Why Are My RSU Taxes So High When They Vest?
Last reviewed: July 2026
RSU taxes feel high because the IRS treats your vested shares as ordinary income the day they vest, taxed exactly like a cash bonus at your full marginal rate. A $200,000 vest does not get a discount because you received stock instead of cash. You owe federal income tax, state income tax, Social Security, and Medicare on the full vest value the moment it hits your account, which is why a six-figure vest can shrink by nearly half before it ever reaches your bank.
Key Takeaways
- RSUs are taxed as ordinary income at vest, not at sale, at your full marginal rate.
- The 2026 top federal bracket reaches 37% for high earners well above standard withholding.
- Employers default to 22% supplemental withholding, which underwithholds most tech earners by 10-plus points.
- Selling at vest removes concentration risk and locks in a known tax cost with no surprise gain.
- Mapping your full-year vesting schedule prevents the cumulative April shortfall that catches most people.
About the Author: Jeff Judge, CFP®, AEP®, ChFC®, CLU® is Managing Partner of Chesapeake Financial Planners in Forest Hill, Maryland. He has been helping families and business owners in Harford County and the Baltimore metro area navigate equity compensation and stock vesting taxes since earning his CFP® certification in 2013, by using Chesapeake Financial Planners’ signature process, the R.U.D.D.E.R. method™. Jeff has watched more tech clients get blindsided by the gap between what their employer withholds and what they actually owe than by almost any other single planning issue.
What Happens to RSU Taxes the Day Your Stock Vests?
The day your RSUs vest, the full market value is added to your W-2 as ordinary income. There is no special rate, no capital gains treatment, no deferral. The IRS counts it the same way it counts your salary and your year-end bonus.
Here is the math on a $200,000 vest for someone in a high bracket:
| Tax component | Amount | Basis |
|---|---|---|
| Federal income tax | ~$66,000 | 33% effective marginal blend |
| State income tax | ~$13,000 | 6.5% state rate |
| Social Security | up to $11,439 | 2026 wage base of $184,500 if not yet hit |
| Medicare | ~$2,900 | 1.45% plus 0.9% additional over $200K |
The reason this stings is timing. You receive stock, often inside a blackout window where you cannot sell, but the tax is due as if you got cash. Jeff Judge tells clients that the cruelest part of RSU taxes is owing real money on an asset you may not be allowed to touch yet. That mismatch is the whole problem in one sentence.
Why Does Sell-to-Cover Withholding Leave Me Owing More?
Most employers default to "sell to cover," selling just enough shares to cover the mandatory withholding, then handing you the rest. The trouble is the withholding rate. The IRS sets the federal supplemental wage rate at 22% for amounts under $1 million, and most equity platforms apply that flat 22% regardless of your real bracket.
If your base salary is $150,000 and you vest $200,000 in RSUs, your total income for the year is $350,000. That pushes a big chunk of your RSU income into the 32% and 35% federal brackets. Your employer withheld 22%. You owe far more. That 10-to-13-point gap is the surprise bill that lands in April.
The fix is simple but underused. Most platforms, including Fidelity and Schwab, let you raise your supplemental withholding election. If you sit in the 35% bracket, electing 38% to 40% covers federal, state, and the additional Medicare tax without leaving a shortfall. Yes, less stock hits your account. Writing a $30,000 check the following spring feels worse.
Which RSU Tax Strategies Actually Reduce the Pain?
The strategies that work are about controlling the cost, not eliminating it. There is no legal way to make vested ordinary income disappear, but you can avoid the surprises and the concentration risk.
The first move is matching your withholding to your real marginal rate, as described above. The second is deciding what to do with the shares once they vest. Most planners, including Jeff, lean toward selling at vest. When you sell immediately, your cost basis equals the vest-day value, so there is little to no capital gain, and you remove single-stock risk from your portfolio. If your employer already represents 30% to 40% of your net worth, holding more company stock concentrates the very risk you should be reducing.
