How RSUs Work (and What They Mean for Your Taxes)

Key Takeaways: 

• An RSU award is only the starting point. The value you see today may depend on vesting requirements, company rules, trading restrictions, and whether the shares can actually be sold when they become yours.
• Vesting is usually the main tax event. When RSUs vest, the value of the shares is generally treated as wage income, even if you keep the shares instead of selling them.
• RSUs should fit into your broader financial plan. A thoughtful strategy can help you decide when to sell, how much company stock to hold, how much cash to reserve for taxes, and how each vesting event supports your goals.

How RSUs Work at a High Level

RSUs are a promise from your employer to deliver company shares in the future if you meet the terms of the plan. They are a form of equity compensation, which means part of your pay is tied to the value of your employer’s stock, but the shares usually arrive in stages rather than all at once. To understand how RSUs work, start with the main moving parts:

Grant date: The grant date is when your employer awards the units. You may see a projected value, but you usually do not own the actual shares, have voting rights, or owe tax at this stage.

Vesting requirements: These are the conditions you must satisfy before the units become yours. Vesting may depend on continued employment, performance goals, company milestones, or a combination of requirements.

Unvested RSUs: Unvested RSUs are generally a future right to receive shares. They may have meaningful potential value, but they remain subject to the plan’s rules until vesting occurs.

Vested RSUs: Once RSUs vest, the units generally convert into vested shares. Your employer typically delivers shares of company stock, subject to payroll withholding, trading windows, and any other restrictions.

Forfeiture: If you leave before a vesting date, unvested units are usually lost unless your plan, employment agreement, severance terms, or retirement provisions say otherwise.

Net shares received: You may receive fewer RSU shares than the number that vested. This often happens when shares are withheld or sold to satisfy required tax withholding.

Please Note: RSU rules can vary by company. Private companies or startups may have different share delivery, valuation, liquidity, and settlement terms than public companies. Private company RSUs may also be harder to sell after vesting, while public company RSUs are often easier to value once trading restrictions are satisfied.

Why Vesting Is Usually the Main Tax Event

Vesting matters because it is usually the point when the award changes from a conditional right into compensation you have earned. Before that point, the units may show value on paper, but they are still tied to conditions you must meet.

When the shares vest, the fair market value is generally treated as wage income. That value is usually taxed as ordinary income rather than as an investment gain at that moment.

This timing can surprise employees who expected the tax to wait until a sale. Holding the shares after vesting may delay any capital gain or loss calculation, but it usually does not delay the wage income created when the shares become yours.

How Taxes Are Handled When RSUs Vest

When RSUs vest, your employer usually withholds taxes through payroll. That RSU withholding is a prepayment, not a final measurement of your full-year tax liability.

RSU income is usually reported on your W-2 as supplemental income and included in taxable wages. Presently, the optional flat federal withholding rate for supplemental wages is 22% up to $1 million, with 37% generally applying above that threshold.¹

RSU income may also be subject to payroll taxes, including Social Security and Medicare taxes, depending on your total wages. State taxes may also apply, which can matter if you worked in more than one state or relocated during the year.

The withholding may be handled through share withholding, a sell-to-cover transaction, or another method allowed by the plan. That is why units can vest without producing much cash and why the number of shares delivered may be lower than the headline vesting amount.

What Changes After the Shares Are Yours

After shares are delivered, the RSU process has mostly done its job. You now own company stock, and the next decision is whether that position belongs in your portfolio. 

That shift matters. The value at vesting has already been treated as wages, while any future change in share price belongs to the investment side of the equation.

Your Basis and Future Tax Result

Your cost basis is generally the value already included in W-2 income at vesting. This becomes the starting point for measuring any future gains or losses when you sell.

If you sell shortly after vesting, the sale price may be close to the vesting value. In that case, there may be little additional taxable gain or loss beyond the wage income already reported.

If you hold the shares and they rise, the increase after vesting may be taxed as capital gains when sold. A sale after holding the shares for one year or less generally produces a short-term result, while a sale after more than one year generally produces a long-term result.

Please Note: Federally, short-term gains are generally taxed at ordinary income tax rates (10% – 37%). Long-term capital gains tax rates are generally 0%, 15%, or 20%, depending on taxable income, and high earners may also need to consider the net investment income tax (NIIT).²

Why the Tax Forms Can Look Confusing

RSUs should not be taxed twice on the same value, but the reporting can make it feel that way. Your W-2 may include the vesting value as wages, while your brokerage Form 1099-B may report a sale if shares were sold for withholding or sold later.

