QSBS: How Florida C-Corp Founders Can Exclude Up to 100% of Capital Gains in 2026

One of the most valuable and underused tax incentives in the federal tax code is Section 1202 of the Internal Revenue Code - commonly called the Qualified Small Business Stock (QSBS) exclusion. When structured correctly, it allows eligible shareholders in a qualifying C corporation to exclude up to 100% of capital gains on the sale of their stock from federal income tax - up to $10 million per shareholder (or 10 times your original investment, whichever is greater).

For Florida founders and early investors in C corporations, QSBS is one of the most powerful exit planning tools available. And because Florida has no personal income tax, qualifying QSBS stock sold by a Florida resident can potentially generate zero state or federal tax on significant gains.

What Is QSBS?

QSBS refers to stock in a qualifying C corporation that meets specific requirements under IRC Section 1202. Shareholders who hold QSBS for more than five years can exclude from federal gross income the gain on the sale of that stock, subject to the per-issuer limit of $10 million or 10x basis, whichever is higher.

The exclusion percentage depends on when the stock was issued:

• Stock issued after September 27, 2010: 100% exclusion (zero federal tax on qualifying gains)
• Stock issued between February 18, 2009 and September 27, 2010:75% exclusion
• Stock issued before February 18, 2009:50% exclusion

For practical purposes, any C corporation stock issued today (2026) qualifies for the 100% exclusion if all other requirements are met.

QSBS Qualification Requirements

1. The Corporation Must Be a C Corporation

QSBS benefits are not available to LLCs, S corporations, partnerships, or any other pass-through entity. Only C corporations qualify. This is one of the primary reasons high-growth startups planning an exit or fundraising from institutional investors form as C corporations rather than LLCs.

2. The Corporation Must Be a "Qualified Small Business"

At the time the stock is issued, the corporation must be a "qualified small business" - meaning its aggregate gross assets must be $50 million or less at all times after August 10, 1993, and immediately after the stock is issued. This asset test is measured at the time of issuance, not at the time of sale. Once you exceed $50 million in assets, new stock you issue no longer qualifies - but previously issued qualifying stock retains its QSBS status.

3. The Corporation Must Be in a Qualifying Industry

QSBS is not available for businesses in certain industries. Disqualified businesses include:

• Professional services (law, health, engineering, accounting, consulting, financial services)
• Banking, insurance, and financing
• Farming
• Extraction of natural resources
• Hospitality (hotels, restaurants)

Qualifying industries include technology, manufacturing, retail, and most other active business operations not listed above. Florida's large technology and manufacturing sectors are well-positioned to benefit from QSBS.

4. The Stock Must Be Original Issue

QSBS status only attaches to stock acquired by the shareholder directly from the corporation - not on the secondary market. Stock purchased from another shareholder, or received in a merger where the acquiring corporation's stock was not QSBS, generally does not qualify.

5. The Corporation Must Be an Active Business

During substantially all of the holding period, at least 80% of the corporation's assets (by value) must be used in the active conduct of a qualified trade or business. A holding company that merely holds investment assets does not qualify.

6. The Shareholder Must Hold the Stock for More Than Five Years

The five-year holding period is measured from the date the stock was acquired. Shares received in exchange for property or services use different acquisition date rules. Stock option exercises start the holding period at exercise, not grant.

The Florida Advantage for QSBS Holders

Florida has no personal income tax. For a Florida resident who sells QSBS and qualifies for the 100% federal exclusion:

• Federal capital gains tax: $0 (100% exclusion under Section 1202)
• Florida state income tax: $0 (no state income tax)
• Net Realizable Tax Rate: potentially 0% on gains up to $10 million per issuer

Compare this to a California founder selling the same stock: California does not recognize the federal QSBS exclusion, so California state income tax (up to 13.3%) applies to the full gain. A $5 million gain generates $665,000 in California tax alone. In Florida, that same gain is tax-free.

QSBS Planning Strategies for Florida Founders

Form as a C Corporation from Day One

QSBS planning starts with entity selection. If you expect to grow a technology, manufacturing, or other qualifying business and plan for an exit within 5-10 years, forming as a Delaware or Florida C corporation from inception gives you the ability to issue QSBS from the start.

Issue Stock Early

QSBS is most valuable when issued at a low valuation and sold at a high one. Founders who form the corporation and issue stock before the company has significant value maximize the potential gain eligible for exclusion. Early employees and seed investors who receive QSBS have the longest runway to build toward the 5-year holding period.

QSBS Stacking (Section 1045 Rollovers)

If you sell QSBS before the five-year holding period is complete (or want to diversify beyond the $10 million per-issuer limit), Section 1045 allows you to roll the proceeds into new QSBS within 60 days without recognizing gain. The holding period carries over, helping you accelerate toward full exclusion eligibility.

Multiple Family Members

The $10 million exclusion limit applies per taxpayer, per issuer. If a founder's spouse also holds separately issued QSBS in the same corporation, both can potentially exclude $10 million each. Gifting QSBS to irrevocable trusts for children can further multiply the available exclusion.

Frequently Asked Questions