ESPP Limits: What You Can Purchase in 2026

The IRS caps how much stock you can purchase through a qualified Employee Stock Purchase Plan at $25,000 per year. That number, set under Section 423 of the Internal Revenue Code, hasn’t changed in decades and remains static for both 2025 and 2026. Here’s how the limit actually works, how it’s calculated, and what it means for your financial plan.

Key Takeaways

• The ESPP limit is $25,000 per calendar year, measured by grant-date fair market value, not the discounted price you pay.
• The limit has remained unchanged for decades and is not indexed to inflation.
• In multi-year offerings, the plan is structured so that no more than $25,000 of stock (measured at grant-date fair market value) becomes exercisable in any single calendar year.
• Plans are designed to prevent you from exceeding the limit; if excess contributions occur, they are typically refunded.
• ESPP contributions are after-tax payroll deductions, meaning they don’t reduce your taxable income the way 401(k) contributions do.

Under IRC Section 423(b)(8), employees participating in a qualified ESPP cannot accrue the right to purchase more than $25,000 worth of company stock per calendar year. This is a statutory cap that applies to all Section 423 plans.

The critical detail most people miss: the $25,000 is based on the stock’s fair market value on the grant date (also called the offering date or enrollment date), not on the discounted price you actually pay. Your plan likely offers a discount of up to 15%, the maximum allowed under Section 423. That discount does not change how the IRS measures the cap.

This limit has been in place since the 1960s. Congress has never indexed it to inflation, which means its purchasing power has eroded significantly over time.

The calculation hinges on grant-date fair market value (FMV), which is the average of the high and low price of the stock on the day your offering period begins.

Consider Sarah, a senior product manager at a Bay Area tech company. Her ESPP offering period starts on January 1, when the stock trades at $100 per share. Under the $25,000 limit, Sarah can purchase up to 250 shares during that calendar year ($25,000 ÷ $100 = 250 shares).

Here’s how that plays out in practice. If her plan includes a 15% discount, Sarah pays $85 per share instead of $100. Her actual out-of-pocket cost for 250 shares is $21,250. But the IRS still counts $25,000 against her annual limit because it uses the grant-date FMV, not the purchase price.

If her plan also includes a lookback provision, the discount is applied to the lower of the offering-date price or the purchase-date price. This can create an even steeper effective discount when the stock has risen since enrollment. The lookback does not change how the $25,000 cap is measured; the grant-date FMV still governs.

The limit applies per calendar year, not per offering period or per purchase period. If your plan has two purchase dates within a calendar year (say June 30 and December 31), your combined purchases across both dates cannot exceed $25,000 in grant-date FMV.

The examples provided are to illustrate the $25,000 limit and are purely for illustrative purposes. The examples does not represent actual clients and Summitry is not aware of any clients who experienced similar financial situations. Results will vary based on client circumstances including but not limited to stock price, number of shares and there can be no guarantee that results will be similar to those presented herein.

Many ESPPs use offering periods that span 24 months, with purchase dates every six months. While this can make it feel like you’re building up unused capacity, the IRS limit does not work on a “carryforward” basis.

Under Section 423, the $25,000 cap applies to how much stock becomes exercisable in each calendar year, measured using the grant-date fair market value. Plans are designed to enforce this automatically.

Consider David, a software engineer enrolled in a 24-month offering with a grant-date price of $100 per share. Under IRS rules, no more than 250 shares ($25,000 ÷ $100) can become exercisable for him in any single calendar year.

Even if David contributes less in Year 1, he does not gain the ability to exceed the $25,000 limit in Year 2. Instead, the plan continues to limit how many shares can be purchased each year so that the annual cap is not exceeded.

At the end of the offering period, any unused payroll contributions are typically refunded, depending on the plan’s terms. They do not increase your purchase capacity in a future period.

The key takeaway: multi-year offerings can extend your participation window, but they do not allow you to “stack” unused limits to exceed $25,000 in a later year.

The ESPP limit remains $25,000 for both 2025 and 2026. No legislation has been introduced to change it, and there is no inflation-adjustment mechanism built into the statute.

While ESPPs aren’t retirement accounts, comparing their limits to other common savings vehicles helps illustrate how unusually the $25,000 cap is structured.

The 401(k) contribution limit for 2026 is $24,500, and it climbs each year. The ESPP limit, despite being higher in dollar terms, has remained flat for over 60 years.