The issue is often cost basis reporting. If the brokerage statement does not fully reflect the value already included in your W-2, the sale may appear to create a larger gain than it really did.

This is where RSU tax implications and broader tax implications overlap. You are checking more than whether income was reported. You are also matching the sale proceeds, adjusted basis, withholding, and wage reporting, so the return reflects the full picture.

What to Review Before Filing Your Tax Return

Given that RSU activity can appear in more than one place, before filing, check whether your payroll records, brokerage reporting, and vesting documents align. This process helps make sure all information tells the same story.

Review these items before your return is finalized:

• Confirm that vested RSU income appears in W-2 wages.
• Review federal, state, Social Security, and Medicare withholding tied to RSU income.
• Check brokerage reporting for shares sold at vesting or later in the year.
• Compare the reported basis with the value already included as W-2 income.
• Match sell-to-cover transactions against shares withheld for taxes.
• Keep vesting statements and trade confirmations in case the numbers need to be reconciled.

How RSUs Fit Into Your Broader Financial Plan

Once you understand the vesting, withholding, basis, and reporting, the next step is deciding how RSUs fit into the rest of your financial planning. That means moving beyond just tax planning and deciding what role these shares should play in your cash flow, portfolio, and long-term financial goals.

For some employees, selling shares after vesting can create liquidity for upcoming goals, such as a home purchase, college funding, retirement savings, or estimated tax payments. For others, holding some shares may make sense, but only if the added company stock exposure fits with the rest of their investments.

The bigger risk is letting RSUs accumulate without a plan. Your salary, bonus, career path, and equity may already depend heavily on the same company, so holding every vested share can quietly increase concentration risk over time.

Thoughtful RSU strategies give you a process before each vesting date arrives. That process may include setting target sell rules, reserving cash for taxes, reviewing trading windows, and deciding how much company stock you are comfortable owning after each vesting event.

How RSUs Work and Their Impact on Taxes FAQs

1. How Do RSUs Work?

RSUs are employer awards that can turn into shares after vesting requirements are met. You usually receive the award first, wait for the units to vest, then receive shares subject to plan rules, payroll withholding, and any trading restrictions.

2. How Are RSUs Taxed When They Vest?

When RSUs vest, the fair market value of the shares is generally treated as ordinary wage income. That value is usually included in your W-2, and your employer typically withholds federal, state, Social Security, and Medicare taxes as applicable.

3. Do I Owe Taxes If I Do Not Sell My RSU Shares?

Yes, you can owe taxes at vesting even if you keep the shares. The later decision to hold or sell affects any gain or loss after vesting, but it does not usually erase the wage income created when the shares became yours.

4. Can RSUs Be Taxed Twice?

RSUs should not be taxed twice on the same value. Confusion often happens when the W-2 reports wage income and the brokerage statement reports a sale, especially if the cost basis on the brokerage form needs to be reviewed or adjusted.

5. Should I Sell RSU Shares After They Vest?

It depends on your cash needs, tax picture, employer stock exposure, trading windows, and broader investment plan. A good starting point is asking whether you would choose to buy the same amount of company stock today with cash.

How Our Team Can Help You Make Sense of Your RSUs

RSUs are easier to manage when you understand what you have been granted, when the units vest, how shares are delivered, how taxes are handled, and what changes after the shares become yours. With that foundation, your RSUs can be evaluated as part of your compensation, tax picture, investment plan, and long-term financial goals.

Our firm can help you review vesting schedules, withholding, W-2 reporting, brokerage forms, cost basis, and the potential tax impact of selling or holding shares. We can also help connect RSU decisions to cash needs, company stock exposure, relocation, job changes, retirement planning, and portfolio risk.

If you have questions about RSUs or want a clearer plan for upcoming vesting dates, we would be glad to help. Schedule a complimentary consultation here to talk through your RSU situation and how it fits into the rest of your financial life.

Resources: 

1) Supplemental Withholding Rates

2) Tax Brackets and Deductions

Material prepared herein has been created for informational purposes only and should not be considered investment advice or a recommendation. Information was obtained from sources believed to be reliable but was not verified for accuracy. It is important to note that federal tax laws under the Internal Revenue Code (IRC) of the United States are subject to change, therefore it is the responsibility of taxpayers to verify their taxation obligations.