Performance Stock Units: 4 Situations and Who Fits Each

Performance Stock Units: 4 Situations and Who Fits Each

Performance stock units are a promise with a condition attached. Your employer grants a target number of shares, you earn some, none or more than the target depending on whether the company hits a goal, and the tax bill lands on whatever you earned. That means the size of the payout, and the size of the tax on it, is unknown until the end of the performance period. The surprise tends to arrive in the year the payout is largest.

Two firms in our featured program are written up here. Doug Johnson CPA, a Los Angeles firm that lists Equity Compensation among its specialties, may fit where a large payout changes your tax position. Iota Finance, a firm that lists Florida at the state level and also lists Equity Compensation and Digital Nomads, may fit where a move complicates it. Every firm named is a vetted Sam's List member. The firms written up below are paying members of our featured program, and payment does not buy the language we use about them or their reviews. The full methodology is at the end of this post.

The four situations are not ranked and neither are the firms. Nothing here is investment advice.

What Performance Stock Units Are and How They Differ From RSUs

Performance stock units, often called PSUs, are a form of restricted stock unit that vests on a performance condition, usually measured over a period of one to three years. The condition may be revenue, profit, a share-price measure or the company's return compared with peers. Your award agreement sets a target number of units and a range, so the number you actually receive can be below or above the target.

The key difference from a standard RSU is uncertainty. A time-based RSU vests on a schedule you can plan around. With PSUs the amount, and sometimes the date, is set when results are certified. Your plan documents say how and when.

The limitation: PSUs are not a promise of any value. If the goal is missed, the units can pay out at zero, and if the stock falls, the shares you receive are worth less than you expected.

Situation 1: PSU Vesting Tax on a Payout Above Target

When PSUs settle, the value of the shares you receive is generally taxed as pay, and your employer withholds on it. PSU vesting tax is the same basic idea as for RSUs, but the amount can be much larger than you planned for if the company beat its goal and your award paid above target.

A payout in a strong year can push your income into a higher bracket than your paychecks suggested. The fix is usually timing: estimated tax payments, higher paycheck withholding or cash set aside. The sooner you know the likely payout, the more options you have, so ask your CPA to run a range of outcomes before results are certified.

Doug Johnson CPA may fit, since its live profile describes high earners with equity compensation and lists Equity Compensation as a specialty.

The limitation: the profile does not mention PSUs by name, and the firm lists minimums of $250,000 in income and $250,000 in revenue. Check those against your own income and ask what planning is included.

Situation 2: PSU Withholding When the Rate Falls Short

PSU withholding usually follows the same rules as other supplemental wages, and a flat rate is common. For someone with a high salary, the flat rate can be lower than the rate on the next dollar, so the withholding runs short even though shares were sold or held back to cover it. The shortfall shows up on the return as tax due, and in some cases as an underpayment penalty.

Look at the settlement statement for how withholding was funded. Some plans sell shares to cover and others keep back shares from the payout. The two look different on the paperwork and can change what appears on your broker's Form 1099-B.

Doug Johnson CPA may fit again for the planning side.

The limitation: withholding is a deposit toward your tax, not the tax itself. Your CPA works out what you actually owe, and the answer depends on all of your income for the year.

Situation 3: Leaving Before Your Performance Stock Units Pay Out

If you leave before the period is over, what happens to the PSUs depends on the plan and on why you left. Some awards are forfeited. Others continue for retirees or after certain terminations, and some prorate the award for the time you worked. A few pay out at target or at actual results once the period ends, which can be well after you have gone.

Get the award agreement and the plan before you sign a separation or retirement paper. A payout that arrives after you leave is still taxable in the year it is paid, and it may arrive with a different mix of state tax if you have moved.

Iota Finance may fit if the exit comes with a move, since its profile serves clients nationwide and lists Equity Compensation as a specialty.

The limitation: whether the award survives is a question of contract, for your employer and an attorney, not for a CPA. Iota Finance's profile lists minimums of $200,000 in income, $500,000 in revenue and $500,000 raised, so check that your situation fits.

Situation 4: Moving Between States or Countries During the Performance Period

A performance period can last three years, and a lot of people move in three years. Some states may tax part of a payout based on where you worked while the award was being earned, not where you lived when it settled. Abroad, a country may also claim a share, and a tax treaty may reduce the double tax. The allocation depends on your residency status and dates in each place.

Keep a log of your move dates, your work location for each period, and the grant, performance period and settlement dates. Those few facts help a preparer allocate the income, and they are easy to lose after a move.

