Restricted Stock Units Explained: Vesting and Taxes (October 2026)

Restricted stock units explained in plain English: an RSU is a promise from your employer to hand you a set number of company shares, or the cash value of those shares, at a future date as long as you stay long enough or hit a performance target. You get the shares at no cost, but you owe ordinary income tax the day they vest, before you can sell anything. That two-part reality is what trips people up, so here is the full lifecycle.

I have walked a few dozen friends through their first vest, and the same three questions come up every time: when do I actually own something, what do I owe the IRS, and do I sell it right away or hold it. The mechanics answer all three. This guide is written for US employees, DIY investors, and anyone comparing an equity package against a cash salary.

Table of Contents

What Are Restricted Stock Units?

An RSU is a unit of company stock that has been promised to you but has not been delivered yet. One unit typically converts into one share of stock, so 1,000 RSUs become 1,000 shares once they vest. Until then you own a promise, not stock, and that distinction explains nearly every rule that follows.

Employers hand out RSUs because they hit two birds with one grant. You keep working through a vesting period, and your interests line up with shareholders because your pay rises and falls with the stock price. Most grants also carry a forfeiture condition: leave before vesting and the unvested units go back to the company.

How RSUs differ from the other equity awards

The four awards people mix up behave differently enough that confusing them leads to bad tax assumptions. Here is the short version.

Feature	RSU	Stock option	Restricted stock award	ESPP
Cost to you	Zero	Strike price, often zero	Zero	Purchase price, usually a discount
Tax trigger	Vesting date	Exercise date	Transfer date, unless a Section 83(b) election is filed	Purchase date
Value at vesting if the stock fell	Can be zero or negative	Worthless, no tax owed	Can be zero	Can be a loss
Income type at trigger	Ordinary	Ordinary on the spread	Ordinary	Ordinary
Do you need cash to participate	No	Sometimes	No	Yes
Dividends before vesting	Sometimes, as equivalents	No	Yes	Not applicable
Voting before delivery	No	No	Yes	No
Best for	Simplest equity comp	Upside leverage	Faster access	Small side purchase

Stock options give you the right to buy later at a set strike price. If the stock never rises above that price, you walk away and owe nothing. RSUs have no such floor. You owe tax on the value at vesting even if the shares are worth less by the time you try to sell them, which is the biggest behavioral difference between the two.

How Do RSUs Work From Grant to Payment?

Every RSU travels the same four stages, whether the company is public or private and whether the payout is shares or cash. Knowing the stage you are in tells you exactly what you owe and what you can do.

1. Grant

Your offer letter or equity award agreement sets the number of units, the vesting schedule, and any performance conditions. Some grants come with a grant date value, which matters for accounting but usually does not create a tax bill for you. New-hire grants often require you to sign an agreement within a set number of days, and missing that window can forfeit the award, so this is the stage where reading the paperwork actually pays off.

2. Vesting

Units convert into the right to receive shares once the conditions are met. Time-based vesting is the most common: stay employed and units vest on a schedule. Performance-based vesting adds a hurdle based on company or team targets, such as revenue, earnings, or a stock price target. Until the condition is satisfied, the units are worth exactly what the agreement says, which is usually nothing.

3. Settlement

The company delivers shares to your brokerage account or pays you cash equal to the value. This is also the date the tax bill is calculated, using the fair market value of the stock on the vesting date. Your W-2 shows the vesting income in the box for wages, not in the box for other income, and that single detail drives a lot of the confusion people have later.

4. Sale

Anything above the value at vesting is a capital gain when you sell, taxed at capital gains rates. Holding past one year gets you the lower long-term rate, though as we get to, single-stock concentration tends to push most people the other direction.

One wrinkle worth knowing early: some plans include dividend equivalent rights, which pay you a cash amount that tracks dividends on unvested units. And some awards are PSUs, where the final payout depends on hitting a performance goal, so the number you were granted is a target rather than a promise.

What Is the RSU Vesting Schedule?

