RSUs vs. Stock Options: Which Is Better for You?

Two Roads to Equity Ownership

If you work in tech, your compensation almost certainly includes equity — but the type of equity matters enormously. The two most common forms are stock options (ISOs and NSOs) and restricted stock units (RSUs). They both give you a financial stake in your company, but they work very differently in terms of risk, taxes, and value realization.

Understanding these differences is not academic — it directly affects how much money you take home after taxes, how much risk you bear, and what decisions you need to make along the way.

How Stock Options Work (Quick Recap)

Stock options give you the right to buy shares at a fixed exercise price. You pay nothing upfront — the option itself is free. But to own shares, you must exercise by paying the exercise price in cash. The value of your options is the difference between the current fair market value and your exercise price (the spread).

Key characteristics:

• You choose when (or if) to exercise
• Exercising costs real money
• ISOs can receive favorable tax treatment
• Options can expire worthless if the company's value declines below the exercise price

How RSUs Work

RSUs are a promise to deliver shares (or their cash equivalent) at a future date, typically when they vest. Unlike options, there is no exercise price — you receive shares for free. When RSUs vest, the company delivers shares to you and you owe taxes on the full fair market value as ordinary income.

Key characteristics:

• No exercise decision or cash required
• Value is guaranteed as long as the stock has value (no "underwater" scenario)
• Taxed as ordinary income at vesting — no favorable capital gains treatment at that point
• Common at later-stage and public companies

Side-by-Side Comparison

Tax Treatment: The Critical Difference

Stock Options (ISOs)

If you exercise ISOs and hold the shares for at least one year after exercise and two years after the grant date, the entire gain is taxed at long-term capital gains rates (up to 23.8% including NIIT). However, the spread at exercise is an AMT adjustment, which can trigger a significant AMT bill.

If you sell before meeting these holding requirements (disqualifying disposition), the spread is taxed as ordinary income.

Stock Options (NSOs)

The spread at exercise is always taxed as ordinary income — federal, state, and payroll taxes apply. Any appreciation after exercise can qualify for long-term capital gains if you hold for more than one year.

RSUs

At vesting, the full fair market value is taxed as ordinary income. There is no way to avoid this. After vesting, if you hold the shares and sell later at a higher price, the additional gain is a capital gain (long-term if held more than one year after vesting).

The Tax Math

For a California employee in the top bracket:

The ISO qualifying disposition saves roughly $14,000 on a $100K gain — but requires managing AMT risk and holding period requirements.

When Stock Options Are Better

Stock options generally favor employees when:

• The company is early-stage and the exercise price is low (pennies or a few dollars per share)
• You can exercise early when the spread is small, minimizing the tax hit and starting your holding period
• You believe the company will grow significantly, making the option's leverage valuable
• You have the cash (or access to financing) to exercise and hold
• ISOs are available, allowing the possibility of long-term capital gains treatment

The leverage effect of options is powerful at early-stage companies. If you exercise 50,000 ISOs at $0.10 ($5,000 total cost) and the company eventually goes public at $50 per share, your gain is $2.5 million — potentially taxed at long-term capital gains rates.

When RSUs Are Better

RSUs generally favor employees when:

• The company is later-stage or public and the stock has a known, stable value
• You do not want exercise risk — the risk of paying cash for shares that might decline
• Cash flow is a priority — RSUs require no out-of-pocket investment
• Tax simplicity matters — RSUs have straightforward tax treatment with no AMT complexity
• The company's growth rate has slowed, making the option leverage less valuable

At a public company with a $200 stock price, receiving 500 RSUs (worth $100,000) is more predictable and valuable than receiving 500 options that require $100,000 to exercise — especially if the stock only grows 10–20% per year.

The Hybrid Approach

Some companies offer both stock options and RSUs. This is increasingly common at late-stage private companies and companies transitioning from private to public. The options provide upside leverage, while the RSUs provide a guaranteed floor value. If you receive both, manage them as a portfolio — the options are your growth bet, the RSUs are your stable value.

What to Consider When Comparing Offers

If you are evaluating job offers that include different types of equity, consider:

1. Company stage: Early-stage → options are likely more valuable. Late-stage → RSUs are likely more valuable.
2. Your risk tolerance: Can you afford to invest cash in exercising? Are you comfortable with illiquid shares?
3. Tax situation: Are you in a high tax bracket? Do you have AMT exposure from other sources?
4. Cash needs: Do you need the cash you would spend exercising for other purposes?
5. Belief in the company: How confident are you in the company's growth trajectory?

Neither stock options nor RSUs are universally "better." The right choice depends on the company's stage, your financial situation, and your risk tolerance. Understanding both instruments helps you make the comparison with confidence.