top of page

Stock Options: An Owner's Manual to Understand Them

How to understand stock options and the tax implications

Stock options can be an attractive component to your compensation plan, especially if you’re at a pre-IPO start-up, a growing public company, or a blue chip that just developed an amazing product. Stock options can provide a boost to your current and long-term wealth.

Making sense of ISOs, NSOs or RSUs can be easier said than done, and like everything else, the devil is in the details. Maximizing your profit is just one side of the equation – taxes are also a major consideration, and the rules are complex. This short read will arm you with enough info to get you started on sorting out your situation.

When it Comes to Stock Options, Start with the Basics

When you receive stock options, your company isn’t handing you actual shares of stock right away. Instead, you receive the right to purchase shares of company stock at a certain price. In most instances, they are below market value. Hopefully, the shares’ price will rise over time, enabling you to sell them at a higher price than when you first exercised the options.

When you exercise your stock options, you purchase shares of your employer’s common stock at the price indicated in your option grant. The spread is the difference in value between the strike price and the shares' value when you exercise your options. However, you aren’t obligated to exercise your options.

Before you can exercise the options or purchase the shares, the stock must first vest, meaning you must work for the company for a certain amount of time to obtain those shares. In some instances, you may be able to exercise your options early, i.e., before they vest. That move can have tax advantages, but there are downsides as well. You may be prohibited from selling shares of your stock to purchase the vested shares, meaning you’d have to shell out your own money.

Stock options can be the more common non-qualified stock options (NSOs) or incentive stock options (ISOs). These can provide tax benefits but can also trigger complications from the alternative minimum tax (AMT). As an example, incentive stock options enable employees to convert part or all the potential stock earnings into capital gains if they hold on to the stock for a certain period of time.

Some Key Questions to Ask About Your Stock Options

How Do I Exercise My Stock Options?

Exercising stock options means buying shares of your employer’s common stock at the price specified in your option grant. Your company may have an agreement with a brokerage company to execute these stock purchases. Once you own actual shares, you do not have to sell them immediately. You are also not required to exercise your options.

How Much Time Do I Have to Exercise My Stock Options?

If your company does not offer early exercising, you can only exercise options once they are vested, which varies from company to company.

What Should I Consider When Deciding Whether to Exercise My Stock Options?

  1. Are the options in-the-money or underwater? If they are underwater (trading below your exercise price), it may be prudent to wait for the stock price to rise.

  2. Is your company public? If your company is private and does not have plans for filing an IPO in the near term, exercising your options may be risky because you are purchasing shares that may not become liquid. If your company has not yet launched an IPO, you must purchase these shares in cash.

  3. Will you have to pay taxes? Depending on your situation (such as what kind of options you have, the number you were granted, your other compensation, etc.), you may have to pay taxes at the time you exercise them.

After exercising your options, you may want to consult with a financial advisor and a tax advisor to discuss the most advantageous and profitable manner to sell the stocks. The type of options you have and your holding period after exercising your options will significantly impact your tax liability.

Non-Qualified Stock Options (NSOs)

NSOs are the most common type of stock options. Most companies typically choose to hand out non-qualified stock options to employees for tax reasons: they can deduct the costs of NSOs as an operating expense sooner than with other options.

And unexercised NSOs can be passed on to others, i.e., in a divorce or as gifts. In addition, the IRS doesn’t limit the total number or value of NSOs that a company can grant to an employee.

If you make money when you exercise your shares (i.e., your strike price is lower than current market price), this is considered ordinary income and will be reported on your IRS form W2 for the year you exercised the options.

Once you receive the shares, you have the choice of either selling them or holding on to them. At this point, they are like any other stock investment and will be subject to capital gains tax.

Incentive Stock Options (ISOs)

There is a limit on the total value of ISOs that can vest and can be exercised in any calendar year ($100,000), and you cannot transfer them to other people like the NSOs.

Taxation can be more advantageous so long as a strict schedule is adhered to. You’ll need to hold onto the shares for a minimum of two years from the grant date and one year from the exercise date to qualify for long-term capital gains. If your company is pre-IPO (initial public offering), this can take some very careful planning to keep your lock-up periods in mind.

ISOs can also subject you to the alternative minimum tax (AMT), which is higher than your normal taxes. The AMT is adjusted based on the price you pay for the shares (the strike price) and the fair market value when you exercise.

Because you can choose when to exercise, you do have some flexibility in avoiding or minimizing AMT, but it requires careful tracking of your income. A financial advisor or tax professional can usually help you model out various scenarios to select the right one for your situation.

Restricted Stock Options (RSUs)

RSUs are a transfer of stock from your employer to you that will vest at a later date—thus, you are restricted on when you can sell them.

Once they reach the date they are vested, you automatically own the stock. You can do with it what you would like. It’s essential to keep in mind, though, that the fair market value of the stock is included in your taxable wages. This typically doesn't happen until after they've vested, especially when they're awarded as part of the company's initial public offering (IPO).

The Bottom Line

Working with a qualified financial planner or tax advisor can help you make sense of the details about your stock option compensation, so don’t hesitate to ask for some guidance. In my practice, I’ve advised clients who come to be only after they’re hit with a surprisingly large tax bill. Understanding your tax picture before you exercise your options can go a long way towards minimizing the tax impact.


This work is powered by Advisor I/O under the Terms of Service and may be a derivative of the original. This is for informational purposes only, is not a solicitation, and should not be considered investment, legal or tax advice. The information in this report has been drawn from sources believed to be reliable, but its accuracy is not guaranteed, and is subject to change. Investors seeking more information should contact their financial advisor.

References to any company, securities, investable product, exchange, or technology are for illustrative purposes only, and not an endorsement or recommendation to buy or sell any investment, product, or service.

Investing involves risk, including the possible loss of principal. Past performance does not guarantee future results.

Investments in equities, bonds, options, and other securities, whether held individually or through mutual funds and exchange traded funds, can decline significantly in response to adverse market conditions, company-specific events, changes in exchange rates, and domestic, international, economic, and political developments. Futures trading involves a high degree of risk and is not suitable for all investors.


bottom of page