How Are Stock Options and RSUs Taxed?
Last reviewed: July 2026
Stock options and RSUs are taxed at different points and at different rates depending on the type of equity you hold. RSUs are taxed as ordinary income the moment they vest, on the full market value of the shares. Incentive stock options (ISOs) can qualify for long-term capital gains treatment if you meet holding rules, but they can trigger the Alternative Minimum Tax at exercise. Non-qualified stock options (NSOs) are taxed as ordinary income on the spread when you exercise. The strategy you choose with your stock options RSUs tax situation often determines whether you keep most of your equity or hand a big chunk to the IRS.
Key Takeaways
- RSUs are taxed as ordinary income at vesting; you owe tax even if you never sell a single share.
- ISOs can reach the 2026 long-term capital gains rates of 0%, 15%, or 20% if you hold long enough.
- The AMT exemption for 2026 is $90,100 for single filers and $140,200 for married joint filers.
- Employer RSU withholding defaults to 22% federal, which often underpays high earners and creates an April surprise.
- Holding shares one year past vesting or exercise can shift future gains from ordinary rates to capital gains rates.
About the Author: Jeff Judge, CFP®, AEP®, ChFC®, CLU® is Managing Partner of Chesapeake Financial Planners in Forest Hill, Maryland. He has been helping families and business owners in Harford County and the Baltimore metro area navigate equity compensation since earning his CFP® certification in 2013, by using Chesapeake Financial Planners’ signature process, the R.U.D.D.E.R. method™. Jeff often tells clients the most expensive mistake with RSUs isn't picking the wrong stock; it's forgetting that vesting itself is a taxable event and getting blindsided by a withholding gap the following spring.
Equity compensation builds real wealth, but it also creates real tax liability at several stages. The gap between handling it deliberately and handling it by accident can run into tens of thousands of dollars. Below, we break down how each equity type is taxed and the planning moves that keep more of what you earned.
What Is the Difference Between RSUs, ISOs, and NSOs?
Restricted stock units, incentive stock options, and non-qualified stock options each follow separate tax rules, and knowing which one you hold is the first decision point. Get this wrong and every strategy that follows is built on sand.
RSUs (Restricted Stock Units) are shares your employer promises to deliver as they vest, usually over three to four years. There is no tax at grant. At vesting, the full fair market value is taxed as ordinary income, exactly like a salary bonus, and your cost basis becomes that vesting price.
ISOs (Incentive Stock Options) give you the right to buy shares at a fixed strike price. No regular tax hits at grant or exercise, but the spread at exercise counts toward the Alternative Minimum Tax. Hold the shares at least two years from grant and one year from exercise, and all profit qualifies for long-term capital gains treatment.
NSOs (Non-Qualified Stock Options) also let you buy at a strike price, but without the ISO tax break. At exercise, the spread between market price and strike price is taxed as ordinary income, and your employer withholds on it.
The R.U.D.D.E.R. Method™ is Chesapeake Financial Planners' six-step planning process: Review and Recognize, Uncover and Understand, Design and Develop, Discuss and Decide, Execute and Empower, and Reassess and Refine. We start equity comp clients at "Uncover and Understand" precisely because so many people don't know which type they hold until we read the grant agreement together. Jeff Judge notes: "It surprises people how often someone holding equity compensation for years has never actually read their grant agreement and doesn't know whether they have ISOs or NSOs, because that single distinction determines every tax decision that follows."
What happens to my stock options when I leave my company?
How Are RSUs Taxed at Vesting and at Sale?
RSUs trigger ordinary income tax at vesting on the full fair market value of the shares, and capital gains tax later on any growth beyond that value. This two-stage treatment is where most surprises live.
When 1,000 RSUs vest at $100 per share, you've just recognized $100,000 in ordinary income. Your employer typically withholds 22% federal under the supplemental wage rule, but a high earner can sit in the 32%, 35%, or 37% federal bracket, plus state tax. That 22% default can leave a five-figure gap due the following April.
After vesting, your cost basis is the vesting price. Sell immediately and there's no additional gain. Hold and sell later, and the difference between sale price and vesting price is a capital gain or loss. Hold more than a year and that growth qualifies for long-term capital gains rates instead of ordinary rates.
Jeff has watched clients with concentrated RSU positions ride a stock down 40% while still owing tax on the original vesting value. The tax bill is locked in at vesting; the share price is not.
What happens to my finances after a liquidity event?
How Do ISOs and the AMT Work Together?
ISOs can produce long-term capital gains on the entire profit, but exercising them can pull you into the Alternative Minimum Tax on paper gains you haven't cashed. This is the trap that catches the most people.
