Can You Sell RSUs Immediately After Vesting? A Sell-to-Cover Guide for California and Washington Families

By Kevin Luu, Co-Founder and Chief Learning Officer. Reviewed on 2026-09-30.

Yes, you can sell RSUs immediately after they vest, as soon as the shares land in your brokerage account and your company’s trading window is open. You cannot sell RSUs before they vest, because until then they are only a promise to deliver shares, not shares you own. At a public company, selling on or near the vest date usually creates little or no extra tax, because the full value was already taxed as wages at vest.

For a California or Washington family with two incomes of $300,000 or more, the real questions are different: how much tax the automatic “sell to cover” leaves unpaid, whether to keep the shares that remain, and who in the household is making that call every quarter. This guide walks through each one, with a worked example at a $900,000 household income.

What you can and cannot sell, by type of award

If your shares are vested but you do not see them yet, see what to do when RSUs are vested but not released. For pre-IPO equity, see RSUs at private companies.

Why selling right after vest adds almost no tax

When RSUs vest and shares are delivered, the fair market value that day is wages. It appears on your W-2 and is subject to federal income tax, Social Security (up to the 2026 wage base of $184,500), Medicare at 1.45%, and the 0.9% Additional Medicare Tax once household wages pass $250,000 for joint filers in 2026. In California, it is also subject to state income tax and 1.3% SDI for 2026, with no wage cap.

That vest-day value becomes your cost basis. If you sell at the same price, there is no gain. If the price moves before you sell, the difference is a short-term capital gain or loss (held one year or less). In California, all capital gains are taxed as ordinary income, so holding past one year changes your federal rate but not your California rate.

One common filing problem: the Form 1099-B from your broker may show a cost basis of zero or leave it blank for RSU shares. If you report that number as is, you pay tax twice on the same income. The Form 8949 instructions explain how to correct an incorrect basis with an adjustment (code B). More in how to report RSUs on your tax return.

How sell to cover works, step by step

1. Vest date. Your employer values the shares at that day’s price (the exact pricing rule is in your plan document).
2. Withholding is calculated. Federal income tax is usually withheld at the 22% supplemental rate for 2026, and must be 37% on supplemental wages above $1,000,000 in the calendar year (IRS Publication 15). In California, many employers use the 10.23% rate the EDD lists for bonuses and stock options (EDD DE 44, 2026). Medicare and SDI are added, plus Social Security if you have not reached the wage base.
3. The plan administrator sells enough shares to cover that withholding, usually rounding up to whole shares. Any small excess is typically returned as cash.
4. The remaining shares are deposited in your brokerage account. From here, they are an investment you chose to keep, and you can sell them when your trading window allows.

Your plan may offer alternatives such as having the company withhold shares instead (withhold to cover) or selling everything at vest. The differences are covered in sell to cover vs same-day sale.

Worked example: a $900,000 household with a $200,000 vest in California

Assumptions (illustrative): married filing jointly, living in California. Spouse A earns a $300,000 salary plus one $200,000 RSU vest this year (1,000 shares at $200). Spouse B earns $400,000. Total W-2 wages are $900,000. Allowable itemized deductions are $40,000, so taxable income is about $860,000 for both federal and California purposes (a simplification: the two usually differ). By the vest date, Spouse A’s salary has already passed the Social Security wage base and the $200,000 point where the employer starts withholding Additional Medicare Tax.

What gets withheld at vest

At $200 a share, the plan sells 359 shares ($71,800). The family keeps 641 shares, worth $128,200.

What is actually owed on that $200,000

Without the vest, this family’s taxable income would be about $660,000. The vest stacks on top. Federally for 2026, the first $108,700 of it fills the rest of the 35% bracket (which ends at $768,700) and the remaining $91,300 is taxed at 37%. That is about $71,826 of federal income tax, against $44,000 withheld: a shortfall of roughly $27,800.

In California, using the 2025 brackets (2026 schedules were not yet published), $82,958 of the vest falls in the 9.3% bracket and $117,042 in the 10.3% bracket, about $19,770 of tax against $20,460 withheld. At this income, California withholding roughly matches. Federal withholding does not.

The higher the income, the wider the gap. At a household income of $2 million, the vest sits entirely in the 37% federal bracket and the 12.3% California bracket (2025 schedule) plus the 1% Behavioral Health Services Tax on taxable income over $1,000,000. Each $100,000 of vest then leaves about $15,000 federal and $3,070 California tax unwithheld.

