Ask an Advisor: RSUs Vs. Stock Options
RSUs and stock options are common stock-based compensation offerings that differ significantly in how they work, tax treatment and level of risk.

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If you’ve found yourself in the position of getting both restricted stock units (RSUs) and stock options from an employer — or you’re comparing benefits in multiple job offers — it’s time to do your homework. Stock-based benefits like RSUs and options may be a major part of your total pay package. But how they work, their tax implications and their potential value can differ significantly.
“Both are great ways to get upside exposure to the company you’re working for,” says Daniel Messeca, a certified financial planner and co-founder of Craftwork Capital in Alexandria, Virginia. But “it’s apples and oranges.”
Understanding the key features of and differences between RSUs and stock options could help you determine which might be a better incentive for you.
Understanding RSUs and stock options
RSUs and stock options are types of equity compensation that employers may offer to attract and retain talented employees. The value of these incentives is tied to the company’s stock performance, which help to align workers’ interests with the company. If the company succeeds, workers holding company stock also benefit.
What are restricted stock units?
With restricted stock units, or RSUs, a company promises shares that the employee will receive after meeting certain conditions. Those conditions generally include a vesting period, but also could include other stipulations. Once the shares vest — typically in batches over several years — ownership of the shares transfers to the employee at no out-of-pocket cost. At that point, the employee can opt to sell or hold the shares.
What are stock options?
With stock options, a company promises to sell a certain number of shares to an employee at a set price, known as the strike price. Stock options also tend to have a vesting period. Once the shares vest, the employee has the right to purchase those shares at the strike price. This step is known as exercising your options, and it can occur any time until the options expire, up to 10 years after the options are granted.
There are two kinds of stock options.
RSUs vs. stock options
Consider the key differences between RSUs and stock options.
Restricted stock units (RSUs) | Stock options | |
---|---|---|
Are there upfront costs? | No. Employees receive shares once they vest. | Yes. Employees receive the right to purchase shares at a set price once they vest. |
What are the typical stages? |
|
|
What is the value based on? | The market price. Because you don’t pay to acquire the shares, they’ll always have some value, unless the share price of your company goes to $0. | The bargain element — that is, the difference between the strike price and the market value of the shares at the time they’re exercised. Because you pay to acquire the shares, they’ll only have value if the strike price is lower than the market price. |
How are they taxed? | The market value of the vested shares is taxed as ordinary income. You may also be taxed on any capital gains when you sell. | ISOs: Taxes are deferred until you sell your shares, though you may face an alternative minimum tax at the time you exercise. If you meet certain holding period requirements when you sell, any income is taxed at the typically lower capital gains tax rate. NSOs: The bargain element is taxed as ordinary income. You may owe capital gains tax when you sell. |
When are taxes owed? | When the shares vest. This means employees don’t have the ability to time the tax event. | When you exercise your options. This means employees have some ability to time the tax event. |
Do they expire? | No. Any vested RSUs remain yours, even after you leave the company. | Yes. Options typically must be exercised within 10 years from the date they’re granted. When you leave a company, you may have to exercise any vested options within 90 days. In both cases, the actual time period may differ between companies. |
What’s the risk level? | Lower risk because they require no upfront cost and will retain their value. | Higher risk because they require some upfront cost, could expire, and could lose all value if the market price is lower than the strike price. |
RSUs vs. stock options: Which is better?
Stock options and RSUs each have their advantages and disadvantages. But there could be circumstances in which one is more helpful than the other, says Messeca of Craftwork Capital.
Scenario A: You need the money
Which might be better? RSUs
Why? RSUs follow predictable timelines and retain their value. “If I'm trying to fund education for my children, I know when an RSU vests, I have the net of those shares, I can sell them right away and pay for school or invest them in another fund,” Messeca says.
Scenario B: You don’t need the money
Which might be better? Stock options.
Why? Stock options generally are seen as a “high risk, high reward” incentive, Messeca says, which is why startups and other companies with high-growth potential might use them to attract top talent. “If I'm in the investor mindset and in good shape, doing everything I need to do, maybe I'm more willing to focus my efforts on options because my potential upside is very large there.”
Other considerations for RSUs, stock options
While the risk associated with RSUs and stock options may be a key factor to weigh, it’s not the only one. To assess whether RSUs or stock options might be best for you, Messeca recommends gathering the specific details of your plans, including:
The value of the company today. This can give you an idea of what your equity compensation might be worth. Though it’s important to keep in mind that the value likely will change during the vesting period.
The vesting schedule. You’ll want to know when you actually gain a right to the shares.
How readily you could sell the shares. In public companies, selling shares is pretty straightforward. But private companies might have additional stipulations or fewer opportunities to sell any stock you acquire. It could make the tax implications more or less attractive.
And for options, specifically:
The strike price and how it compares to the current value.
Whether it’s an ISO or NSO. That will affect how your shares would be taxed.
Whether your company offers cashless exercising. Some companies permit employees to exercise their options without paying any upfront costs. Instead, the company is reimbursed out of the proceeds of the stock sale.
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