The NUA Strategy Retiring Executives Use to Cut Taxes on $500,000 of Company Stock in Their 401(k)

A 62-year-old executive retires from Apple (NASDAQ:AAPL | AAPL Price Prediction) with $500,000 of company stock sitting inside her 401(k), and an original cost basis of $80,000. Her advisor wants to roll the entire balance to an IRA. That single move would cost her tens of thousands of dollars she will never get back, because it forfeits the only piece of the tax code written specifically for people in her situation: Net Unrealized Appreciation, codified at IRC §402(e)(4).

This plays out constantly. AAPL employees who have contributed to the company stock fund inside their 401(k) for a decade or more are sitting on enormous embedded gains. Shares are around $287 today, up 126% over five years and roughly 1,260% over the past decade. A long-tenured executive with a low cost basis is the textbook NUA candidate.

How NUA Rewrites the Tax Bill

Inside a 401(k), every dollar eventually comes out as ordinary income. Roll the AAPL stock to an IRA and you lock that treatment in forever. NUA breaks the rule. If you take a lump-sum distribution of your entire 401(k) balance in a single tax year following a triggering event (separation from service, age 59½, death, or disability) and move the company shares in-kind to a taxable brokerage account, you pay ordinary income tax now only on the cost basis. The appreciation, the NUA itself, is taxed at long-term capital gains rates whenever you sell, regardless of how long you hold the shares afterward.

Run the math on the executive’s position. Ordinary income tax on the $80,000 basis at the 24% federal bracket is $19,200. The $420,000 of NUA sits tax-deferred until she sells. When she does, most of it falls in the long-term capital gains bracket, which for 2026 covers single filers with taxable income from about $49,450 up to roughly $501,050. 15% of $420,000 is $63,000. Total tax under NUA: roughly $82,200.

Compare that to the IRA rollover. The full $500,000 eventually comes out as ordinary income. At 24% that is $120,000. At 32%, the bracket many retirees drift into once Social Security and RMDs stack on top, it is $160,000. The savings range from $38,000 to $78,000, and they widen if she lives in a high-tax state where capital gains often get a friendlier treatment than ordinary income.

The IRMAA Trap Hiding in the Lump Sum

The catch most articles skip: the year you execute NUA, your taxable income spikes by the cost basis amount. That is fine here because $80,000 is modest. But spreading the sale of the appreciated shares matters. Medicare uses a two-year lookback on modified adjusted gross income. For 2026, IRMAA surcharges begin at $109,000 MAGI for single filers and $218,000 for joint filers, and the top tier kicks in above $500,000 single, $750,000 joint. Selling the entire $500,000 AAPL block in one year vaults a single retiree into the highest IRMAA bracket and tacks roughly $400 per month onto her Part B and Part D premiums two years later. Selling in tranches across multiple tax years keeps her under the thresholds and preserves the LTCG savings.

Three Moves Before You Sign the Rollover Paperwork

1. Get the cost basis in writing from the plan administrator before any distribution paperwork is filed. The plan tracks basis lot by lot. You need that number to model whether NUA beats a rollover. As a rule of thumb, NUA wins when the basis is under 30% of market value, which is exactly the executive’s situation at $80,000 of basis on $500,000 of stock.
2. Confirm the distribution qualifies as a lump sum in a single tax year. Any partial distribution in a prior year, including an in-service withdrawal, can disqualify NUA on the entire account. The triggering event must be clean: separation, 59½, death, or disability.
3. Build a multi-year sale schedule for the appreciated shares. Stay under the IRMAA cliff at $109,000 single MAGI, and ideally under the top of the 15% LTCG bracket, before deciding how much AAPL to sell each year. Post-distribution price appreciation starts a fresh holding period and is taxed as ordinary capital gains, so the urgency to diversify is real, but it does not have to happen in one tax year.

If the combined federal, state, and IRMAA tax savings exceed $38,000, a fee-only advisor and a CPA who has actually filed Form 1099-R with the NUA box checked will pay for themselves several times over.