The Tech Employee’s Complete Guide to RSUs
Glossary, Taxes, Strategy, and the 13 Mistakes That Cost You Money
By Alex Caswell, WealthScript Advisors • Updated 2026 • 20 min read
IN THIS GUIDE
1. What This Guide Is (and What It Is Not)
2. The RSU Glossary: Every Term You Need to Know
3. How RSUs Are Taxed: The Full Picture
4. Hold or Sell? A Decision Framework
5. If You Decide to Hold: Capital Gains and the IPO Wrinkle
6. The 13 Most Common RSU Mistakes
1. What This Guide Is (and What It Is Not)
There are dozens of RSU guides online. Most of them tell you the same thing: RSUs vest over time, they’re taxed as ordinary income, and you should “consider your options.” That’s not wrong. It’s just not enough.
If you’re a tech employee or founder and RSUs are a meaningful part of your compensation, you need more than definitions. You need a framework for making real decisions. When should you sell? When does holding actually make sense? How do you avoid the tax surprises that catch people every single year? And what are the behavioral traps that lead smart people to make expensive mistakes with their equity?
That’s what this guide covers. We built it around three things:
A complete glossary so you understand every term on your grant agreement, your pay stub, and your brokerage statement. Not just the basics. All of them.
A decision framework for the hold-or-sell question, with the reasoning behind each factor so you can apply it to your own situation rather than following generic advice.
The 13 most common mistakes we see tech employees make with their RSUs, from tax planning gaps to behavioral biases that quietly erode wealth over time.
This is not tax advice or a recommendation to buy or sell any security. It’s an educational resource designed to help you ask better questions and make more informed decisions about your equity compensation. Your situation is unique.
Tech employees and founders at public and pre-IPO companies who receive RSUs as part of their compensation. Whether you’re early in your career and just received your first grant, or you’re a senior leader sitting on years of accumulated company stock, this guide is designed to meet you where you are.
2. The RSU Glossary: Every Term You Need to Know
One of the biggest barriers to making good decisions with RSUs is the vocabulary. Here’s every term worth knowing, organized by category.
Your RSU Award
Award
The total RSU package you are receiving. Your award document specifies the grant date, vesting schedule, cliff, vesting requirements, and any legal and tax considerations. Usually provided as a PDF from HR. If you haven’t read yours, you should.
Grant Date
The date your RSU award officially begins vesting. Established by the company and not necessarily the same as your hire date. Get clarity on this as soon as you start. Each refresh or new award has its own grant date.
Cliff
The date when the first batch of your shares becomes yours. Typically, one year after the grant date, usually 25% of the total award. Until you hit the cliff, you own zero shares from that grant.
Vesting Schedule
The timeline for when you will receive your shares and how many at each interval. Usually specified by periods (quarterly, monthly, annually). The number of shares released is expressed as a fraction of the total award, such as 1/16th per quarter.
Vesting Requirements
The conditions you need to meet to receive shares. Usually time-based (continued employment). Sometimes performance-based, particularly at senior levels.
Refresh Grant
A new RSU award is provided after you’ve been employed for some time, usually at your annual performance review. Comes with its own grant date, cliff, and vesting schedule. As seniority increases, refresh grants typically increase in size.
Pre-IPO and Liquidity Terms
Double Trigger Event
A vesting structure common at pre-IPO companies. Requires two conditions: a time requirement (continued employment) and a liquidity event (IPO, merger/acquisition, or tender offer). Shares are not released until both triggers are met.
Tender Offer
A solicitation, usually from an outside investment firm, to buy a certain number of shares from employees at a specified price. Typically voluntary. Can provide liquidity before an IPO.
409A Fair Market Value (FMV)
An independent appraisal of the stock price in a private company. Required by Section 409A of the tax code. Usually updated annually, during fundraising, or as the company approaches an IPO or acquisition.
Lock-Up Period (Blackout Period)
The period after a traditional IPO (typically 180 days) during which employees cannot sell shares. Exists to prevent destabilizing insider selling.
