Qualified small business stock (QSBS) offers one of the most valuable tax benefits available to startup founders, employees and early investors: the ability to exclude up to 100% of federal capital gains at exit. But here’s what matters for planning: QSBS is a one-time opportunity. Once a company loses it, the benefit can’t be recovered.

To qualify, shares must meet IRS Section 1202 requirements—including being held for at least five years for the full exclusion. The strategic decisions founders make now, often years before a liquidity event, can determine whether they capture the benefit or lose it permanently.

What is QSBS?

QSBS refers to shares in a domestic C-corporation that meet IRS Section 1202 requirements. If stock qualifies, one may be able to exclude up to 100% of federal capital gains when they sell—one of the most generous provisions in the tax code, with the full exclusion available after five years. 

Why does this benefit exist? Early-stage investors, including shareholders and employees, lock up capital for years in ventures that may fail. Section 1202 rewards that risk by offering favorable treatment for patient investment in small businesses. This is particularly impactful for growth-oriented businesses in the innovation economy.

To qualify, shares must meet these three core requirements, among others:

• The stock must be acquired at original issuance, not on a secondary market
• The company’s gross assets must be under a certain threshold at the time of issuance
• At least 80% of the company’s assets must be used in active business; certain industries (including law and hospitality) are excluded

The exclusion is capped at a dollar amount or 10 times the adjusted basis, whichever is greater. The specific cap depends on when shares were issued: 

• Stock issued on or before July 4, 2025:
  • 100% exclusion if held for five years
  • Cap: $10 million or 10x basis
• Stock issued after July 4, 2025:
  • Graduated exclusion: 50% if held for three years, 75% if held for four years, 100% if held for five or more years
  • Cap: $15 million or 10x basis

Understanding ownership is an important first step as QSBS only applies to stock issued to the shareholder directly by a U.S. C Corporation. For example, stock options must be exercised for the shares to be issued by the company. Confirming whether shares qualify for QSBS is the first step.

Who qualifies for QSBS?

QSBS eligibility applies to shareholders, including founders, early employees and investors, who receive shares directly from a qualifying company. But the company itself must meet the requirements first, and that’s where planning gets critical.

“If the company’s gross assets have ever exceeded $75 million or the corporate bank account reaches $75 million, it cannot issue any more QSBS,” said Gigi Orta, managing director and wealth advisor at J.P. Morgan Private Bank. “Even if assets later decline, eligibility doesn’t come back.”

Eligibility is based on gross assets, not valuation. A company worth $1 billion on paper can still issue QSBS if its gross assets have never exceeded the threshold.

“If there’s only $74 million that has ever been in the bank, it’s still a qualified small business,” Orta said.

A 2025 legislative change may reopen the door for some companies. In 2025, the gross-assets cap increased from $50 million to $75 million. Companies that previously exceeded $50 million but have never crossed $75 million may be able to issue QSBS again.

Planning for QSBS

Stacking the exclusion

The QSBS exclusion cap applies per taxpayer—which is why stacking matters. 

Stacking means distributing QSBS-eligible shares across multiple taxpayers to multiply the total benefit. Whether gifted outright or transferred to trusts for the benefit of others, transferring QSBS to others can extend eligibility further.

The math adds up quickly. If the cap is $15 million per taxpayer, a founder that stacks across three irrevocable trusts for the benefit of others could potentially shield $60 million from federal capital gains tax. A founding team that plans early can significantly increase the total exclusion available.

These strategies require coordination with wealth and tax advisors—ideally well before a liquidity event, when planning flexibility is greatest.

Rollovers and acquisitions

Holders who sell QSBS before the five-year mark have another option: rolling the proceeds into another QSBS-eligible company, preserving the initial issuance date.

“One can find another small business and invest in that,” Orta said. “For serial entrepreneurs, this means the QSBS benefit can follow into the creation and funding of a new business.

For example, a founder who exits after four years could invest in a new QSBS-eligible venture and reach the five-year threshold after just one more year, preserving eligibility for the full exclusion.

In some acquisitions, the holding period can continue with the acquiring company’s stock.

“If a small business gets acquired by a larger business, then one can continue a holding period with the acquiring company stock,” said Lauren Clark, executive director and banker at J.P. Morgan Private Bank. “When one eventually sells, they’ll have the same QSBS exclusion they would have had at the time of the acquisition.”

Timing and coordination

A funding round that pushes gross assets over $75 million permanently disqualifies new QSBS issuance. The window before that round is the last opportunity to exercise options or formalize grants that carry eligibility.

“If a round will disqualify QSBS, that’s when the C-suite and shareholders should weigh the pros and cons of exercising options while the exclusion is still available,” Orta said.

Founders face a unique challenge: they’re company leaders and also individual shareholders, and those roles can be in tension. A funding decision that accelerates growth might simultaneously disqualify the founder’s personal QSBS benefit.

“What is best for the company may or may not be what’s best for an individual shareholder,” said Clark. “Founders are wearing both hats. They have to make decisions that are good for the company, but they're also an individual shareholder. They can get individual tax considerations. Part of what’s so amazing about J.P. Morgan is that we have experts who can give guidance on all sides of the transaction.”

What founders overlook about QSBS

One of the biggest misconceptions? Not realizing one has QSBS at all.

“I have talked to people who donated their earliest shares to charity because they did not understand what they had,” Orta said. “They gifted the QSBS shares without knowing it.” 

If unsure whether stock qualifies, start investigating now—confirm the company’s gross asset history, review grant documentation and complete records before a liquidity event forces the question.

“It’s one of the biggest benefits we have in the code,” Orta said. “It’s too valuable to lose by accident.”

_{This is not a product of the Research Department of J.P. Morgan Securities LLC.}