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EQUITY COMPENSATION

Restricted Stock Units (RSUs): How They’re Taxed

Restricted stock units are the most common form of equity compensation at public companies, and the rules around them are simpler than options but trip up almost everyone at sale time. The short version: RSUs are taxed as ordinary wages when they vest, the value lands on your W-2, and then a broker reporting glitch causes a lot of people to pay tax on the same money twice. We see this every filing season. If RSUs are part of your pay and you want the return done right, our individual tax return preparation handles the W-2 wage piece and the capital gain piece so they line up the way the IRS expects.

What Restricted Stock Units (RSUs) Actually Are

An RSU is a promise from your employer to deliver shares of company stock to you at a future date, once you have met a vesting condition. That condition is usually time, often a four-year schedule with a one-year cliff, sometimes a performance target. At grant you receive no shares and no value. You hold a contractual right, nothing more. IRS Publication 5992, the IRS audit guide for equity-based compensation, treats the unit as exactly that, a promise with no current transfer of property.

This is the single fact that drives every other rule about RSUs. Because no property changes hands at grant, there is nothing to tax up front, nothing to elect on, and nothing to start a holding period. Everything that matters happens at vesting, when the company finally delivers the shares.

Compare that to a restricted stock award, where the company hands you actual shares on day one that are subject to forfeiture if you leave. That distinction looks small and changes the entire tax picture, which is why we wrote a separate restricted stock awards guide covering how an RSA is taxed.

Why RSUs cannot make an 83(b) election

People who have read about startup equity often ask whether they can file an 83(b) election on their RSUs to lock in a low tax cost early. The answer is no, and the reason is clean. An 83(b) election under the tax code lets you choose to be taxed when property is transferred to you instead of later when it vests. The whole mechanism depends on property being transferred. With an RSU, no property is transferred at grant. You hold a promise. There is nothing to make an election on.

IRS Publication 5992 says this directly: an 83(b) election cannot be made for an RSU. So if a colleague tells you they filed one on their units, they either had restricted stock awards and misnamed them, or they made a filing that does nothing. The 30-day clock and the election form simply do not apply here.

Restricted stock awards are the opposite. Because an RSA delivers real shares at grant, those shares are property under Section 83, and the holder can elect to be taxed at grant within 30 days. If you want the full mechanics of that election, the deadline, and when paying tax early actually pays off, read our 83(b) election guide and the RSA tax guide. The contrast between the two is the cleanest way to understand why RSUs are stuck waiting until vesting.

How RSU tax works at vesting

When your restricted stock units vest, the company delivers the shares and the full fair market value of those shares on the vest date becomes ordinary compensation. It is wages, plain and simple. Per IRS Publication 525, that vest-date value is taxable income the moment the shares are no longer subject to a substantial risk of forfeiture, which for most RSUs is the vest date.

That income runs through your Form W-2 exactly like salary. It hits Box 1 as wages, Boxes 3 and 5 for Social Security and Medicare wages, and the withholding boxes 2, 4, and 6 capture the tax your employer holds back. RSU vesting is a payroll event, not an investment event, and your employer is required to withhold on it.

Here is where the cash mechanics get interesting. You owe tax on the full vest value, but you did not receive any cash, only shares. So companies use share withholding, also called sell-to-cover. The employer automatically sells or holds back a portion of the vesting shares to cover the tax bill, and you keep the rest. If 500 shares vest and roughly 150 are taken to cover withholding, you end up with about 350 shares in your account. The full 500-share value still shows on your W-2; the 150 shares were sold to pay the tax that vesting created.

Cost basis and holding period after vesting

Once your RSUs vest and the value is taxed as wages, those shares get a cost basis equal to the fair market value on the vest date. This is the part to commit to memory, because it is the exact number brokers tend to get wrong. You already paid ordinary income tax on the vest-date value, so that value is your basis. Taxing it again would be double taxation.

The holding period starts the day after the vest date. From that point forward the shares behave like any other stock you own. Sell within a year of vesting and any gain is short-term, taxed at ordinary rates. Hold more than a year and the gain qualifies for long-term capital gain rates under IRS Topic 409. Any later sale is a capital transaction reported on Form 8949, with the totals flowing to Schedule D. Gain or loss is the sale price minus your vest-date basis. Nothing exotic, as long as the basis is right.

