What Is an Employee Stock Purchase Plan (ESPP) and How Is It Taxed?
An employee stock purchase plan (ESPP) lets eligible employees buy their employer's stock through payroll deductions, often at a discount. In a qualified plan, the purchase price generally cannot be set below 85% of fair market value, and tax is generally due when you sell. The mix of ordinary income and capital gain depends on how long you hold.
If you already hold a meaningful amount of your employer's stock, an ESPP can add to that position every purchase period. This guide covers plans that follow Section 423 of the Internal Revenue Code: how they work, how the discount is taxed, and where concentration risk can build. It is general education, not tax advice, and it recommends no security, company, or strategy. Rules and figures below are as of November 6, 2026, come from the IRS and the statute where linked, and can change.
How does an employee stock purchase plan work?
Most plans follow the same cycle. You choose a percentage of pay to set aside, the plan holds that money during an offering period, and on a purchase date it uses the accumulated amount to buy shares at the plan's price. Your employer's plan documents set the details, so the terms below describe the general rules for Section 423 plans, not your plan specifically.
- Grant date. The start of an offering period, when the option to buy is granted.
- Purchase date. The date accumulated contributions buy shares, which the tax rules treat as exercising the option.
- Price. Some plans use the lower of the stock's value on the grant date or the purchase date. IRS Publication 525 (2025 edition, viewed November 6, 2026) describes a plan of this kind in its Example 9.
- Taxes at purchase. Under IRS Topic no. 427 (viewed November 6, 2026), you generally do not include an amount in income when an ESPP option is granted or exercised. Tax generally arises when you sell.
What limits apply to a Section 423 plan?
Federal law sets guardrails for plans that want the favorable tax treatment. These are the main ones, as of November 6, 2026.
| Rule | What the statute provides | Source |
|---|---|---|
| Price floor | The option price may not be less than the lesser of 85% of fair market value at grant, or an amount that cannot be below 85% of fair market value at exercise | 26 U.S.C. 423(b)(6) |
| Annual purchase limit | Rights to buy stock may accrue at no more than $25,000 of fair market value per calendar year, measured at the grant date, across the employer's Section 423 plans | 26 U.S.C. 423(b)(8); IRS Publication 5992 |
| Offering length | An option cannot be exercised after 5 years from grant if the price is based on exercise-date value, or after 27 months if it is not | 26 U.S.C. 423(b)(7) |
| Who may participate | Employees who own 5% or more of the company's stock cannot be granted options, and plans may exclude highly compensated employees | 26 U.S.C. 423(b)(3) and (4) |
| Employment | Generally you must be an employee from the grant date until 3 months before the purchase date | 26 U.S.C. 423(a)(2) |
The $25,000 limit is measured by the stock's value on the grant date, not by what you pay, so it is not simply a cap on your cash contributions. A plan may also set lower limits than the statute allows, and plans that do not follow Section 423 are taxed under different rules.
How is the discount taxed: qualifying vs disqualifying disposition?
The tax result turns on one question: did you meet the holding period before selling? Per Publication 525, you meet it if you do not sell until the end of the later of two periods: 1 year after the stock was transferred to you, or 2 years after the option was granted. Your holding period for the shares starts the day after the purchase date.
Selling after that is a qualifying disposition. Selling sooner is a disqualifying disposition. Here is how the two compare, per Publication 525 (2025 edition, viewed November 6, 2026).
| Qualifying disposition | Disqualifying disposition | |
|---|---|---|
| Holding period | Later of 2 years after grant or 1 year after purchase | Sold before that date |
| Ordinary income (treated as wages) | The lesser of (a) the grant-date value minus the option price, or (b) your actual gain on the sale. None if you sell at a loss | The purchase-date value minus the price paid, even if your actual gain is smaller |
| Capital gain or loss | The rest of the gain is capital gain. A loss is a capital loss | The difference between your sale price and your basis, increased by the ordinary income, is capital gain or loss |
| Long-term or short-term | Long-term when held more than 1 year (Topic no. 409) | Depends on how long you held after purchase, one year or less being short-term |
| Reporting | Form 3922 from your employer; adjust basis as needed | Form 3922 from your employer; adjust basis as needed |
If the option price was not fixed when the option was granted, Publication 525 says to figure it as if the option had been exercised on the grant date. Gains may also be subject to the 3.8% net investment income tax above income thresholds (IRS Topic no. 559, viewed November 6, 2026).
A hypothetical example
Hypothetical example for illustration only, adapted from the figures in Examples 10 and 11 of IRS Publication 525. It is not a projection or a recommendation, and individual results differ. Assume a Section 423 plan, 100 shares, an option price of $20 per share, a $22 share value on the grant date, a $23 share value on the purchase date, and a $30 sale price. The total gain is $1,000 in both cases.
- Qualifying sale (more than 2 years after grant and 1 year after purchase): $200 is ordinary income (the $22 grant-date value minus $20, times 100 shares) and $800 is capital gain.
- Disqualifying sale (6 months after purchase): $300 is ordinary income (the $23 purchase-date value minus $20, times 100 shares) and $700 is capital gain.
Limitations: the example shows only how the gain is characterized. It ignores tax rates, state tax, the net investment income tax, trading costs, and the risk that the price falls during a longer holding period, which can reduce or erase the gain.
Is an ESPP worth it?
It depends on the plan, your finances, and how you handle the shares afterward. The discount can be a real benefit, and deferring tax on it until you sell may have value. Each benefit comes with a cost:
- Price risk. A discount does not prevent a loss if the stock falls between purchase and sale.
