Unlocking the Benefits
By Matt Baran

Stock compensation has become an increasingly common form of employee compensation, particularly in tech startups, large corporations, and publicly traded companies. This form of compensation allows employees to benefit from their company’s success by offering them the ability to acquire shares of the company’s stock. Stock compensation also allows companies to save cash while still providing their employees with a form of payment.
There are different types of stock compensation plans available, each with its own set of benefits and tax implications. The most common types are incentive stock options (ISOs), non-qualified stock options (NSOs), and restricted stock units (RSUs). Understanding these options is essential for employees to make informed decisions about their compensation and plan for potential tax obligations.
Incentive Stock Options
Incentive stock options are a type of stock option that provides employees the right to purchase company shares at a fixed price (known as the exercise price) after a certain vesting period.
ISOs have unique tax advantages that make them appealing to employees. When employees exercise ISOs and hold onto the shares for at least one year after exercise and two years after the grant date, any gains from the sale of the stock are taxed as long-term capital gains rather than ordinary income, providing favorable tax treatment as long-term capital gain rates are typically lower than ordinary tax rates.
ISOs do not trigger ordinary income tax when they are exercised, as long as the employee meets the holding-period requirements previously mentioned. This allows employees to potentially defer taxes until they sell the shares. If the holding-period requirements are not met, the sale would be considered a disqualified disposition and subject to ordinary tax rates, on both the spread and any additional gains after purchase.
Matt Baran
“Restricted stock units are valuable because they provide employees with an equity stake in the company once the shares vest. Unlike stock options, which have value only if the company’s stock price rises above the exercise price, RSUs have intrinsic value as long as the company’s stock has value.”
While ISOs provide the benefit of capital-gains tax treatment, they come with the risk of triggering alternative minimum tax (AMT). The spread between the exercise price and the fair market value of the stock at the time of exercise is considered a preference item for AMT purposes, potentially causing employees to owe additional taxes even if they do not sell the stock immediately. Any AMT paid in a tax year can typically be taken as a credit in the next year the taxpayer is not subject to AMT.
Non-qualified Stock Options
Non-qualified stock options are the most common type of stock options granted by companies. Similar to ISOs, employees are granted the right to purchase shares at the exercise price. Unlike ISOs, NSOs do not receive the same favorable tax treatment and can trigger tax consequences at the time of exercise.
When an employee exercises NSOs, the difference between the exercise price and the fair market value of the stock is taxed as ordinary income. This means that the employee will face immediate income-tax liability on the spread at exercise. The combination of the amount paid for the shares plus the taxable spread upon exercise becomes the tax basis in the shares and will be used in the calculation of gain or loss when the shares are sold. Any gains or losses will be treated as capital gains, either short- or long-term, depending on the holding period.
Restricted Stock Units
Restricted stock units are valuable because they provide employees with an equity stake in the company once the shares vest. Unlike stock options, which have value only if the company’s stock price rises above the exercise price, RSUs have intrinsic value as long as the company’s stock has value. Vesting, in relation to RSUs, is typically on a time-based schedule.
There are also performance stock units (PSUs), in which an employee must hit certain performance metrics to trigger the stock to vest. RSUs and PSUs are treated the same for tax purposes.
The shares are taxed at their fair market value when they vest, and employees usually elect a ‘sell-to-cover’ withholding method, meaning a portion of the vested shares are sold immediately to cover federal, state, and FICA withholdings. Employees with high tax rates should be conscientious of the withholding rate and consider making additional estimated tax payments, if necessary.
The fair market value that is taxable upon vest becomes the tax basis in the shares. Any gains or losses from sales of that stock are capital in nature and will be taxed at either short- or long-term rates, depending on the holding period.
Planning for Stock Compensation
Planning is paramount regarding stock compensation. It is important for employees to be aware of the relevant dates, including the grant date, exercise date, vesting date, and holding period once the employee gains ownership of the shares. For all types of stock compensation, employees must understand what type of stock compensation they were granted and the nature and timing of taxation, and have a plan for managing cash flows and executing sales of the stock down the road.
There are other planning considerations, including the long-term outlook of the company, the employee’s personal portfolio and diversification, and how other sources of taxable income impact tax liabilities and tax rates.
Bottom Line
Employees should carefully consider the type of stock compensation they receive and plan accordingly to manage their tax liabilities and maximize the benefits. As always, consulting a tax professional is recommended to navigate the complexities of stock compensation.
Matt Baran is a tax manager at MP CPAs





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