Net Unrealized Appreciation, Defined
Net Unrealized Appreciation is the gap between what your 401(k) plan originally paid for shares of your employer’s stock (the cost basis) and what those shares are worth when distributed. If the plan holds actual employer shares, and if those shares are moved in kind into a taxable brokerage account rather than sold and rolled into an IRA, the cost basis is taxed as ordinary income now, while the appreciation may be taxed later at long-term capital gains rates when you eventually sell.
Limitation: This treatment is governed by IRC Section 402(e)(4) and requires the shares to be actual employer securities, not a unitized stock fund. Your plan administrator must confirm what your account actually holds.