The RSU double-tax trap on Form 1099-B

This is the mistake that costs RSU holders real money, and it is built into how brokers report. When you sell RSU shares, the broker sends you and the IRS a Form 1099-B. The problem is that the broker often reports a cost basis of zero, or only the small amount of cash you paid, instead of the full vest-date value. Because brokers are not always told what was already taxed as wages, they default to a basis that is too low.

If you enter that 1099-B as-is, your return treats the entire sale proceeds as gain, taxing money you already paid wage tax on at vesting. That is the double tax. On a sizable RSU position it can mean thousands of dollars of phantom gain.

The fix lives on Form 8949. You report the sale, enter the broker’s reported basis in column (e), enter code B in column (f) to flag a basis correction, and put the adjustment in column (g) so your corrected basis equals the fair market value at vest. After the adjustment, the gain is measured against the right number and you are taxed only on the appreciation that happened after vesting. The wage portion is not taxed twice. Every RSU return we prepare runs through this check, because the 1099-B almost never has it right on its own.

A worked RSU example with real dollars

Run the numbers. You have 500 RSUs that vest when the stock trades at 40 dollars a share. The full vest value is 20,000 dollars, and that 20,000 dollars shows up as ordinary wages on your Form W-2 for the year, with Social Security, Medicare, and income tax withheld. Your cost basis in the shares is 40 dollars each.

Suppose 150 of those shares are sold to cover the withholding right at vesting. Because they sold at 40 dollars, the same price that set your basis, there is almost no gain on that sell-to-cover transaction. It nets to roughly zero, give or take a few cents of price movement.

Now you hold the remaining 350 shares for more than a year and sell when the stock has climbed to 55 dollars. Your gain is 15 dollars a share, the 55 dollar sale price minus your 40 dollar basis. Across 350 shares that is 5,250 dollars of long-term capital gain, taxed at the favorable rates in IRS Topic 409. Here is the trap in action: your broker’s Form 1099-B might show a basis of zero, reporting a gain of 19,250 dollars instead of 5,250 dollars, an overstatement of roughly 14,000 dollars. Without the column (g) fix on Form 8949 you would pay tax on that whole inflated figure. One more wrinkle for higher earners: if your modified adjusted gross income clears 200,000 dollars single or 250,000 dollars married filing jointly, the 5,250 dollar gain also carries the 3.8 percent Net Investment Income Tax, computed on Form 8960. That is about 200 dollars more, and it applies to the real gain, not the phantom one.

Frequently Asked Questions

When are restricted stock units actually taxed?

Income arises at vesting, measured by the fair market value of the shares delivered to you on that date. Nothing happens at grant. A unit is an unfunded promise to deliver stock later, so on the day the grant letter is signed you own no property and report no income. That changes the moment the vesting condition is met and shares are settled into your account. The full value on that date becomes ordinary compensation income, joins your wages in box 1 of Form W-2, and carries Social Security and Medicare tax like any other paycheck.

The price you paid is zero, which is why the entire value is taxed rather than a spread. That single feature separates restricted stock units from options. An option only produces income to the extent the stock rose above your exercise price, and it produces nothing at all if the stock falls. Units always produce income when they vest, even in a bad year, because there is no strike price to be underwater against. A grant that has lost 60 percent of its value still delivers taxable wages equal to whatever the shares are worth on the vest date.

Vesting schedules drive the timing. A common public company grant vests 25 percent after one year and then quarterly, which produces a taxable event every three months once the cliff passes. Private companies frequently use a double-trigger design, where shares are released only after both a service period and a liquidity event such as an initial public offering or an acquisition. That structure protects employees from owing tax on shares they cannot sell, but it also concentrates several years of income into one calendar year when the second trigger finally happens.

Here is a plain example. An employee holds 1,500 restricted stock units that vest on March 15 when the shares trade at 84 dollars. She reports 126,000 dollars of ordinary compensation income for that year, whether or not she sells a single share. Her employer withholds tax by holding back a block of the shares, so perhaps 480 shares are retained for taxes and 1,020 shares are delivered. She now owns 1,020 shares with a basis of 84 dollars each, and any change in price after March 15 is capital gain or loss rather than compensation.

