
In California, RSU withholding from tech companies now makes up roughly 10% of all state income tax withholding. That’s nearly $10 billion each year. So if you hold restricted stock units, you’re in good company.
From our experience, most people don’t realize how their equity compensation turns into a tax liability. The real question is, “How are RSUs taxed?” The answer comes in two stages. Your vesting schedule triggers taxable income right away.
That ordinary income shows up on your W-2 just like a bonus. And if you hold the company stock, more tax implications follow. Ignore these steps, and a surprise tax bill could ruin your year. That’s why we wrote this guide.
You will learn exactly how RSUs are taxed, what triggers the bill, and how to plan ahead.
Before we go further, we want to point you to a few related resources. We previously compared RSUs vs. stock options in another post. Later, we’ll explain how RSUs are taxed when sold in a follow up article.
And for a deeper discussion, our main pillar post covers restricted stock units tax strategy for oil and gas.
Short Summary
- Vesting date triggers ordinary income. The fair market value on that day becomes taxable wages.
- Employer withholding often falls short. Default rates (22%) may not cover your true tax bracket.
- Selling creates a second tax event. Capital gains tax applies only to appreciation after vesting.
- Hold for over a year to pay lower long term capital gains rates. Short term gains are taxed like ordinary income.
- You are not taxed twice on the same dollars. The original vest value is taxed once. Only future gains get taxed again.
- Tax loss harvesting can offset gains. Sell underwater shares, but avoid the wash sale rule.
- RSUs differ from stock options. RSUs force immediate taxation. Options offer more timing control.
- Large RSU vests can push you into a higher tax bracket. Plan ahead for both federal and state taxes.
- Sell to cover vs. sell all vs. hold. Each strategy affects cash flow and concentration risk.
- Work with a tax professional. RSUs add complexity. Professional advice prevents costly mistakes.
Understanding the Vesting Date: Why RSUs Are Taxed as Ordinary Income
Here’s the truth most people learn the hard way: The moment your restricted stock units turn into actual shares, the IRS treats that like a cash bonus. We’ll walk through what triggers that tax, how the math works, and where withholding can fall short.
What Happens When RSUs Vest?
That calendar day when your restricted stock units (RSUs) become vested RSUs? It changes everything. We call that the vesting date, and it’s your first taxable event. No cash changes hands, yet the IRS still expects its cut.
Here’s how the timeline works. Your employer gives you a grant date on day one. Then you wait through a vesting period (often three or four years). Once that period ends, your RSUs vest. At that very moment, the stock units become generally taxed as ordinary income.
Think of it this way: You just received a paycheck made of stock, not dollars. But the tax man doesn’t care about the form; he only cares about the value.
Most people ask, “Can I delay this tax by not selling?” Nope. The tax hits on the vesting date whether you sell or hold. We’ve seen smart engineers assume they could wait, then April came with a five-figure surprise.
One practical tip: Log into your brokerage account a week before your next vest date. Check the estimated taxable income amount. That number will save you from sticker shock later.

How Fair Market Value Determines Taxable Income
The fair market value (FMV) on your vesting date sets the dollar amount you owe tax on. Simple math here: Fair market equals the stock price at the close of trading that day (or the opening price, depending on your plan).
Multiply that by the number of vested shares. That product becomes your ordinary income based on that single day.
Let’s do a real example. Suppose 100 shares vest for you on June 15. The market value that day is $50 per share. You just created $5,000 of income taxed as ordinary income.
The IRS will treat that $5,000 exactly like extra salary. You’ll pay ordinary income tax at your marginal ordinary income rates.
But wait. What if the stock drops 20% the next week? Too bad. Your taxable income was locked in on the vesting date at $50. You still owe taxes on the full $5,000 even if the shares are now worth less. That painful truth catches a lot of people off guard.
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Payroll Taxes, Withholding, and Why Some Employees Still Owe More
Here’s where things get tricky. Your employer must withhold payroll taxes on those vested shares. That includes Social Security and Medicare. For 2026, the Social Security wage base is $184,500. Any wages above that cap skip the Social Security portion.
Most companies use a method called “sell to cover.” They automatically sell a portion of your actual shares at vesting to withhold taxes. Sounds great, right? Not always. The default tax rate for federal taxes is often just 22% for supplemental wages like RSUs.
But many high earners belong in a 32% (for Married Filing Jointly (MFJ) in 2026, the 32% bracket actually begins at $403,551) or 35% tax bracket. That gap means you still owe taxes come tax season.
Let’s run the numbers. You have $20,000 of RSU income. Your company withholds 22% ($4,400) for federal income taxes. But your true household income pushes your marginal rate to 32% ($6,400).
That leaves a $2,000 shortfall. Multiply that by multiple vesting events, and your tax burden can balloon.