Beyond the IRS cap, your employer may impose additional restrictions. Many plans cap after-tax payroll deductions at 10% or 15% of your base salary. If you earn $150,000 and your plan caps deductions at 15%, your maximum annual contribution is $22,500, which falls below the $25,000 IRS limit. Your effective cap is whichever number is lower.

If your contributions would cause you to exceed the $25,000 annual limit, your plan administrator is required to refund the excess contributions to you. The plan itself could lose its qualified status under Section 423 if it fails to enforce this cap properly.

This is your employer’s compliance responsibility, not yours. Most plan administrators build automatic safeguards into their payroll systems to prevent over-contributions. The obligation falls on the plan sponsor to administer the cap correctly.

When you sell ESPP shares, the tax treatment depends entirely on how long you held them. The IRS defines two categories based on specific holding period requirements, as outlined in its guidance on ESPP taxation.

Qualifying Disposition

To qualify, you must hold the shares:

• At least 2 years from the offering (grant) date, and
• At least 1 year from the purchase date

If you meet both requirements:

• The discount you received (up to 15% of the grant-date price) is taxed as ordinary income
• Any additional gain beyond that is taxed as long-term capital gains

In simple terms, you convert most of the upside into lower-taxed capital gains

Disqualifying Disposition (Selling Early)

If you sell before meeting either holding requirement, the tax treatment changes:

• The spread at purchase (the difference between what you paid and the stock’s value on the purchase date) is taxed as ordinary income
• Any additional gain or loss after purchase is taxed as a capital gain or loss (short- or long-term, depending on holding period)

In simple terms, more of your profit is taxed as ordinary income (higher tax rates).

Your employer reports ESPP purchases on Form 3922, which you’ll need for accurate tax filing. If you hold RSUs alongside your ESPP shares, the combined tax picture becomes more complex.

Contribute the maximum your cash flow allows.

The built-in discount (up to 15%) combined with a lookback provision can represent a significant benefit. Treat the contribution as a savings commitment, not discretionary spending.

Know your plan’s offering period structure.

A 24-month plan with a lookback can amplify your discount if the stock rises—but it also increases your exposure to a single stock over a longer period. A 6-month plan without a lookback is simpler and lower risk, but typically offers less upside.

The structure determines both your potential return and your risk.

Balance ESPP against other priorities.

Your 401(k) match, emergency reserves, and debt obligations come first. An ESPP is a powerful equity compensationtool, but it should fit within your broader financial plan, not compete with essential savings.

Manage concentration risk deliberately.

Holding too much of your net worth in your employer’s stock creates vulnerability. Develop a plan for when and how to sell ESPP shares, factoring in the qualifying disposition timeline and your overall portfolio allocation.

Can I participate in two ESPPs at the same time?

If you work for two employers that each offer a Section 423 plan, the $25,000 annual limit technically applies across all plans combined, not per employer. In practice, each employer administers its plan independently and does not coordinate with other companies. However, this does not change the underlying IRS rule.

You can participate in multiple ESPPs, but the $25,000 limit is still intended to apply per person, per year, not per plan.

Does the ESPP limit apply to non-qualified plans?

No. The $25,000 cap under IRC Section 423(b)(8) applies only to qualified (Section 423) plans. Non-qualified ESPPs, sometimes called Section 423(b) plans or simply employer stock purchase programs, set their own limits. However, non-qualified plans do not receive the same favorable tax treatment.

What happens to my ESPP shares if I leave my company mid-offering?

Most plans allow you to purchase shares with accumulated payroll deductions on the next purchase date, though some plans simply refund your contributions. Review your plan document or contact your HR department, as this varies by employer.

Can I change my ESPP contribution percentage mid-period?

Most plans allow you to decrease your contribution rate or withdraw entirely during an offering period. Increasing your rate mid-period is less common and depends on your plan’s specific terms. Changes typically take effect within one to two pay cycles.

How does the ESPP limit interact with stock splits or reverse splits?

A stock split doesn’t change the $25,000 limit; it simply adjusts the share price and share count proportionally. Your total purchase capacity stays the same in dollar terms, even though the number of shares changes.

This material is intended for general informational purposes only, and should not be construed as legal, tax, investment, financial, or other advice. It does not consider the specific investment objectives, tax and financial condition or needs of any specific person. To the extent that this material concerns tax matters, it is not intended or written to be used, and cannot be used, by a taxpayer for the purpose of avoiding penalties that may be imposed by law. Investing involves the risk of loss, including loss of principal.

Summitry, LLC is a registered investment advisor in the State of California. For more information about Summitry, including fees and services, please see our Form ADV Part 2A or contact us directly.