A third strategy is sheltering income in the vest year. If your company offers after-tax 401(k) contributions with in-service conversions, a mega backdoor Roth can move meaningful dollars into tax-advantaged space the same year your income spikes. Deferred compensation plans can also smooth a heavy vesting year, though they carry their own creditor and timing risks and deserve a careful review. For asset placement decisions like these, see How Should I Place Investments Across Taxable and Retirement Accounts?.
The fourth strategy is planning around your full vesting schedule for the year rather than reacting one vest at a time. This connects directly to the next section.
How Do I Plan Around Multiple Vesting Dates in One Year?
Map every vesting date for the calendar year and total the expected income before the first vest arrives. RSU grants typically vest quarterly or annually, and the tax bill is cumulative across all of them. If you expect to vest $300,000 across the year, you should plan to set aside roughly $135,000 for taxes, not treat each early vest as spending money.
This is where most people stumble. They feel flush after the first vest, spend it, and forget the tax liability builds with every subsequent vest. Jeff Judge often uses the R.U.D.D.E.R. Method™, Chesapeake Financial Planners' six-step planning process of Review and Recognize, Uncover and Understand, Design and Develop, Discuss and Decide, Execute and Empower, and Reassess and Refine, to map equity income against the full tax picture before a single share vests. Knowing the marginal-versus-effective gap matters here too; see What Is the Difference Between Marginal and Effective Tax Rate?.
If you hold shares after vest and the stock drops, you can harvest the capital loss to offset other gains, but that requires tracking your cost basis and watching wash-sale rules. Many people skip the tracking, which is one more reason selling at vest tends to be the cleaner path. For a deeper walk-through of avoiding surprise bills, the dedicated RSU planning guide covers the full process.
Frequently Asked Questions
Are RSUs taxed when they vest or when I sell them?
RSUs are taxed as ordinary income on the vesting date, based on the full market value of the shares that day. You owe income tax, Social Security, and Medicare immediately, even if you do not sell. If you later sell at a higher price, only the gain above the vest-day value is taxed again, as a capital gain.
Why did my employer only withhold 22% on my RSUs?
The IRS sets the federal supplemental wage withholding rate at 22% for amounts under $1 million, and most equity platforms apply that flat rate by default. If your total income places you in the 32% or 35% federal bracket, 22% underwithholds you by 10 or more percentage points, creating a shortfall you must pay when you file.
Should I sell my RSUs immediately when they vest?
Selling at vest is the default recommendation for most people because your cost basis equals the vest-day value, so there is little or no additional capital gain. Selling immediately also removes single-stock concentration risk, which matters if your employer already makes up a large share of your net worth. Holding only makes sense with a clear, deliberate reason.
How much should I set aside for RSU taxes?
Set aside enough to cover the gap between your employer's 22% withholding and your actual marginal rate, plus state tax and the additional Medicare tax. For high earners in the 35% bracket, planning for total withholding near 38% to 40% of vest value is a safe target. Map every vesting date in the year, since the liability is cumulative.
Can I reduce the taxes I owe on vested RSUs?
You cannot erase the ordinary income from vesting, but you can manage it. Increasing your withholding prevents an underpayment penalty, and contributing to a mega backdoor Roth or deferred compensation plan in the vest year can shelter other income. Tax-loss harvesting on shares you hold post-vest can offset gains elsewhere if the stock declines.
If you want a clearer picture of what your next vest will actually cost you, our free RSU tax planning guide walks through the full calculation step by step. Download it at chesapeakefp.com and run your numbers before your next vesting date arrives.
Disclosures
The information provided is for educational purposes only and should not be construed as investment advice. Investment strategies should be tailored to individual circumstances, risk tolerance, and goals. Past performance doesn't guarantee future results. Consult with qualified financial professionals regarding your specific situation.
Advisors associated with Chesapeake Financial Planners may be either (1) LPL Financial Registered Representatives offering securities through LPL Financial, Member FINRA and SIPC, and investment advisor representatives offering investment advice through Great Valley Advisor Group; or (2) solely investment advisor representatives offering investment advice through Great Valley Advisor Group and not affiliated with LPL Financial. Great Valley Advisor Group, and Chesapeake Financial Planners are separate entities from LPL Financial.