One detail on the pay statement confuses almost everyone. A vest appears as a large gross wage figure with an offsetting deduction for the shares retained, so the net pay line can read zero even though six figures of income were just reported. No cash reached you, and the wage income is still fully taxable. Payroll tax applies at vest as well, which is why a large vest in the middle of the year can finish your Social Security wage base and quietly change the take-home on every paycheck that follows.

Dividend equivalents deserve a mention because they surprise people. Payments made on unvested units are usually treated as additional compensation rather than dividend income, so they show up as wages instead of on Form 1099-DIV and do not receive qualified dividend rates. Once shares are delivered and you own them outright, later dividends are real dividends and are reported the normal way, with the rules explained in Publication 550.

The mistake we see most often is treating a vest as a non-event because no cash moved. Employees look at a brokerage account holding shares, see no deposit, and assume nothing is owed. The wage income was real, the withholding was partial, and the difference lands on the return. Anyone with restricted stock units vesting on a quarterly schedule should look at the running total by midyear rather than in January. Our tax strategy consulting team maps the vest calendar against expected income, and the results carry to the individual tax return we prepare. Federal rules govern this framework and state treatment varies, so check the sourcing rules if you moved during a vesting period. Track each vest as it happens and the year holds together.

Why does withholding on restricted stock units fall short for high earners?

Because the withholding rate is set by statute rather than by your bracket. Compensation from a vest is a supplemental wage, and employers withhold federal income tax on supplemental wages at a flat 22 percent for the first 1,000,000 dollars in a calendar year, then at 37 percent above that. Payroll is not doing anything wrong. It is following the rule. But a household in the 35 percent bracket is short by 13 points on every dollar of vest value, and a household in the top bracket is short by 15 points until the 1,000,000 dollars line is crossed. The framework for correcting this appears in Publication 505.

The shortfall compounds because equity income rarely arrives alone. A year with a large vest is often a year with a bonus, and the combined total pushes wages into higher brackets. Medicare tax has no wage ceiling, and the Additional Medicare Tax of 0.9 percent applies above the filing threshold, though an employer only begins withholding it once your wages with that employer pass 200,000 dollars. Two-earner households routinely cross the joint threshold while neither employer withholds anything extra at all.

Run the numbers on a real year. A product lead vests 400,000 dollars of restricted stock units across four quarterly dates. Payroll withholds 88,000 dollars at the flat 22 percent rate. Her marginal federal rate on that income is 37 percent, so the true federal cost is 148,000 dollars and the gap is 60,000 dollars before state tax and before the Net Investment Income Tax that may apply to other income on Form 8960. Nothing in her pay statements flags this. Each quarter looks like a normal withholding line.

State withholding follows its own flat rules and is rarely closer to your real rate than the federal figure. Several states apply a fixed supplemental percentage that sits well below their top bracket, and a few take nothing at all on equity income. If you worked in one state while the units were being earned and live in another when they vest, both states can look at the same income, one taxing on residency and the other on where the services were performed. A credit for taxes paid to another state usually prevents actual double taxation, but only when both returns are filed correctly and in the right sequence.

There are two ways to close the federal gap, and they behave differently. Additional withholding from salary, requested on Form W-4, is treated as paid ratably across the whole year regardless of when it was actually taken, which means a fourth-quarter adjustment can repair an underpayment from February. A quarterly estimated payment on Form 1040-ES, submitted through IRS Direct Pay, is credited only to the period in which you paid it. For 2026 the due dates are April 15, June 15, September 15, and January 15 of 2027.

Target a safe harbor instead of chasing an exact figure. Paying 90 percent of the current year tax or 100 percent of the prior year tax generally removes the underpayment penalty computed on Form 2210, and the prior-year test becomes 110 percent when prior-year adjusted gross income exceeded 150,000 dollars. Using the prior-year harbor is usually simpler with equity income, since the current-year number moves with every price change and cannot be pinned down until December.

The common mistake is reading the shares withheld at vest as a completed tax payment. Those shares funded a flat deposit at 22 percent, nothing more. A second and quieter version happens when someone increases withholding correctly in year one, gets a refund, then drops it back to nothing in year two while the vests keep coming. Set the projection each summer against the vest calendar rather than reacting to last year’s result. Our tax strategy consulting team runs that check for clients with recurring vests, and the payments are reconciled on the individual tax return. Fix the rate mid-year and April becomes a filing task rather than a funding problem.