A vesting schedule is the rule that decides when each unit becomes yours. Four types cover almost every grant you will see.

Schedule type	How it works	Typical use
Straight-line (graded)	An equal slice vests every period	Most common at large public companies
Cliff	Nothing vests until a set date, then a large chunk vests at once	Startups with small teams
Milestone or performance	Units vest when a company or individual target is met	Executives and sales teams
Double-trigger	Vesting needs both time and a termination event, usually only on a change of control	Retention for senior staff

Here is a straight-line example. You are granted 1,000 units with four-year straight-line vesting, so 250 units vest each year at the anniversary. Each 250-unit tranche has its own vest date, its own fair market value, and its own cost basis, which is why tracking RSUs across a few years takes some care.

Now the same 1,000 units with a one-year cliff: nothing vests at month 12 in a single 250-unit chunk if the cliff is 25 percent, or the full 1,000 if the cliff is the whole award. Cliff vesting concentrates risk. You either get the grant or you leave with nothing, so the job decision and the vesting schedule become the same decision.

Accelerated vesting is worth checking for too. Some plans speed up vesting on a change of control, and a single-trigger acceleration means a change of control alone can vest everything. If you are weighing an offer at a company that may be acquired, that clause is worth more than the salary line.

How Are RSUs Taxed?

There are two tax events, and most misunderstandings come from expecting only one. At vesting you owe ordinary income tax on the full fair market value, even though no cash changed hands. At sale you owe capital gains tax on anything above that value.

Tax event one: ordinary income at vesting

The taxable amount is the number of units that vested multiplied by the closing stock price on the vest date. If 250 units vest on a day the stock closes at 40 dollars, that is 10,000 dollars of ordinary income added to your W-2 wages, taxed at your marginal rate like any other paycheck.

The employer withholds as it pays, typically 22 percent for federal income tax on supplemental wage income, plus Social Security and Medicare where applicable and any state withholding your state requires. That 22 percent is a flat statutory rate, not your real tax rate, and that gap is the source of the surprise bill people talk about on personal finance forums.

Someone in a 32 percent federal bracket with 250 units vesting at a 40 dollar price has 10,000 dollars of income, loses about 2,200 to withholding, and still owes roughly 1,000 more at filing, plus state tax, interest, and possibly an underpayment penalty. Sell-to-cover does not solve this. It only sells enough shares to pay the withheld amount.

Tax event two: capital gains at sale

Your cost basis in an RSU is the fair market value on the vest date. Sell at 55 dollars and the 15 dollar gain is a capital gain. Hold more than a year and it is long-term; sell inside a year and your marginal ordinary rate applies on top of the gain, which is why many people hold past the one-year mark even when they would rather not.

Moment	What is taxed	Rate type
Grant	Nothing for the employee	Not applicable
Vesting or settlement	Full fair market value of vested units	Ordinary income, your marginal rate
Sale within one year	Gain above the vest-date value	Short-term capital gains, often your marginal rate
Sale after one year	Gain above the vest-date value	Long-term capital gains, lower rate

One reporting problem catches nearly everyone: the 1099-B from your brokerage shows cost basis as zero or missing on RSU shares, because the broker treats the vest date differently than your W-2 does. Tell the tax preparer to use the vest-date fair market value as basis. On software like TurboTax, the RSU vest income comes in through the W-2 and is reported on Form 1040 as wages, with the sale handled as a capital transaction.

What Happens When RSU Shares Vest?

On the vest date the company calculates the value, withholds tax, and delivers shares to your brokerage account within a couple of weeks. Most plans use sell-to-cover automatically: the company sells just enough shares to cover taxes and credits the rest to your account. You never see a bill, and you never hold a physical certificate.

If you want to keep the whole grant, many plans let you choose net share settlement, where a fixed number of shares is withheld instead of a percentage. It is worth asking your administrator whether that option exists at grant time, because it is annoying to change later.