We have a rule of thumb: If your household income exceeds $250,000, set aside an extra 10% to 15% of each RSU vest in a savings account.
Don’t rely solely on your company’s default withholding. (Most companies choose the lowest legal option to simplify payroll; that choice doesn’t serve you well.)
Selling RSUs: How Capital Gains Tax Works
Vesting was round one. Selling is round two. But here’s the good news: You only pay capital gains tax on the growth that happens after vesting. Let’s break down exactly how that works.
The Second Tax Event Explained
When you sell shares after the vesting date, you trigger a second tax event. We call this the sale event. The IRS now wants a piece of any profit you made from the day you vested to the day you sold.
So what’s the difference? Ordinary income already got taxed at vesting. That part is done. Capital gains apply only to the increase in share price after vesting. The tax treatment for gains depends entirely on how long you held the shares.
Here’s a classic question we hear: “Why should I pay capital gains on top of what I already paid?” The answer: you’re not. You’re only paying tax on new value that appeared after you already owned the shares. That seems fair, right?
The tax liability for stock sales splits into two buckets. Short-term capital gains (held less than a year) get taxed like ordinary income.
Long-term capital gains (held more than a year) enjoy lower rates: 0%, 15%, or 20% depending on your income. That lower rate is a huge incentive to be patient.

Understanding Cost Basis and Holding Periods
Your cost basis is the anchor for all this math. It equals the fair market value on your vesting date. That $50 per share from our earlier example? That’s your cost basis.
Now the clock starts ticking. Hold those shares for less than a year, and any gain gets labeled short-term. The rate matches your ordinary income bracket (up to 37%).
Hold them for more than a year, and you unlock long-term capital gains rates. That difference can save you 17 percentage points or more. Not chump change.
Consider two scenarios:
- Scenario A: You sell at $60 per share after only 10 months. That $10 gain is a short-term gain. You pay ordinary income tax at your full rate, say 32%.
- Scenario B: You wait 14 months to sell at that same $60. Now the $10 gain is a long-term capital gains tax at 15% (for most mid-to-high earners). On 1,000 shares, that’s $1,700 saved just by waiting four extra months. Patience pays—literally.
We tell people to mark their calendars. Set a reminder for 366 days after each vest date. That one day can save you thousands.
Why RSUs Are Not Actually Taxed Twice
Let’s kill a myth right now: RSUs are not taxed twice on the same dollars. That rumor spreads like wildfire every tax season. Here’s what actually happens:
Vesting creates ordinary income on the full value at that time. You pay taxes once. Then when you sell, future gains get taxed separately. But notice: the original $50 per share never gets taxed again. Only the new $10 gain sees additional taxes.
Take our example: Shares vest at $50. You pay ordinary income tax on $50. Then you sell later at $60. You pay capital gains tax only on the $10 increase. The $50 basis comes out tax-free. So how much tax do you actually owe on the original $50?
Zero, because you already paid it at vesting.
The system isn’t double-dipping; it just feels that way because the two events happen at different times.
The best way to pay taxes accurately: Keep a simple spreadsheet.
- Column A: vest date and FMV.
- Column B: sale date and price.
- Column C: gain (sale price minus FMV).
You’ll never get confused again.
Using Capital Losses to Minimize Taxes
What if your company stock drops after vesting? You can turn that lemon into lemonade. A capital loss offsets your capital gains from other stock sales. This strategy is called tax-loss harvesting.
Here’s how it works: Sell the underwater shares at a loss. Use that loss to cancel out gains you booked elsewhere in the same year. No limit on offsetting gains.
If your losses exceed your gains, you can deduct up to $3,000 against ordinary income each year. The rest carries forward to future years.
But watch out for the wash-sale rule. That rule says you can’t buy the same or a substantially identical security within 30 days before or after the sale that generated the loss.
Do that, and the IRS disallows your loss. So if you sell RSU shares at a loss, don’t repurchase company stock for at least 31 days.
We have a favorite quote from tax expert Mark J. Kohler: “Losses are not failures. They are deferred deductions waiting for the right moment.”
That mindset shift helps people stop panicking when a stock drops. Instead, they harvest the loss and move on.
A practical example: You sold some crypto at a $10,000 gain earlier this year. Then your RSU shares dropped $8,000 below their vest price. Sell those RSU shares before December 31.
The $8,000 loss wipes out $8,000 of that crypto gain. You only pay tax on the remaining $2,000. That’s smart financial planning, not luck.

Strategic Planning: How Are RSUs Taxed vs. Stock Options?
Two forms of equity compensation. One hits your tax bill immediately. The other gives you more control over timing. We’ll compare them side by side so you can see which fits your financial life better.
RSUs and Stock Options: The Key Tax Differences
Let’s start with the biggest distinction. RSUs and stock options aren’t the same beast. A stock award like an RSU gives you actual shares at vesting. You owe ordinary income tax right then.