How does sell-to-cover work, and what is my basis in restricted stock units?

Most employers settle a vest net of tax. Under net share settlement the company simply keeps enough shares to fund the withholding and delivers the rest, so no trade occurs in your account. Under a sell-to-cover arrangement the plan broker sells a portion of the vested shares on the open market the same day and remits the proceeds to payroll. The economic result is nearly identical. In both cases you receive fewer shares than the grant showed, and the shares that disappeared paid a flat 22 percent federal deposit plus payroll tax and any state amount.

Your basis in the shares you keep equals the fair market value used to compute the wage income at vest, and your holding period begins the day after the shares are delivered. The rule follows from Publication 551. Because you were already taxed on the full vest-date value as wages, that value is your investment in the shares. Anything the stock does afterward is capital gain or loss reported on Form 8949 and totaled onto Schedule D.

Now the reporting error that costs the most money in this area. Brokers frequently report a cost basis of zero for shares that came from a vest, because the employee paid nothing for them. Tax software imports that zero without complaint, and the return then shows a capital gain equal to the entire sale price, taxing the same value a second time after it already passed through your W-2 as wages. Nothing in the process flags the duplication, and returns prepared this way are accepted and processed normally.

Put real numbers against it. An employee vests 1,000 restricted stock units when the shares are worth 60 dollars, so 60,000 dollars of wage income is reported. The company withholds 340 shares and delivers 660, which carry a basis of 39,600 dollars. Eighteen months later she sells all 660 shares at 72 dollars for proceeds of 47,520 dollars, and her correct long-term capital gain is 7,920 dollars, costing about 1,188 dollars of federal tax at the 15 percent rate. If the broker basis of zero flows through untouched, the return reports a 47,520 dollars gain and roughly 7,128 dollars of tax. She would overpay by about 5,940 dollars on one small sale.

A timing detail shows up on same-day sales. The wage income uses the vest-date value, while the trade executes at whatever the market does that morning, so a same-day sale usually produces a small short-term gain or loss rather than exactly zero. Report it anyway using the correct basis. Skipping a 90 dollars loss changes almost nothing by itself, but the habit of ignoring the basis adjustment is what grows into a five figure error on a larger sale two years later.

The correction is an adjustment on Form 8949 that reports the proceeds as the broker did, substitutes the true basis, and shows the difference with the appropriate code. Keep the vest confirmation showing the share count and the price used, since that document supports the number. A prior year already filed with a zero basis can generally be corrected on Form 1040-X within the refund statute, which usually runs three years from the original filing.

Two more points matter for anyone selling regularly. Shares from different vest dates are separate lots with separate basis figures, so tell the broker which lot to sell before the trade settles rather than after. And a sale at a loss within 30 days of another vest can trigger the wash sale rule, deferring that loss into the basis of the newly delivered shares, which catches people on quarterly schedules. Our individual tax return team reconciles every equity sale to the W-2 pickup, and bookkeeping keeps the lot history that makes a sale years later provable. Save each vest confirmation on the day it arrives and the basis question never becomes a research project.

Can I make a section 83(b) election on restricted stock units?

No. The election is not available on units, and the reason is structural rather than a matter of paperwork. A section 83(b) statement applies to property transferred in connection with services while it is still subject to a substantial risk of forfeiture. A unit is not property. It is a contractual promise to deliver shares in the future, so there is nothing to elect on and nothing to be taxed early. Employees frequently ask about this after reading advice written for founders, and the advice does not transfer.

The contrast with a restricted stock award is worth understanding, because the two are easy to confuse. A restricted stock award transfers actual shares to you on the grant date, subject to forfeiture until it vests. Real property changes hands, so the recipient may file a section 83(b) statement with the service within 30 days of the transfer and be taxed on the grant-date value instead of the vest-date value. A founder receiving 100,000 shares at a formal value of one cent reports 1,000 dollars of income by making that election, and every dollar of later appreciation becomes capital gain. Without the election, the same shares vesting years later at 12 dollars would produce 1,200,000 dollars of ordinary wage income.

