Non-qualified stock options don't trigger AMT like ISOs do. But if the spread between your exercise price and the stock's current value gets large — which happens at companies riding a growth cycle like today's AI startups — the tax hit can be just as painful. The entire spread is taxed as ordinary income the moment you exercise. In California or New York, that's a combined federal and state rate north of 50% for high earners.
The longer NSOs sit unexercised while the stock climbs, the bigger that bill gets. Consider someone holding 50,000 NSOs with a $5 strike price at a company now valued at $200 per share. The total spread is $9.75 million — taxed as ordinary income, that's nearly $5 million in tax withholdings. Add $250,000 to cover the exercise price, and the out-of-pocket cost tops $5 million on a position worth $10 million.
If your plan allows early exercise, you can avoid most of that. Exercise at or near the grant date when the spread is small — or zero — and you pay the exercise price out of pocket for illiquid shares that may or may not work out, but any future appreciation is taxed as capital gains, not ordinary income.
If you're already past that window and the spread has grown, stacking exercises across multiple years can keep more of each tranche out of the top bracket. If the company is late-stage and private, you may be able to sell enough shares on a secondary market to cover the exercise cost and taxes — keeping the rest. And if those don't work, sometimes the best move is to wait until the company goes public and a full cashless exercise becomes available. No matter your approach, this needs a discussion and/or modeling well before you decide.
For educational purposes only. Not tax, legal, or investment advice.