At exercise, the spread between the strike price and the fair market value is an AMT preference item, even though you owe no regular tax. For 2026, the AMT exemption is $90,100 for single filers and $140,200 for married couples filing jointly, and it phases out at higher income. A large ISO exercise can push you over the line and create a cash tax bill on stock you still hold.
The payoff for surviving the AMT is the holding-period bonus. Keep the shares two years from grant and one year from exercise, and the full gain is taxed at the 2026 long-term capital gains rates of 0%, 15%, or 20% rather than ordinary income rates that top out at 37%. According to the IRS, selling before those holding periods are met creates a disqualifying disposition, converting part of your gain back to ordinary income.
What Should I Do After My Startup Gets Acquired?
What Tax Strategies Reduce the Bite on Equity Comp?
The strongest equity tax strategies revolve around timing income across years, managing withholding, and holding for capital gains treatment when the risk is acceptable. None of them work if you wait until a vesting or exercise event has already happened.
A few that we use with clients:
- Cover the withholding gap. Estimate your true marginal rate and make a quarterly estimated payment to close the difference between 22% withholding and what you actually owe.
- Spread exercises across tax years. For ISOs, exercising in tranches can keep you under the AMT threshold instead of triggering it all at once.
- Hold for long-term gains when warranted. Converting future appreciation from ordinary rates to capital gains rates can save 15 to 17 percentage points, but only diversify-first if a single stock dominates your net worth.
- Coordinate with charitable giving. Donating appreciated long-term shares can sidestep the capital gain entirely while delivering a deduction.
Concentration risk deserves its own warning. A position that grew to half your liquid net worth is a single point of failure, regardless of how the gain is taxed.
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Frequently Asked Questions
When are RSUs taxed?
RSUs are taxed as ordinary income at vesting, based on the full fair market value of the shares on the vesting date. You owe this tax whether or not you sell any shares. If you later sell, any gain above the vesting value is taxed as a capital gain, long-term if you hold more than one year.
Do I pay tax twice on RSUs?
No, you do not pay tax twice on the same dollar. You pay ordinary income tax once at vesting on the share value, and your cost basis resets to that value. When you sell later, you are only taxed on the additional gain above the vesting price, not the full sale amount again.
What is the AMT problem with incentive stock options?
The Alternative Minimum Tax can apply to the spread between your strike price and the market price when you exercise ISOs, even though you owe no regular tax and haven't sold. For 2026, the AMT exemption is $90,100 for single filers and $140,200 for joint filers before phaseout, so a large exercise can create a real cash tax bill on paper gains.
How are non-qualified stock options taxed?
NSOs are taxed as ordinary income at exercise on the spread between the strike price and the market price, and your employer withholds taxes on that amount. Your cost basis becomes the market price at exercise. When you later sell, any further growth is taxed at capital gains rates, long-term if held more than a year.
Should I sell my RSUs as soon as they vest?
Selling RSUs at vesting eliminates concentration risk and triggers no additional tax, since your basis equals the vesting value. Holding could convert future gains to long-term capital gains rates, but it exposes you to single-stock risk. Many clients sell enough to diversify and hold only what fits their broader plan.
How much tax will I owe on equity compensation?
Your equity tax depends on the type, the amount, and your marginal bracket. RSUs and NSOs are taxed at ordinary rates up to 37% federal for 2026, plus state tax. Qualifying ISOs can reach long-term capital gains rates of 0%, 15%, or 20%. Without planning, large equity events can push 40% or more toward taxes.
If equity compensation is part of a job change, acquisition, or windfall you're navigating right now, our guide on sudden wealth and liquidity events walks through the full decision sequence. Download it at chesapeakefp.com to see how the tax pieces fit the rest of your plan.
Want to go deeper? Our Tech Equity Tax Traps Guide walks through this step by step.
Disclosures
The information provided is for educational purposes only and should not be construed as investment advice. Investment strategies should be tailored to individual circumstances, risk tolerance, and goals. Past performance doesn't guarantee future results. Consult with qualified financial professionals regarding your specific situation.
This information is not intended to be a substitute for specific individualized tax, investment or legal advice. We suggest that you discuss your specific situation with a qualified tax, legal or financial advisor.
Advisors associated with Chesapeake Financial Planners may be either (1) LPL Financial Registered Representatives offering securities through LPL Financial, Member FINRA and SIPC, and investment advisor representatives offering investment advice through Great Valley Advisor Group; or (2) solely investment advisor representatives offering investment advice through Great Valley Advisor Group and not affiliated with LPL Financial. Great Valley Advisor Group, and Chesapeake Financial Planners are separate entities from LPL Financial.