Direct Listing
An alternative to a traditional IPO where existing shares are listed on an exchange without issuing new shares. Typically does not have a lock-up period.
At Vesting: Shares and Taxes
Total Released / Delivered
The gross number of shares that vested on a given date, before any are withheld for taxes. Think of this as the top-line number on your RSU payout.
Shares Withheld
The number of shares your company automatically holds back and liquidates to pay taxes. Critical detail: the amount withheld is usually not enough to cover the full tax bill you will owe.
Supplemental Tax Withholding
A flat federal rate applied to RSU income: 22% on the first $1,000,000 of RSU value per year, 37% above that. Because 22% is usually lower than a tech employee’s effective rate, a gap is created that becomes a bill at tax time.
Effective Tax Rate
The blended average rate at which your total income is taxed across all marginal brackets. If your effective rate is 32% but your employer withholds 22% on RSUs, you have a 10-point gap on every dollar.
FICA Taxes
Federal Insurance Contributions Act taxes: Social Security (6.2% up to the annual wage base) and Medicare (1.45% with no cap). RSU income is subject to FICA in addition to income taxes.
Quarterly Estimated Taxes
The IRS requires you to pay taxes throughout the year. If your employer’s withholding falls short, you may need to make quarterly payments directly or face an underpayment penalty.
SUI/SDI Withholding
State unemployment insurance and state disability insurance taxes that may be withheld from RSU income, depending on your state.
After Vesting: Selling and Capital Gains
Capital Gains
Tax on the difference between your sale price and your cost basis (fair market value at vesting). Gain = taxable. Loss = potentially usable to offset other gains.
Short-Term Capital Gains
If you sell within 12 months of vesting, the gain is taxed at your ordinary income rate. No special tax benefit.
Long-Term Capital Gains
If you hold for more than 12 months after vesting, the gain qualifies for the lower capital gains rate (typically 15%-20% for most tech employees, vs. 22-37% ordinary income).
Trading Window
The period during which employees of a public company can sell shares. Usually opens after earnings are announced. Can last weeks or just days.
Transfer Agent
The firm holding your shares. Private companies typically use Carta or Shareworks. Public companies use brokerages like Schwab, Morgan Stanley, or E-Trade.
3. How RSUs Are Taxed: The Full Picture
RSU taxation trips up more tech employees than almost anything else. If you only take one thing away from this entire guide, let it be this section.
At Vesting: Ordinary Income
RSUs are taxed as ordinary income the moment they vest. Not when you sell them. Not when the stock moves. The day the shares are delivered, the full fair market value is added to your W-2 income. You owe federal income tax, state income tax, Social Security, and Medicare on the entire vested amount.
Your employer handles the initial withholding by automatically selling a portion of your vested shares and sending the proceeds to the IRS and your state tax authority. The remaining shares are deposited into your brokerage account.
The Withholding Gap
For federal taxes, your employer withholds at a flat supplemental rate of 22% on the first $1,000,000 of RSU income per year. Everything above $1,000,000 is subject to a 37% withholding rate.
For most tech employees, 22% is well below their actual marginal rate. If you’re in the 32% or 35% bracket, there’s a 10 to 13 percentage point gap on every dollar of RSU income. Over a year of quarterly vests, that gap adds up to a substantial tax bill in April.
Consider setting aside roughly 15% of each vesting amount (before withholding) as a cash buffer for the gap. A tax advisor can help you calculate the precise number based on your total comp, state, and filing status.
Quarterly Estimated Taxes
The IRS expects you to pay taxes throughout the year. If your employer’s withholding falls short, you may need to make quarterly estimated payments. Failure to do so can result in an underpayment penalty. It’s avoidable with proactive planning.
After Vesting: Capital Gains
Once shares vest and ordinary income tax is triggered, everything thereafter is in capital gains territory. Your cost basis is the fair market value at vesting. Sell within 12 months: short-term gain taxed at ordinary income rates. Hold more than 12 months: long-term gain taxed at 15% or 20%.
