Broader eligibility, simpler taxes, but ordinary income at exercise.
Like ISOs, an NSO grants the right to purchase shares at a fixed strike price. The mechanics of vesting, exercising, and holding are identical. The difference is purely in tax treatment. NSOs are 'non-qualified' because they don't meet the IRS requirements for preferential ISO tax treatment, which also means they're simpler and more flexible for the company to grant to a wider set of people.
At the moment of exercise, the spread, the difference between the current FMV and the strike price, is immediately recognized by the IRS as ordinary income, treated exactly like a cash bonus. It is subject to federal income tax rates (up to 37%), state income taxes, and payroll taxes including Social Security and Medicare. Because the transaction involves receiving shares rather than liquid cash, the employee is legally obligated to deliver cash out-of-pocket to satisfy the mandatory withholding obligations, compounding the financial burden of exercise. For contractors and advisors, no withholding occurs and taxes are the individual's responsibility.
Once exercised, the FMV on the date of exercise establishes your cost basis in the shares. Any future appreciation realized upon eventual sale is taxed as capital gains. The specific rate depends entirely on how long you hold after exercise: shares sold within one year of exercise are taxed at short-term capital gains rates (which mirror ordinary income rates), while shares held more than one year qualify for lower long-term capital gains rates. This means the total tax cost for NSOs is split into two events, ordinary income at exercise on the spread, then capital gains at sale on subsequent appreciation.
Not exactly. At exercise, the spread is taxed as ordinary income. At sale, only the appreciation after your exercise date is taxed as capital gains. You're paying tax on two different portions of the gain at two different rates, but no dollar of gain is taxed twice. The FMV at exercise is your cost basis, so it's excluded from the capital gains calculation.
Yes. Unlike ISOs, NSOs can be granted to anyone who provides services to the company, including consultants, advisors, and board members, not just full-time employees.
Your total cash outlay is the strike price plus the mandatory income tax withholding on the spread. For example, if you have 10,000 options with a $5 strike and current FMV of $15, your spread is $100,000. You'd pay $50,000 for the shares plus income tax withholding on $100,000, potentially another $35,000–$50,000 depending on your tax bracket and state. Total capital required could be $85,000–$100,000 for shares currently worth $150,000.
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