Iota Finance may fit, since its profile lists Digital Nomads as a specialty. Doug Johnson CPA may fit for the equity side of the same case.

The limitation: neither profile names multistate allocation or treaty work. Ask each firm whether it prepares returns for more than one state or country and who handles the other side.

Where Doug Johnson CPA Fits

Doug Johnson CPA is based in Los Angeles, serves clients nationwide and was founded in 2024. It has 3 employees and lists minimums of $250,000 in income and $250,000 in revenue. Its live profile positions the firm for growing businesses with $250,000 to $10 million in revenue and for high earners with equity compensation, and lists Equity Compensation, Growing Companies and HENRYs (High Earners, Not Rich Yet) as specialties.

Doug Johnson CPA has 15 verified client reviews on Sam's List as of 2026-11-03. Each review is submitted by an individual who identifies as a client of the firm and rates it on communication, subject-matter knowledge, and overall satisfaction. Reviews reflect those individual experiences and do not represent an endorsement by Sam's List. Doug Johnson CPA is a paying member of our featured program, and payment does not buy its reviews. Ratings and rankings are not indicative of future performance or results.

The limitation, plainly: the profile does not mention PSUs, withholding methods or state allocation by name, so ask what is included, and check the minimums against your own.

Where Iota Finance Fits

Iota Finance lists its location at the state level, Florida, without naming a city, and serves clients nationwide. Founded in 2022, it has 7 employees and is led by Igor Tutelman CPA as managing partner. Its live profile lists Cryptocurrency Investors, Digital Nomads and Equity Compensation as specialties, and describes monthly accounting, tax and fractional CFO services for small businesses, startups and entrepreneurs.

Iota Finance has 14 verified client reviews on Sam's List as of 2026-11-03. Each review is submitted by an individual who identifies as a client of the firm and rates it on communication, subject-matter knowledge, and overall satisfaction. Reviews reflect those individual experiences and do not represent an endorsement by Sam's List. Iota Finance is a paying member of our featured program, and payment does not buy its reviews. Ratings and rankings are not indicative of future performance or results.

The limitation, plainly: the profile lists minimums of $200,000 in income, $500,000 in revenue and $500,000 raised, and does not mention PSUs or award agreements by name, so ask whether your situation fits.

Frequently Asked Questions

What are performance stock units?

Performance stock units are restricted stock units that vest only if a performance goal is met over a set period. The number of shares you receive can be below, at or above your target depending on results. Your award agreement describes the measure, the period and the range.

How are PSUs taxed when they vest?

Generally, the value of the shares you receive at settlement is taxed as pay, and your employer withholds on it. Any gain or loss after that comes when you sell. Your CPA decides how it applies to you, and state and foreign rules may add to it.

Why is my PSU withholding lower than the tax I owe?

Withholding often follows a flat supplemental rate, while your actual tax depends on your total income. A high earner can be under-withheld. Ask your CPA whether estimated payments or a change to paycheck withholding makes sense for your year.

What happens to PSUs if I leave my job?

It depends on the plan and the reason you left. Some awards are forfeited, some prorate and some continue to pay out after the period ends. Read the award agreement before you sign any separation paper, and ask an attorney if the terms are unclear.

Before you call anyone, gather your award agreements, settlement statements, your Form W-2, the broker's Form 1099-B and a note of where you lived and worked during the performance period. You can browse accountants on Sam's List, including the firms above, and ask each which of the four situations it handles most.

How We Picked These Firms

You should be able to check our work, so here is how this post was built.

The pool. The pool is the two firms written up here, both vetted Sam's List members in our featured program. Both list Equity Compensation among their specialties. This is not a survey of every firm that handles equity compensation, and many Sam's List members and other firms not written up here could fit.

How it is organized. The four situations are not a ranking, and neither are the firms. Each firm is placed where its profile appears to fit the question, and neither profile names PSUs, so we say so. The firms appear in the order they first fit one of the four situations, and that order is not a ranking.

What review counts mean here. We cite each firm's verified review count and its date from its profile. A count shows how many clients wrote something down. It does not measure technical quality.

What payment does and does not buy. Listing on Sam's List is free, and so is being named in this article. The firms written up here are paying members of our featured program, which is why they get a write-up. What payment does not buy is the language we use about a firm, its review count, or a promise that it fits you.

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About the author: Kimberly Green is the cofounder of Sam's List, where business owners and high earners find vetted CPAs, financial advisors, and fractional CFOs. She's met one-on-one with 400+ financial professionals and writes from the real data behind thousands of client-advisor matches. Ask her anything about finding an accountant - she's heard it all, including the questions people are afraid to ask.