Chapter 6: NSOs: the straightforward option
Sam's equity portal shows a line his younger colleagues envy: 20,000 vested stock options with an $8 strike, granted years ago when his company was small. The company went public earlier this year, the lockup has expired, and the stock trades at $30. The portal values the position at $440,000, and for once the portal is nearly honest. That figure is the spread: the gap between the $30 price and the $8 strike, times 20,000 shares. These are non-qualified stock options (NSOs), the plainer of the two option breeds, and this chapter traces every dollar of that $440,000 through the three standard ways to collect it.
Where NSOs come from
A quick recap from chapter 1: an option is the right, never the obligation, to buy shares at a fixed strike price until the option expires, typically 10 years after grant. The non-qualified kind shows up in three places. Companies grant NSOs to people who cannot legally receive ISOs, such as contractors, advisors, and board members. They appear automatically when an ISO grant runs past the $100,000 limit, a conversion chapter 7 explains. And plenty of companies, public and private, simply prefer them because the tax mechanics are tidy. If your paperwork does not say "incentive stock option," you are holding NSOs.
The tax in one sentence
When you exercise an NSO, the spread between the market value and your strike is added to your W-2 as ordinary wages that day, and everything the stock does afterward is capital gain or loss measured from a basis equal to the exercise-day value. That sentence is the entire tax model, which is why this chapter is the calm one in Part II.
Two familiar consequences follow. First, because the spread is supplemental wages, your employer withholds the flat 22% federal rate on it, 37% above $1,000,000, and the gap between 22% and your marginal rate behaves exactly like the RSU gap in chapter 4. Medicare comes out too, along with Social Security up to its annual cap and state tax; this chapter keeps the spotlight on federal income tax so the numbers stay readable. Second, nothing is taxed at grant and nothing while you wait. Tax happens at exercise and again at sale, and you choose both dates.
Sam's $440,000, three ways
Sam exercises all 20,000 options with the stock at $30. However he pays for it, the same wage event happens: $440,000 lands on his W-2, his employer withholds 22% of it ($96,800) for federal income tax, and the rest of the bill arrives with his return. His salary plus the spread put his marginal federal rate near 35%, and to keep the arithmetic checkable this chapter applies that single rate to the whole spread: $154,000 of total federal income tax, so $57,200 remains due after withholding. What differs across the three methods is where the cash comes from and what Sam holds at the end.
Exercise and hold. Sam wires his own money: $160,000 for the strike (20,000 times $8) plus the $96,800 withholding, $256,800 out of savings, with $57,200 still due in April. He keeps all 20,000 shares, worth $600,000, with a $30 basis.
Sell-to-cover. The broker exercises and immediately sells just enough shares to cover the strike and the withholding. That bill is $256,800, which at $30 a share means selling 8,560 shares. Sam pays nothing from savings and keeps 11,440 shares worth $343,200, with the same $57,200 due in April, about 1,907 more shares if he settles it from stock.
Full cashless. The broker sells all 20,000 shares at $30 for $600,000, repays the $160,000 strike, sends $96,800 to withholding, and deposits $343,200 in cash. After the remaining $57,200 is paid, Sam nets $286,000 and holds no stock.
| On exercise day | Exercise and hold | Sell-to-cover | Full cashless |
|---|---|---|---|
| Shares sold at $30 | 0 | 8,560 | 20,000 |
| Shares kept | 20,000 | 11,440 | 0 |
| Total shares | 20,000 | 20,000 | 20,000 |
| Value sold | $0 | $256,800 | $600,000 |
| Value kept as shares | $600,000 | $343,200 | $0 |
| Cash paid from savings | $256,800 | $0 | $0 |
| Cash deposited to Sam | $0 | $0 | $343,200 |
The tax line is identical under all three, because the wage event does not care how you funded it.
| Federal income tax on the spread, every method | Amount |
|---|---|
| Spread added to W-2 wages | $440,000 |
| Withheld at exercise at 22% | $96,800 |
| Remaining due at the assumed 35% marginal rate | $57,200 |
| Total federal income tax | $154,000 |
Now check the bottom line once every tax dollar is settled. Exercise and hold leaves Sam $286,000 richer, held as stock he partly bought with $314,000 of his savings. Sell-to-cover leaves him $286,000 richer, held as roughly $286,000 of shares once April is paid from stock. Full cashless leaves him $286,000 richer, in cash. The enrichment is identical, so the only real question is the one the cash test asks: how much company stock does Sam want to own at $30 a share, bought with money that is now his?