That 30 day deadline is absolute, it is measured from the transfer date rather than from any vesting date, and the service does not grant extensions for it. The election also carries real risk, because tax paid on shares that are later forfeited generally cannot be recovered. It is a reasonable choice at a very low valuation and a poor one once the shares carry meaningful value, which is exactly why the strategy belongs to early-stage awards rather than to units granted at a mature company.

What restricted stock units offer instead is a different kind of flexibility, and it is limited. Some plans allow a deferral of share delivery beyond the vesting date, but any such feature has to satisfy the deferred compensation rules of section 409A, with the election made well before the year of vesting. Failing those rules triggers immediate income plus a 20 percent additional tax, so deferral features are usually available only to senior employees under a formal plan. Most workers have no deferral option at all, which means the vest date is the tax date and no election changes it.

Private company employees have one more wrinkle. Double-trigger units do not become taxable until both the service condition and the liquidity condition are satisfied, so a departure before an initial public offering can mean years of vested units that simply expire without ever producing income or shares. Read the plan document for the post-termination treatment of vested units, because the answer varies from company to company and it is rarely favorable.

The common mistake is filing a section 83(b) statement for units anyway, on the advice of a colleague or an article aimed at founders. The filing does nothing, the tax result is unchanged, and it can create confusion at audit about what was actually granted. The right move is to confirm which instrument you hold before doing anything, since a grant letter naming units and one naming an award of restricted stock lead to completely different answers. We read those documents for clients as part of tax strategy consulting and carry the treatment through to the individual tax return, with the underlying wage reporting rules described in Form W-2 guidance, the basis rules in Publication 551, and general individual filing rules in Publication 17. Check the instrument first and the rest of the plan follows.

Does The Reed Corporation decide whether I sell my restricted stock units at vest?

No. The Reed Corporation is a certified public accounting and tax firm. We are not a registered investment adviser, we do not manage portfolios, we do not sell securities, and we do not tell a client whether to hold or sell shares delivered at a vest. That decision belongs to you and to a licensed investment professional. What we provide is the tax measurement of each path, which is a separate discipline and one that determines how much cash you actually keep from a given decision.

Our work on an equity year has a clear shape. We test whether the flat supplemental withholding covers your real marginal rate. We track basis by vest lot so no value is taxed twice, and we compute the capital gain correctly on Form 8949 when shares are sold. We size quarterly payments on Form 1040-ES and check the safe harbor on Form 2210. Where a large sale year pushes investment income above the threshold, we handle the additional 3.8 percent computation on Form 8960.

Coordination fills out the rest. Your investment advisor decides allocation and how much employer stock belongs in your plan. Your attorney handles the plan agreement and any estate work tied to a large position. We give both of them after-tax figures and take back whatever limits they set. Clients often raise the fact that a single employer stock has become most of their savings, which is a fair concern and a real conversation, but it is a conversation for the advisor. We answer the tax question next to it, such as what a sale of a particular lot would cost this year compared with next year.

Here is where the tax analysis is genuinely useful. Suppose 2,000 shares vest at 55 dollars, producing 110,000 dollars of wage income. Selling immediately at 55 dollars creates almost no capital gain, since basis already equals that value, so the only tax is the wage tax you owe regardless. Holding for 14 months and selling at 70 dollars adds 30,000 dollars of long-term capital gain taxed near 15 percent, or about 4,500 dollars. Holding and selling at 40 dollars instead produces a 30,000 dollars capital loss, deductible against capital gains without limit but against ordinary income at only 3,000 dollars per year. Notice that the wage tax on 110,000 dollars is owed in every version of this story.

That last point is the mistake we see most. People hold shares after a vest hoping to recover a price decline, without realizing the tax on the vest was locked in the day the shares were delivered and does not fall with the stock. Holding is an investment decision about a position you now own outright, not a way to reduce a tax that has already accrued. A related error is selling in a panic during a blackout window and creating a compliance problem with the employer that no tax planning can repair.

We give no guarantee of a tax outcome, no return is beyond an audit, and every projection depends on facts that can change before the next vest date. Clients who want the year modeled before the next tranche lands can request a consultation with our tax strategy team, and the reporting flows into the individual tax return we prepare each spring. The framework above is federal, and state treatment varies enough that a relocation during a vesting period needs its own review. Build the model before the vest rather than after the sale, and the choices in front of you get much easier to compare.

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