Stock Options versus RSUs: What’s the Difference?

If you’re earning more than $200,000 a year and a meaningful portion of your compensation comes through equity, understanding the difference between stock options and restricted stock units (RSUs) is worth your time. For many, equity compensation is more than simply a perk. It can be a significant contributor to your net worth, retirement planning, and even everyday cash flow.

Options and RSUs have different tax implications, expose you to other kinds of risk, and require you to manage different decision points.  As Louisville-based CFP® professionals, we help professionals craft equity compensation plans optimized for tax efficiency.

In this article, we’ll look at the differences between RSUs and stock options in more detail.

Read Our Latest Quick Guide: Equity Compensation Guide: RSUs, Stock Options & ESPPs

What are Stock Options?

A stock option gives you the right, but not the obligation, to buy company shares at a pre-determined price within a specified period of time. Companies grant employee stock options to align employee incentives with the company’s long-term performance.

Here’s how a basic stock option lifecycle works, along with standard terms associated with stock options:

Grant: You receive an award of stock options with specific terms: the number of shares that can be purchased.

Strike Price (also called an exercise price): The strike price is typically set at the fair market value on the date of grant.

Vesting: You must stay employed for a period of time before you can exercise the options. Common schedules are three- or four-year terms with a one-year cliff, but schedules vary.

Cliff: In stock options, a cliff is the initial period you must work before any options vest. If you leave before the cliff date, often one year, you receive none of the options, even though time has passed.

Exercise: Once vested, you can choose to exercise the option and purchase the stock at the strike price. If the market price is higher than the strike price, you have what’s called “in-the-money” value, and exercising the options can make sense. If the market price is lower than the strike price, you would let the option lapse, and nothing is gained or lost.

Expiration: Options only last for a limited time. They typically expire several years after the grant or after a short period once you leave the company. If you miss that window, the option expires and cannot be exercised.

Sale: After exercise, you own shares. You can sell immediately or hold them for potential future gains.

This sequence appears straightforward on paper. But, there are tax planning considerations that materialize when you exercise the options and/or sell the stock, which we’ll explore more below.

What Are the Two Types of Stock Options?

Most employee stock option plans use one of two option types, each with significantly different tax treatments:

Incentive Stock Options (ISOs): These can result in favorable tax treatment when exercised. If you hold shares for more than one year after exercising AND two years after the grant date, gains may be taxed at long-term capital gains rates rather than as ordinary income. This can be significant for high earners, but it depends on meeting specific holding requirements.

Non-qualified Stock Options (NSOs): With NSOs, the difference between the strike price and the market value at exercise is taxed at ordinary income tax rates and is reported as income on your W-2. NSOs are the options most frequently given to non-executive employees.

What are the risks associated with stock options?

One consequence of accumulating company stock that people often overlook is concentration risk.

Stock options represent future potential value. That potential only exists if the company’s stock price rises above the strike price. If it doesn’t, those options have no economic value, which happens more often than people assume. It’s important to keep this in mind when receiving stock options, as they may not be worth anything in the future.

Chances are you already depend on your employer for income. With stock options, you’re now tying part of your wealth to the same company. This can magnify gains if the stock performs well, but it also concentrates risk if it doesn’t.

How are stock options taxed?

As discussed above, with NSOs, the difference between the strike price and the market value at exercise, known as the “bargain element”, is ordinary income. This means federal, state, and payroll taxes must be paid immediately in the tax year the options are exercised. If you exercise a large block of options in a single year, you could significantly increase your taxable income.

On the other hand, exercising ISOs can defer regular income tax, but doing so introduces the risk of the Alternative Minimum Tax (AMT). Put simply, AMT is a parallel tax system designed to ensure that high-income taxpayers pay at least a minimum amount of tax by limiting certain deductions and credits that could otherwise significantly reduce their regular tax liability.

If your income plus the bargain element from the ISO exercise exceeds the AMT exemption, you may end up paying AMT.

What are RSUs?

Restricted stock units (RSUs) are simpler in structure than stock options, but there is still much to consider if you have been granted this type of equity compensation.

An RSU is a promise from your employer to deliver shares of company stock once you satisfy a vesting schedule. Most of the time, they do not carry voting rights or dividends until vested.

The lifecycle of an RSU looks like this:

Grant: You are told how many units you will receive and when they will vest.

Vesting: At vesting, you receive shares automatically. There is no purchase price and no strike price.

Taxes: The value of the shares at vesting is treated as ordinary income and included on your W-2, just like your salary. Your company often withholds shares to cover taxes owed.

Sale: You can sell any shares you hold after vesting. Gains after vesting are treated as capital gains.

RSUs do not require any cash outlay on your part; instead, shares are given directly to you at vesting.

