Performance Stock Units: How Payouts, Vesting, and Taxes Work

A performance stock unit (PSU) is a promise to deliver company shares only if the company meets goals set in advance. The number of shares is not fixed when the award is granted, and the shares are taxed as wages when they are delivered. Much of the confusion comes from three separate dates: earned, vested and settled.

How a PSU payout is determined

A PSU award starts with a target number of units. The final number depends on results measured over a performance period, which often runs three years but can be shorter. Common measures include revenue, operating income, earnings per share and total shareholder return compared with a group of peer companies. Plans usually express the result as a percentage of target. A threshold sets the level of performance below which nothing is earned, and a maximum limits how much can be earned above target. Results that fall between the threshold, the target and the maximum are often interpolated, so a result between two points produces a payout between the two matching percentages. Some awards also use a modifier, such as a reduction when shareholder return is negative. The award agreement sets the measures, their weighting, the range and any modifier.

The result is a share count, not a dollar amount. The dollar value depends on the stock price when the shares are delivered, which can differ from the price on the grant date.

Earning, vesting and settlement

Three dates are often confused. Units are earned when the company’s compensation committee certifies the performance results after the period ends. They vest when any remaining service requirement is met, which is sometimes the same day as certification and sometimes later. They settle when the company delivers the shares, or pays cash, to the employee.

Settlement timing is limited by Section 409A of the Internal Revenue Code. An award that is meant to be exempt from that section generally must be paid within two and a half months after the end of the later of the employee’s or the company’s tax year in which the units vest (Treasury Regulation Section 1.409A-1(b)(4)). Plans also address what happens at retirement, disability, death, a layoff or a change in control. Some provide a prorated payout based on time served, and others provide none. These terms appear in the award agreement and the plan document, and they vary by company.

How PSU shares are taxed

No income is generally recognized when a PSU is granted, because the employee holds only a promise to receive shares. Income is generally recognized when the shares are delivered and are no longer subject to a substantial risk of forfeiture. The amount is the fair market value of the shares on that date, and it is ordinary income reported as wages. If the company settles the award in cash instead of shares, the cash is also wages and is taxed when it is paid.

The wages appear in box 1 of Form W-2 and are subject to Social Security tax, Medicare tax and federal income tax withholding. For 2026, Social Security tax of 6.2% applies to wages up to $184,500, and Medicare tax of 1.45% applies to all wages. An Additional Medicare Tax of 0.9% applies to wages above $250,000 for a married couple filing jointly, $125,000 for a married person filing separately and $200,000 for everyone else. An employer must begin withholding it once wages paid by that employer pass $200,000, whatever the employee’s filing status.

Many companies collect the withholding by keeping back a portion of the shares, so the employee receives a net number of shares. Federal withholding is an estimate of the tax owed, not the final tax, and the amount withheld can be higher or lower than the tax shown on the return. For work done in Texas, the federal return is the main one.

After the shares are delivered

The employee’s tax basis in the shares is the amount included in wages. The holding period begins on the day after delivery. A later sale produces a capital gain or loss measured from that basis, and the result is long term if the shares were held more than one year. Changes in the stock price after delivery do not change the wage amount that was reported, so a later decline does not reduce the tax on the shares at delivery.

Points that tend to matter

• Overlapping cycles. Awards granted in successive years can settle in the same year, which adds to income for that year.
• Concentration. Delivered shares add to other holdings of employer stock, in a household that may already depend on the same employer for salary and benefits.
• Award terms. The treatment of unearned units when employment ends, which depends on the agreement.
• Trading policies. Company trading windows and insider trading policies may limit when delivered shares can be sold, and officers and directors who are subject to Section 16 of the Securities Exchange Act report transactions on Form 4.
• Settlement choices. Some plans let an employee defer settlement to a later date under a separate election, which brings Section 409A into the decision, so the plan document is the starting point.
• Withholding method. Whether the company withholds shares, takes cash or allows another method, and how the withheld amount compares with the expected tax.

The tax on a PSU payout cannot be sized until the performance period ends. When the shares arrive, a tax professional can work out the gap between withholding and the tax owed. Your adviser can help you consider a range of payouts alongside your other holdings.

This article is provided by Austin Wealth Management for general educational purposes only. It is not financial, investment, tax or legal advice, it does not consider your individual circumstances, and it does not create an advisory relationship. Austin Wealth Management provides advice and services only under a signed advisory agreement, and the terms of that agreement govern. Rules and limits change, so information here may not be current. Consult a qualified financial professional before making financial decisions.