guide

NUA is a less-discussed rollover option, and for the right person the most impactful one. The four options for an old 401(k) and the common rollover mistakes are covered in the parent guide: 401(k) Rollover: A Complete Guide to Moving an Old Retirement Account.

Frequently Asked Questions

What happens to dividends paid after the distribution?

They are taxed as ordinary or qualified dividends in the year received, like any other taxable account. NUA only covers appreciation that existed in the plan at distribution.

What if the stock drops in value after the distribution?

The ordinary income tax on the basis is locked in, so a severe drop can leave you worse off than a straight rollover. That risk is a reason to discuss diversifying promptly.

Does the 10% early withdrawal penalty apply?

It can apply to the cost basis portion if you are under 59½ and no exception under Internal Revenue Code Section 72(t) fits. Separating from service in or after the year you turn 55, disability, and death are among the exceptions. The NUA itself isn't taxed at distribution, so the penalty doesn't reach it.

Do I need to report the NUA in the year of distribution?

You report the cost basis as ordinary income via the 1099-R; the box 6 NUA amount is not taxed until you sell. Keep the 1099-R permanently; you will need it when you sell.

What to Do Next

What decides this for you. The gap between what your employer stock cost inside the plan and what it is worth today. When that spread is wide, the appreciation can be taxed at long-term capital gains rates instead of ordinary income, and the difference grows with the size of the position.

Where it goes wrong. This is a one-time election tied to a single lump-sum distribution, and the most common way to lose it is to never learn it existed. Roll the stock into an IRA along with everything else, which is what almost every rollover form defaults to, and the treatment is gone permanently. A prior partial rollover from the same plan can disqualify it before you start. Even when it is available, it may not fit, because you owe ordinary income tax on the cost basis in the year you distribute, which has to be weighed against the years of deferral you give up.

Worth a conversation if you hold any employer stock in a workplace plan. That is the whole test. The decision has to be made before anything moves. Book a call and bring your plan statement showing the cost basis.

The information provided is for educational purposes only and does not constitute investment, legal, or tax advice. Tax law changes frequently, so verify current rules before acting. Consult with qualified professionals for guidance specific to your situation.