- Less take-home pay. Money set aside through payroll is not available for other uses, and some plans limit when you can withdraw it.
- Ordinary income. Part of the gain is taxed as ordinary income, not as capital gain, even in a qualifying sale.
- Holding-period trade-off. Waiting for qualifying treatment may change the tax mix, but it keeps you exposed to the stock for longer.
- Concentration. Your paycheck, bonus, and other equity may already depend on the same employer.
What happens to an ESPP if you leave your employer?
The statute generally requires you to be an employee from the grant date until 3 months before a purchase date, so leaving can affect whether an upcoming purchase happens. What happens to contributions held but not yet used is set by your plan documents. Many plans return them, but terms differ, so ask the plan administrator.
Shares you already bought are generally yours. The holding period test runs from the grant and purchase dates under Publication 525, and the statute's employment requirement is tied to the period before exercise. Timing a sale around a job change can still affect your tax mix and cash needs, so it helps to plan before you give notice.
How can an ESPP grow a concentrated position?
Each purchase period adds shares of the same company you already work for. If you also receive stock-based pay or hold shares from earlier years, small recurring purchases can accumulate into a large share of your net worth. The discount may make holding feel attractive, while a drop in the share price could affect your portfolio and your employment income at the same time.
Two broad approaches to newly purchased shares are common, and neither is right for everyone.
| Approach | What it seeks to do | Trade-offs and limits |
|---|---|---|
| Sell soon after purchase | Limit time exposed to one stock and turn the discount into cash | The sale is typically a disqualifying disposition, so more of the gain may be taxed as ordinary income |
| Hold for the qualifying period | May shift part of the gain to capital gain treatment | Months or years of added concentration, and a price decline could outweigh the tax benefit |
Larger positions often call for broader tools. The categories people discuss include staged selling, gifting, charitable giving, hedging, and exchange-style diversification. Each has its own tax effects, costs, and limits, and none is a recommendation here. If you are an officer or director, company trading windows and insider-trading policies may also limit when you can sell, so confirm those rules with your company's counsel.
How we coordinate with your CPA and estate attorney
An ESPP touches several professionals' work. Your CPA handles the return, including the wage inclusion, Form 3922 data, and basis adjustments when a 1099-B does not reflect them. An estate planning attorney can speak to gifting shares, trusts, and how holdings are titled. Your advisor looks at how the shares fit the whole portfolio, including concentration and when to sell.
At Integrity Wealth, in-house CPAs and in-house estate planning attorneys work alongside the advisors, which may make coordination easier. Many people also keep outside professionals, and we work with them. Coordination depends on everyone having current information, and it does not remove the tax cost or market risk of a decision. Our tax planning and financial and retirement planning services describe how we approach this kind of work.
Frequently asked questions
What does ESPP stand for, and who can join?
ESPP stands for employee stock purchase plan. Under Section 423, options go to employees, owners of 5% or more of the company cannot take part, and plans may exclude highly compensated employees (26 U.S.C. 423, as of November 6, 2026). Your plan sets the rest.
How big can an ESPP discount be?
For a Section 423 plan, the option price generally may not be less than 85% of fair market value, measured at the grant or purchase date depending on the plan (26 U.S.C. 423(b)(6), as of November 6, 2026). A discount is not a guaranteed gain, because the price can fall.
Is there a limit on how much I can buy each year?
Yes. Section 423 limits rights to buy stock to $25,000 of fair market value per calendar year, measured at the grant date (26 U.S.C. 423(b)(8), as of November 6, 2026). Your plan may set a lower cap.
Do I owe tax when I buy ESPP shares?
Generally not. IRS Topic no. 427 says you generally include no amount in gross income when a statutory option is granted or exercised (viewed November 6, 2026). Tax arises when you sell. State rules can differ, so confirm with your CPA.
What is Form 3922?
Form 3922 is the statement you should receive from your employer after the first transfer or sale of stock acquired through an ESPP. It reports dates and values used to figure ordinary income and capital gain (IRS Topic no. 427 and About Form 3922, viewed November 6, 2026). Keep it with your records and share it with your CPA.
Should I sell ESPP shares right away or hold them?
There is no single answer. Selling soon after purchase reduces concentration but usually produces a disqualifying disposition. Holding for the qualifying period may change the tax mix but extends your exposure to one stock. Your tax picture, cash needs, and other holdings all matter, so review the decision with your CPA and advisor.
Can I lose money in an ESPP?
Yes. If the share price falls after purchase, you could sell for less than you paid, and the discount may not cover the decline. Money set aside from your pay is also not available for other uses while it waits for the purchase date. Participation involves investment risk, as with any stock holding.
What is a sensible next step?
If you hold employer stock and want to understand how an ESPP fits your tax and diversification picture, a discovery conversation is one way to start. Book a discovery conversation and bring your plan summary and any Form 3922, or read more about our tax planning and financial and retirement planning services first. Planning of this kind seeks to make decisions more deliberate and does not promise a particular tax result.
Investment advisory services offered through Accurate Wealth Management LLC, an SEC Registered Investment Advisor. Registration does not imply any level of skill or training. Insurance services offered through Accurate Advisory Group Inc. Securities offered through AAG Capital, Inc. Member FINRA/SIPC. Information presented on this site is for educational purposes only. It should not be considered specific investment advice, does not take into consideration your specific situation, and does not intend to make an offer or solicitation for the sale or purchase of any securities or investment strategies. Investments involve risk and are not guaranteed. Be sure to consult with a qualified financial adviser and/or tax professional before implementing any strategy discussed herein.