4. Hold or Sell? A Decision Framework
This is the question every RSU holder faces at every vest. There is no universal answer. But there is a framework for thinking it through clearly, one that accounts for your goals, age, other assets, risk tolerance, and your view of the company.
The framework walks through a series of questions. Each one narrows the path toward “hold” or “sell.” The important thing is not just the question, but understanding why it’s being asked and how your honest answer should shape your decision.
Note: The visual flowchart version of this framework is included in the HTML version of this blog post. Below, we walk through each decision point in detail.
The Questions, Explained
“How Important Are My Goals?”
This is the threshold question. Think about the financial goals you’ve set: buying a home, reaching financial independence, funding education, building a safety net. Are these must-have goals or nice-to-have? Would missing them fundamentally change the future you’ve envisioned?
A concentrated stock position is the opposite of certainty. If your goals are critical, the framework pushes toward selling and diversifying. You can’t bet a major life milestone on a single stock. If your goals are more aspirational, you have more room to take risk.
“Do I Have Other Assets?”
If your goals are critical, do you have other investments, cash, or income to fund them independently? Or is your equity compensation the primary engine for your financial future?
If RSUs are the only meaningful asset standing between you and your goals, selling and diversifying is essential. You’re carrying dual risk: income and savings both tied to one company. If it stumbles, both decline simultaneously.
“How Old Am I?”
If you’re 18-35, you have decades of future income and compounding. A setback is recoverable. You have more room for concentrated risk.
If you’re 36-75, major milestones are closer: retirement, college, career transitions. The consequences of a concentrated position going wrong are harder to recover from.
“RSUs as a Percentage of My Net Worth?”
Is your accumulated company stock a small piece of a diversified picture, or a dominant portion? If less than 5%, the incremental risk of holding is manageable. If more than 5%, concentration risk is material and the default shifts toward selling.
“Bullish or Bearish on the Company?”
Do you believe the company has a strong future over the next 1, 5, or 10 years based on publicly available information? If bearish, sell and redeploy. If bullish, one final question remains.
“Am I a Sophisticated Investor?”
Do you understand the risks of concentration? Are you familiar with market cycles and behavioral traps? Do you have hedging strategies (protective puts, collars, systematic diversification schedules)?
If yes, holding a small, deliberate position can be reasonable. If no, selling and diversifying is the safer path. This isn’t about intelligence; it’s about having the right tools.
The Reframe That Clarifies Everything
If your employer paid you a cash bonus today equal to your vested RSUs, would you immediately buy shares of company stock? If the answer is no, holding by default is doing the same thing passively.
5. If You Decide to Hold: Capital Gains and the IPO Wrinkle
If holding makes sense for your situation, understand the tax timeline. Your cost basis is the FMV on the vesting date. Any appreciation is a capital gain. Any decline is a capital loss.
Sell within 12 months: short-term gain taxed at ordinary income rates (32-37%). Hold more than 12 months: long-term gain taxed at 15-20%.
The IPO Lock-Up Scenario
A traditional IPO blocks selling for ~180 days. If the stock appreciated during that period, you’re already 6 months into the 12-month holding period when the lock-up expires. You’re only ~6 more months from the lower long-term capital gains rate.
Rushing to sell at lock-up expiration could mean paying 37% on a gain that would be taxed at 15-20% with a few more months of patience. If you don’t urgently need the cash and the position is manageable, factor this in.
If your company went public through a direct listing, there is typically no lock-up period. The 12-month holding period still applies from the date of vesting.
6. The 13 Most Common RSU Mistakes
Some are tax-related. Some are behavioral. Most are avoidable with planning. We see these again and again with the tech employees and founders we work with at WealthScript Advisors.
If your RSUs are under $1M for the year, your employer withholds at 22% flat, which is almost always less than your actual bracket. Set aside roughly 15% of each vesting amount as a buffer. A tax advisor can fine-tune the exact number.