Cash settlement is the third option and works differently. Instead of shares you get a cash payment equal to the value, which removes concentration risk entirely but also removes any upside if the stock keeps climbing. Cash-settled awards also do not show up as a share sale on your brokerage statement, so the tax is all ordinary income at vest.

Also expect a purchase of additional shares to cover the gap between withheld tax and actual tax owed. Some administrators automatically buy a small number of shares in the open market to top up withholding, which shows up as a small share purchase on your statement. It looks strange the first time you see it.

How Do You Value RSUs?

The valuation is straightforward: units times current share price. 1,000 unvested units on a company trading at 30 dollars per share have a paper value of 30,000 dollars. What that number does not tell you is when you will own them or whether you ever will.

Unvested units carry real uncertainty. The company can fail, the stock can drop, and leaving the job returns the units to the company. That is why most advisors treat unvested RSUs as a bonus target rather than part of your net worth, and count vested shares only.

Private companies are different again. There is no public share price, so units are usually valued using the most recent 409A valuation, often a low price set for tax reasons that bears no relation to what the company is really worth. If a startup offers you a buyback, tender offer, or an IPO, the eventual price may be many times the 409A number, and your tax bill will have been calculated on the 409A number. People get hit hard by this: a large tax owed on shares they cannot sell.

That is also why a Section 83(b) election matters, even though most people only hear about it for options. Filing a Section 83(b) election with the IRS within 30 days of the grant can lock in the low 409A value as your basis. Miss that window and the higher value at vest becomes your taxable income. Thirty days is not long, and this is one of the clearest cases where a tax professional earns their fee.

Can You Sell RSUs Immediately?

Usually yes for public company shares, but usually no on the vest date itself. Shares need a few days to settle into your brokerage account, and more importantly, insiders are limited by trading windows. Company policy opens a window a few weeks after earnings and closes it before the next report, so you may be unable to sell during a quiet stretch.

Blackout periods exist for a reason. If you trade on material inside information, that is insider trading, and the penalties are severe. Officers, directors, and designated employees also have to pre-clear any trade with the company’s legal team or an administrator before placing it.

Executives sidestep much of this with a Rule 10b5-1 plan, a pre-arranged trading plan set up with the broker that specifies dates, amounts, and prices in advance. Setting it up during an open window means the trades can execute automatically during blackout periods, which insulates you from the accusation of trading on a tip from your own company.

Private company employees face the hardest limits. There is no market to sell into, so most plans only allow sales during a tender offer or a liquidity event, sometimes with a holding period of several years. Read your plan document for the repurchase terms before you assume the value on your grant letter is cash you can count on.

What Should You Do With RSUs?

There is no right answer for everyone, but there is a framework. Start with concentration, because that is the risk most people underestimate.

Most financial advisors put a ceiling around 10 to 15 percent of net worth in one company’s stock, since your salary, your benefits, and now your equity all move with the same business. If RSUs push your holdings past that line, selling is a risk decision, not a market call. Forum regulars on personal finance and index-investing boards describe the same pattern: sell to cover taxes, then direct the rest into a broad index fund so the employee exposure does not compound.

Four approaches worth knowing

Sell everything at vest. The most common advice from advisors and the simplest to execute. You pay the tax, keep a small amount of company stock if you like, and move the rest. The cost is giving up upside and paying short-term capital gains if you are forced to sell inside the year.

Hold for the long-term rate. Vested shares held more than a year get the lower capital gains rate, so this is defensible when the company is doing well and your position stays small. The risk is a sharp drop right after you choose to hold, and a growing concentration problem every quarter.

Roll the sales. Sell a fixed slice each quarter or each year, for example a quarter of each new vest spread across four periods. You keep some exposure, reduce the tax rate on later tranches, and avoid one big market-timing decision. It takes a spreadsheet and some discipline.

Hold through career transitions. If you are about to change jobs anyway, selling now avoids two things: a new company restricting your sales during a blackout, and a grant that is vesting while you are in a new role. Leaving the company also kills your unvested units, which is worth pricing into any job change decision.