Stock options (specifically nonqualified ones) only trigger taxes when you exercise them. That exercise is your choice, not a forced event.
Unlike stock options, RSUs don’t let you delay. The vesting date decides everything.
Consider this scenario: an employee has 10,000 RSUs vest on a single day when the stock price is $40. This creates an immediate $400,000 income spike that is taxed as ordinary income automatically. Because the vesting date is fixed, there’s no way to defer the tax liability.
Now for the good news. Incentive stock options (ISOs) offer tax-deferred growth. You pay no ordinary income tax at exercise (though the spread counts for the alternative minimum tax).
Hold ISOs for one year post-exercise and two years post-grant, and all gains become long-term capital gains. RSUs have no such pathway. They offer simplicity and guaranteed value but provide none of the strategic tax-deferral flexibility found in incentive options.
As tax expert Bruce Brumberg often notes, while RSUs offer simplicity, stock options provide the “levers” necessary for sophisticated tax planning. Choose your adventure.
How Large Stock Awards Can Push You Into a Higher Tax Bracket
Large RSU grants can dramatically increase total income in a single year, often pushing families into a higher tax bracket faster than expected.
The Scenario:
- Base Salary: $180,000
- RSU Vesting Value: $120,000
- Total Taxable Income: $300,000
That $120,000 spike does more than just move the needle—it can trigger higher federal marginal rates, hit surtax thresholds like the 3.8% NIIT, and significantly increase state tax liability (a familiar pain for California employees).
The Bottom Line: A larger compensation package builds wealth on paper, but it also creates an immediate “tax cliff.” In a high-income year, timing and cash-flow planning matter more than ever.
Sell to Cover vs. Sell All Strategies
You have three choices when RSUs vest. Each affects your cash flow and risk profile. Let’s break them down.
- Sell to Cover: The company automatically sells shares to cover taxes. You keep the remaining shares. This is the default at most firms. It solves the immediate cash problem.
But you still hold concentrated, vested shares in one company. - Sell All: Sell every single share at vesting. Pay taxes from the proceeds. Walk away with cash. This strategy eliminates single-stock risk. You can reinvest into a diversified portfolio. The downside? You lose out on future gains if the stock skyrockets.
- Hold for Future Gains: Sell nothing extra. Pay the tax bill from other cash savings. Keep all shares. This works great if the stock doubles. But if it crashes, you still owe the same tax on the vest value.
Here’s what most people miss. Your financial plan should match your financial life stage.
- Early career? Sell all and diversify.
- Late career with high net worth? Maybe hold a portion.
- We advise a hybrid approach: sell enough to cover taxes plus an extra 20% to 30% to diversify. That gives you upside exposure without betting the farm.
A wise investor once told us, “No single stock is worth your peace of mind.” We agree.

Professional Wealth Management: Preparing for Tax Time
Don’t wait until April to gather paperwork. Start a dedicated “Tax 2026” folder in January. Here’s what belongs inside:
- Form W-2: This shows your RSU income already added to your total wages (usually in Box 1). Compare this against your year-end paystub to ensure all vested units were captured.
- Form 1099-B: Your brokerage issues this for any stock sales. It reports your sale proceeds, but beware: it often lists a “$0” or “Incomplete” cost basis for RSUs.
- Supplemental Tax Report: This is the most important “missing” document. It provides the adjusted cost basis (the price of the stock when it vested). You need this to fill out Form 8949 and avoid being taxed twice on your shares.
Pro Tip: Brokerages often issue “preliminary” 1099s in mid-February and “corrected” versions in March. Set a calendar reminder for March 20th. Gathering your documents then—rather than in February—ensures you are working with final, corrected data.
Building a Long-Term Tax and Wealth Strategy
RSUs aren’t just an annual problem. They are a multi-year puzzle. A strong wealth management approach connects each vest to your bigger goals.
For example, if you plan to buy a house in three years, sell RSUs at vest and park the cash in a money market fund. Don’t gamble the down payment on your employer’s stock price.
A tax professional or financial advisor can model different vesting scenarios. They’ll show you how to time sales for long term gains. They’ll also help you pair losses with gains. That coordination is hard to do alone.
We recommend an annual meeting every October. Review your compensation package for the next 12 months. Estimate total stock compensation income. Then decide on a sell strategy. This proactive habit prevents the year-end rush. It also keeps your financial plan on track.
Final Thoughts
RSUs are a great perk, but they need a plan. You owe ordinary income at vesting. Then capital gains tax on any later price jump. Watch out for withholding gaps too.
Those gaps can leave you with a surprise tax liability in April. A good tax professional helps you see the full picture. Don’t just pay taxes blindly. Learn the tax implications early. That’s how you keep more of your money.
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