Every share of the same stock has the same future potential. Selling losers generates a tax benefit; selling winners triggers a tax bill. If you’re going to sell, the tax math often favors selling the losers.
RSU payouts can represent over 50% of total comp over a career. What felt comfortable at 5% concentration can quietly become 40% without a deliberate decision. Check the ratio regularly.
If you work in tech and get paid in tech stock and buy more tech in your brokerage, your entire financial life is correlated to one sector. Diversify into other sectors and asset classes.
At vesting, you have zero capital gains or losses. You can immediately reinvest in a diversified portfolio. Many companies allow automatic sales. If selling is right for you, automate it.
ESPPs offer tax benefits for holding through a qualifying period. RSUs don’t. If you’re going to hold some employer stock, the ESPP shares are often the better ones to keep.
After a 180-day lock-up, you’re only ~6 months from long-term capital gains treatment. Rushing to sell could mean 35% vs. 15-20%. Consider the timeline.
RSU compensation is real pay. It carries dual risks: stock price decline and potential job loss. Every dollar of RSU value deserves the same planning as every dollar from your paycheck.
After you start working, equity value is driven by millions of market participants, not your performance. Don’t let a declining stock make you feel undervalued.
Waiting for the stock to “get back to $X” is usually anchoring bias. Sell decisions should be grounded in company fundamentals and your financial plan, not a remembered high-water mark.
Your insider perspective may not align with the market’s collective view. Be cautious about putting all resources behind a single thesis.
FOMO is powerful, but ask: are there better risk-adjusted opportunities? Do I have goals that require certainty? If yes, diversification is the rational path.
Research shows people overvalue what they own. Ask: if I didn’t own this stock, would I buy it today at this price? If not, continuing to hold it is doing the same thing passively.
7. Frequently Asked Questions About RSUs
What is an RSU (Restricted Stock Unit)?
An RSU is equity compensation in which your employer promises to issue shares on a set schedule, typically contingent on continued employment. You don’t own the shares until they vest.
When are RSUs taxed?
RSUs are taxed as ordinary income the moment they vest. The full fair market value is added to your W-2 regardless of whether you sell or hold.
Why do I owe additional taxes on my RSUs when I file my taxes?
Your employer withholds at a flat 22% federal supplemental rate, which is typically lower than the actual bracket for most tech employees. The difference becomes a tax bill.
Should I sell my RSUs immediately upon vesting?
For many tech employees, selling at vest and reinvesting in a diversified portfolio is a reasonable default. At vesting, there are no capital gains, so you avoid timing risk. However, the right answer depends on your goals, risk tolerance, and concentration level.
What happens to my RSUs if I leave my company?
Unvested RSUs are typically forfeited. Vested shares that have been delivered are yours to keep.
What is a double-trigger RSU?
Double-trigger RSUs require both continued employment and a liquidity event (IPO, acquisition, or tender offer) before the shares are released. Common at pre-IPO companies.
What is the difference between short-term and long-term capital gains on RSUs?
Sell within 12 months of vesting: gain taxed at ordinary income rate (32-37%). Hold more than 12 months: gain taxed at the lower long-term rate (15-20%).
What is the federal supplemental tax withholding rate?
22% on the first $1,000,000 of RSU income per year. Above $1M: 37%. FICA taxes (Social Security 6.2% + Medicare 1.45%) also apply.
How much company stock is too much?
Many planners evaluate concentration when employer stock exceeds 5-10% of total net worth, especially considering that salary and career are also tied to the same employer.
What is a lock-up period?
A 180-day window after a traditional IPO during which employees cannot sell. When it expires, you may be close to qualifying for long-term capital gains rates. Direct listings typically have no lock-up.
Need Help With Your RSU Strategy?
At WealthScript Advisors, we specialize in working with tech employees and founders navigating equity compensation, tax planning, and concentrated stock positions. Every situation is different, and we build plans tailored to yours.
wealthscriptadvisors.com
Disclaimer: This guide is for educational purposes only and does not constitute tax, legal, or investment advice. Consult with a qualified professional regarding your specific situation.