A worked example

You have 200 units vesting and the stock is at 50 dollars, so 10,000 dollars of ordinary income lands on your W-2. At a 32 percent federal rate plus a 5 percent state rate, your real tax bill is around 3,700 dollars. Withholding at 22 percent federal covers roughly 2,200, so you owe about 1,500 more that year plus state tax.

Two paths from there. Sell all 200 shares after settlement and bring in 10,000 gross, of which roughly 3,700 goes to tax and a few hundred to the state, leaving about 6,000 to move wherever you want. Or sell about 80 shares to cover the tax bill and keep 120 shares, a position worth 6,000 dollars at today’s price, and deal with the concentration question at the next vest.

Whichever path you pick, build a spreadsheet with one row per vest date: date, units, closing price, income reported, basis, and what you sold. Four columns and ten minutes per vest saves a very expensive conversation with a tax preparer later.

One more note on leaving. Unvested units are forfeited when you resign, and vested units stay yours, subject to the trading windows of your former employer. Some plans require you to exercise or sell within a short window after departure, sometimes 30 or 90 days, so check that before you resign rather than after.

Frequently Asked Questions

How are restricted stock units taxed?

RSUs create two tax events. At vesting, the fair market value of the units that vested is taxed as ordinary income at your marginal rate and reported on your W-2 as wages, with federal withholding typically taken at the 22 percent supplemental rate. When you later sell, anything above that vest-date value is a capital gain, short-term if you sell within a year and long-term after that. Your cost basis is the vest-date value, which brokers sometimes show incorrectly on a 1099-B.

Is 1 RSU equal to 1 stock?

Usually yes. One restricted stock unit converts into one share of the company stock at settlement, though some plans have an exchange ratio, so check your award agreement. Until the unit vests you do not own a share, you own a promise of one. That is why you have no voting rights and generally no dividends before vesting, and why the value can fall to nothing if the company does badly.

What are the disadvantages of RSUs?

The main drawbacks are tax timing, concentration, and a lack of control. You owe ordinary income tax at vest on value you never received as cash, and sell-to-cover withholds at a flat 22 percent, so higher earners often owe more at filing. Your salary and your equity ride on the same company, and unvested units vanish if you leave. Options avoid this by being worthless instead of taxable when the stock falls.

What happens to RSUs when you leave a company?

Unvested units are forfeited and return to the company, which is why staying through the vest date matters so much. Units that already vested stay yours, though your former employer still controls when you can trade them under its insider trading policy. Check your plan for a post-termination exercise or sale deadline, which is often 30 to 90 days, because missing it can end your ability to sell.

How does sell-to-cover work for RSUs?

Sell-to-cover is the automatic withholding at settlement. The company sells just enough shares to cover the taxes due on the vested value, usually at the 22 percent federal statutory rate plus applicable payroll and state taxes, and delivers the remaining shares to your brokerage account. Because 22 percent is a flat rate rather than your marginal rate, higher earners still owe a balance at tax time that an estimated payment usually handles better.

Can you lose money on RSUs?

Yes, and this is the biggest difference between RSUs and stock options. An option simply expires worthless if the stock falls below the strike price. With RSUs, if the stock is at 50 dollars when 250 units vest, you owe income tax on 12,500 dollars. If it drops to 20 dollars before you can sell, the shares are worth 5,000 and you are out the tax you already paid. Options cap that loss at zero.

What To Do First

Start with your award agreement, not with a strategy. Read the vesting schedule, the settlement method, the post-termination deadline, and whether accelerated vesting exists. Then look at your portfolio and decide whether your total exposure to one company is inside a range you are comfortable with.

Finally, talk to a tax professional in your first vesting year, especially if you are in a bracket above 22 percent or you hold units at a private company. The two tax events are mechanical and easy to get wrong on your own, and the 30-day Section 83(b) window does not wait for you to get around to it. Tax rules and rates vary by country and state, so treat this as a general explanation and check your own situation.