What are the Risks Associated with RSUs?

RSUs are generally easier to understand than stock options, but that simplicity can hide real risk. Once they vest, you own company shares, and if you don’t actively decide to sell, you’re automatically holding more of the same stock, which can quietly increase concentration risk.

When RSUs vest, they convert into company stock. That stock often sits alongside your salary, bonus, and future equity awards, meaning a large portion of your income and net worth can end up tied to a single company.

The risk:

If your employer’s stock underperforms or faces unexpected issues, the impact can be multiplied. You’re exposed on several fronts at once:

• Job security
• Cash flow
• Portfolio value

Holding vested RSUs without a plan can quietly create an outsized equity position that skews your overall allocation and limits diversification.

This is where working with a CFP® professional in Louisville who can look at your RSUs in the context of your complete financial picture, not as a standalone benefit. That typically includes:

• Measuring how much your net worth and future income is tied to one stock
• Setting decision rules around when to sell versus hold, based on taxes, cash needs, and timing
• Coordinating RSU sales with tax planning, including withholding and capital gains
• Reallocating proceeds to reduce single-stock exposure while keeping your broader goals in view

The goal isn’t to eliminate equity compensation, but to prevent it from dominating your financial life without you realizing it.

What are the tax implications of RSUs?

RSUs do not have optionality built into their tax treatment like stock options. The value of shares at vesting is treated as ordinary income, and if you are in one of the highest tax brackets, this can result in a significant tax increase.

Most companies withhold shares to cover taxes and apply a supplemental 22% withholding rate, though this often falls short for high earners. If the withholding amount is insufficient, you’ll be on the hook for the balance due on your tax return.

After vesting, any gain or loss in the share price is taxed as a capital gain or loss when you sell.

Which is better for me: Stock options versus RSUs?

When people ask which is better, they are usually thinking in terms of “easier” or “more valuable.” The more helpful question might be: Which type better fits your situation?

Key differences to consider between stock options and RSUs

Risk and reward: Stock options offer upside if the stock rises above the strike price, but they risk ending up worthless if the stock doesn’t appreciate. RSUs provide value as long as the stock is worth something. Both expose you to concentration risk if you hold shares and continue to accumulate them over time.

Decision points: Options require active decisions about when to exercise and whether to sell. RSUs give you ownership automatically but still leave you with decisions about diversification and the timing of any sale for tax-planning purposes.

Taxes: Options can offer planning flexibility but are more complex. RSUs create a taxable event at vesting that is harder to manage, as you are not in control of the vesting date.

Read our blog on: What Happens to Your Equity in a Merger or Acquisition?

Frequently Asked Questions About RSUs

For fast-growing startups, options are common. They offer employees potential upside, typically without an immediate guaranteed tax bill. However, if the company stays private for a long time or never goes public, options can expire worthless.

RSUs are more common at established public companies. They create predictable income events and immediate share ownership at vesting. The downside is that significant vesting cliffs can cause large tax bills in any given year, taxed at ordinary income rates, as discussed above.

Before you decide how to handle your equity compensation, consider the following:

• How much of your total net worth is tied to your employer?
• Do you need liquidity now, or are you optimizing for future growth?
• What are the tax implications this year and in future years?
• Does holding shares fit into your diversification goals?

How Peak Asset Management Can Help

Equity compensation should never exist in isolation from your broader financial situation. Peak helps professionals like you integrate stock options and RSUs into a coordinated financial strategy.

This process includes:

• Evaluating the timing and tax consequences of decisions
• Managing concentration risk in your investment portfolio
• Aligning equity with retirement planning, cash flow, and liquidity needs

The value of this approach lies in understanding trade-offs and helping you make choices that support your long-term objectives.

Stock options and RSUs are fundamentally different, with different tax implications and decision points. Only you can decide what’s best for your situation. What matters most is making that decision with clarity, perspective, and a plan that supports your financial priorities.

If you are looking to update your financial plan to include equity compensation strategies this year, connect with our Louisville wealth management team.

Advisory Services offered through Peak Asset Management, LLC, an SEC registered investment advisor. The opinions expressed and material provided are for general information, and they should not be considered a solicitation for the purchase or sale of any security. The information in this material is not intended as tax or legal advice. Please consult legal or tax professionals for specific information regarding your individual situation. All strategies and services described involve risks, tax implications, and potential limitations, and may not be appropriate for every investor; clients should consider these factors carefully before making decisions. This content is developed from sources believed to be providing accurate information and may have been developed and produced by a third party to provide information on a topic that may be of interest. This third party is not affiliated with Peak Asset Management.  It is not our intention to state or imply in any manner that past results are an indication of future performance. Copyright © 2026 Peak Asset Management