What Is Net Unrealized Appreciation (NUA) and How Can It Save You Money?

Most retirement account distributions are taxed as ordinary income. But if you own employer stock inside your 401(k), there's a special IRS rule called Net Unrealized Appreciation (NUA) that can dramatically reduce your tax bill. Here's who it applies to and how to use it.

What Is NUA?

Net Unrealized Appreciation is the difference between what your employer stock cost (its cost basis) when it was placed in your 401(k), and its current fair market value. For example, if your employer contributed stock worth $10 per share, and it's now worth $80 per share, the NUA is $70 per share.

Why NUA Matters: The Tax Advantage

Normally, 401(k) distributions are taxed as ordinary income (up to 37%). But with NUA treatment, you only pay ordinary income tax on the cost basis — and the appreciation (NUA) is taxed at long-term capital gains rates (0%, 15%, or 20%) when you eventually sell the stock. This can be a massive tax saving if the stock has appreciated significantly.

How NUA Works: Step by Step

1. 1You must take a lump-sum distribution from your 401(k) in a single tax year after a triggering event (separation from service, reaching age 59½, disability, or death).
2. 2The employer stock is distributed in-kind to a taxable brokerage account — not rolled over to an IRA.
3. 3You pay ordinary income tax on the cost basis of the stock in the year of distribution.
4. 4You hold the stock in your brokerage account. When you sell it, the NUA (the appreciation) is taxed at long-term capital gains rates regardless of how long you've held it post-distribution.
5. 5Any additional gains after the distribution date are taxed based on your holding period post-distribution.

NUA vs. IRA Rollover: Which Is Better?

If you roll employer stock into an IRA, all future distributions are taxed as ordinary income — including the appreciation. NUA treatment lets you convert that appreciation from ordinary income (up to 37%) to long-term capital gains (usually 15–20%). The larger the appreciation, the bigger the potential savings.

When NUA Doesn't Make Sense

• The stock hasn't appreciated much — the tax savings may not outweigh the complexity.
• You're in a low income tax bracket — the gap between ordinary income and capital gains rates is smaller.
• You need the money immediately — triggering a large ordinary income tax bill plus potential 10% penalty (if under 59½) may not be worth it.
• Concentration risk — holding a large position in a single employer's stock is risky regardless of taxes.

The 10% Early Withdrawal Penalty

If you're under 59½, the cost basis portion of the NUA distribution is subject to the 10% early withdrawal penalty. The NUA itself is not subject to the penalty. This is another reason NUA strategies are more commonly used by employees who've left the company at or near retirement age.