Sam reads his own table and picks full cashless. His reasoning fits in two sentences. The $440,000 spread was pay for work he already did, and exercise-and-hold would amount to spending $314,000 of savings on more of the stock that already dominates his net worth (chapter 10 counts that exposure honestly, and the count is not flattering). The cash lands, $57,200 of it goes straight into his tax set-aside for April, and the rest follows his written plan into the diversified portfolio.
Deep in the money is stock in a costume
The decision logic for NSOs has two halves, sorted by how far the option is in the money.
When an NSO is deep in the money, with the price far above the strike, the option behaves almost exactly like the stock itself. Sam's $8 options gain or lose close to a dollar of value for every dollar the $30 stock moves, and the spread will be taxed as wages whenever he exercises. Holding deep-in-the-money options is concentrated stock wearing a costume, so the chapter 4 logic applies in full: exercise and sell unless a written exception, made before the decision, says otherwise.
When an option is barely in the money, the opposite logic wins. Suppose the stock sat at $9 against the $8 strike. Exercising would buy the entire downside of the stock to capture a $1 spread. If the shares slide to $6, the option holder has lost no cash of his own, while the exercise-and-hold owner is down $3 a share of real money. That floor under your losses is the option's time value, and exercising early throws it away. There is no tax consolation for doing so either: the spread is wages whenever you exercise, so waiting leaves the wage treatment unchanged and keeps the floor under you. Early exercise mainly relabels future growth as capital gain, and paying real cash plus real risk for a relabel is a poor trade on a marginal option.
Exercise an NSO when you would gladly own the stock at today's price with your own cash, or when you plan to sell the same day. Deep in the money, default to exercise-and-sell. Barely in the money, default to waiting: the floor the option gives you is worth more than an early start on the capital-gains clock.
The 10-year clock
NSOs expire, usually 10 years from grant, and an expired in-the-money option is pay you earned and then declined to collect. The endgame deserves a calendar entry, because the waiting argument dies before the option does. A deep-in-the-money option in year nine has almost no time value left, so there is little reason to keep holding the right instead of the result. Exercise, collect the spread, and put the shares through the cash test. Some plans exercise in-the-money options automatically at expiration, many do not, and people have forfeited entire spreads to a missed date. Leaving the company starts a faster clock: most plans give you 90 days to exercise vested options or lose them, a deadline chapter 9 treats in full and chapter 11 revisits for layoffs.
Four dates that decide everything
- Expiration date. Usually 10 years from grant. Set a reminder a full year early.
- Vesting dates. Only vested options can be exercised, and only vested options survive your departure.
- Post-termination window. Usually 90 days. Know the number before any resignation conversation.
- Trading windows. If you are subject to blackout periods, your exercise-and-sell dates are not entirely yours to choose.
Where people go wrong
- Trusting the 22% withholding. Sam's gap was $57,200 on one exercise. The chapter 4 fix, a set-aside or estimated payment made the same week, applies here unchanged.
- Exercising early to chase capital gains. The spread is wages no matter when you exercise. Early exercise spends real cash and takes real stock risk to relabel gains that may never arrive.
- Letting options expire. A vested in-the-money option near expiration is money with a deadline. Calendar it the week the grant arrives.
- Treating sell-to-cover as the whole tax bill. It covers the withholding, and the marginal-rate balance still lands in April.
- Holding exercised shares by default. After exercise you own plain stock bought at $30. If you would not buy it with cash today, the costume rule says sell.
Key takeaways
- The NSO tax model is one sentence: the spread is W-2 wages at exercise, and growth afterward is capital gain from an exercise-day basis.
- Sam's 20,000 options at an $8 strike and $30 price carry a $440,000 spread: $96,800 withheld at 22%, $154,000 of federal tax at his assumed 35% rate, $57,200 due in April.
- Fully settled, all three exercise methods leave him $286,000 richer. The choice is only how much company stock to hold afterward, which is the cash test again.
- Deep-in-the-money options are concentrated stock in a costume: exercise and sell by default. Barely-in-the-money options are worth more alive: wait, and keep the floor.
- Options expire at 10 years and usually 90 days after you leave. Both dates belong in your calendar, not just the plan documents.
Sources: IRS: Topic 427, Stock Options · IRS: Publication 525, Taxable and Nontaxable Income · Finvest Tax Playbook