The fix is planning, not a surprise in April: raise W-4 withholding on salary, or make estimated payments after each large vest. Federally for 2026, households whose 2025 AGI was over $150,000 generally avoid the underpayment penalty by paying in at least 110% of the 2025 tax or 90% of the 2026 tax (IRS Publication 505). California’s estimated tax rules differ for very high incomes, so check them separately with your preparer.

The same vest in Washington

Washington has no individual income tax on wages in 2026, so there is no state income tax or SDI withheld at vest. Most employees do pay the WA Cares Fund premium of 0.58% on all wages, with no cap, including the vest (WA Cares Fund). The federal shortfall above is the same. If the family later sells shares held more than a year at a gain, Washington’s capital gains tax may apply: 7% on long-term gains above the standard deduction ($278,000 for 2025, the latest published) and 9.9% on taxable gains above $1,000,000 (Washington DOR). Selling at vest avoids that question, because there is little or no gain. Note for planning: Washington enacted a 9.9% income tax on AGI over $1,000,000 starting January 1, 2028 (DOR), which will matter for high-earning RSU households.

The real decision: keep the remaining shares or sell them

Once the tax is handled, keeping the 641 shares is economically the same as receiving $128,200 in cash and using it to buy your employer’s stock. A simple test: if the company had paid you cash instead, would you buy this stock with it today?

Most families in this income range already depend on one or two employers for salary, future grants and often health coverage. Keeping every vest adds investment risk to the same place the paycheck comes from. Common ways families decide:

• Sell every vest at release. Simple, no tax gain to manage, and the cash goes to the goals already written down (529s, the house, taxable investments).
• Set a cap. For example, employer stock stays below a fixed share of the family’s investable assets, and any vest above the cap is sold.
• Hold for a defined reason. If you keep shares, write down why, the price or date at which you will revisit, and who decides.

For how this fits a full portfolio, see our investment risk management work, and for withholding and estimated payments, our tax management service.

Common mistakes with selling RSUs

• Treating 22% withholding as the tax. At the 35% and 37% brackets, it is not. Plan the difference before April.
• Reporting a zero basis. The vest value was already taxed on your W-2. Correct the basis on Form 8949.
• Holding just to reach long-term rates. In California, there is no lower state rate for long-term gains, and the stock can fall more than the federal rate difference saves.
• Forgetting the trading window. If the vest falls in a blackout period, you may not be able to sell until it opens. Employees in sensitive roles can ask about a pre-arranged trading plan.
• Filing an 83(b) for RSUs. It does not apply. 83(b) is for restricted stock and early-exercised options.

What to write down for your kids

A sell rule is one of the easiest money decisions to document, and one of the most useful for children to read later. One page is enough: what you do at each vest, why, the cap you set, and how you handled a year when the stock dropped or rose sharply. As Kevin puts it: “Your kids don’t need to inherit your portfolio. They need to inherit your decision-making process.”

Questions families ask about selling RSUs

Can I sell RSUs the day they vest?

Often yes, if the shares are released to your account that day and your trading window is open. In practice, many plans deliver shares one to several business days after the vest date, so the earliest sale is when the shares appear. The sell-to-cover shares are sold by the plan administrator automatically, usually around the vest date.

Can I sell RSUs before my company’s IPO?

Usually not. Most private-company RSUs are not delivered until a liquidity event, and after an IPO, employees are commonly subject to a lockup period set by the company and its underwriters. The main exception is a company-run tender offer, covered in how tender offers work.

Do I pay tax again when I sell vested RSU shares?

Only on the change in price after vest. The vest-day value was already taxed as wages and becomes your cost basis. If you sell for more, the difference is a capital gain; if you sell for less, it is a capital loss that can offset other gains. Make sure your return uses the correct basis rather than the zero some brokers report.

Next step

Before your next vest, look up three things: your plan’s withholding method, your expected federal bracket for 2026, and your next trading window. If the gap between withholding and the tax you actually owe is more than a few thousand dollars, set up the W-4 change or estimated payment now. If you want a second set of eyes on your equity, withholding and sell rule together, our Tax & Wealth Assessment covers it.

This is general education, not individual tax or investment advice. The right move depends on your family’s full picture.

Written by

Kevin Luu

Co-Founder and Chief Learning Officer, Bright Advisers

Kevin has advised high-income W-2 tech and biotech families since 2015, and leads the education-first Age Five Family Office from Brea, California.

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