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The Tax Break Most Business Owners Don't Know They Qualify For

August 31, 2026

Why Qualified Small Business Stock (Section 1202) Deserves a Seat at Your Exit Planning Table

If you built your company as a C corporation — or you're weighing whether to convert to one — there's a provision buried in the tax code that could mean the difference between paying tax on a multimillion-dollar exit and paying nothing at all. It's called Qualified Small Business Stock, or QSBS, and it lives in Section 1202 of the Internal Revenue Code.

Despite its potential impact, QSBS remains one of the least understood tools available to founders, early employees, and investors. Here's what business owners need to know.

What QSBS Actually Does

If you hold stock in a qualifying C corporation for more than five years, you may be able to exclude up to 100% of your capital gain from federal tax when you sell — subject to a cap of the greater of $10 million or 10 times your original basis in the stock. For stock acquired after July 4, 2025, recent legislation also introduced a tiered exclusion schedule, allowing partial benefits after just three or four years of holding, rather than requiring the full five-year wait.

For a founder who started a company with a modest initial investment and sells years later for a substantial sum, this exclusion can be worth millions in avoided tax — legally, and without complex offshore structures or aggressive planning.

Who Qualifies

The rules are specific, and getting them wrong can be costly. Generally, to qualify:

  • The company must be a domestic C corporation at both issuance and sale (S corporations and LLCs don't qualify directly, though conversion strategies exist).
  • Gross assets must have been $75 million or less (the threshold was raised from $50 million for stock issued after the July 2025 changes) at the time the stock was issued.
  • The stock must be acquired directly from the corporation — original issuance, not a secondary purchase from another shareholder.
  • The company must be engaged in a qualified active trade or business. Certain service-based industries — think law, accounting, financial services, and health care — are generally excluded.
  • The holding period matters enormously. The clock starts when you receive the stock, not when the company is founded.

Where Business Owners Get Tripped Up

A few recurring issues we see in practice:

  • Entity structure decisions made years before an exit. By the time a sale is on the horizon, it's often too late to restructure and still capture the full benefit. This is a conversation worth having early — ideally at formation or well before any liquidity event.
  • Stacking the exclusion across family members. Gifting QSBS shares to a spouse, children, or a trust before a sale can multiply the per-holder exclusion cap, since each recipient gets their own limit. This requires careful timing and documentation.
  • Assuming eligibility without verification. Gross asset tests, active business requirements, and redemption rules (certain stock buybacks by the company can taint QSBS status) are all areas where founders assume they qualify and later discover they don't.

The Planning Opportunity

QSBS isn't a strategy you execute in the year you sell — it's a strategy that has to be built in from the early days of the business, or at minimum revisited well ahead of any liquidity event. That makes it a natural fit for business owners who are also managing concentrated equity positions, negotiating exit terms, or coordinating a sale with broader estate and gifting plans.

If you're a founder, executive, or business owner who hasn't had a conversation about whether your company stock could qualify for QSBS treatment, it's worth raising with your tax advisor and wealth manager before your next major liquidity event — not after.


This article is for general educational purposes and does not constitute tax, legal, or investment advice. QSBS eligibility depends on facts and circumstances specific to each situation. Please consult your tax advisor and wealth manager to evaluate your specific circumstances.

Peter Susic, CFA®, CFP® Founder & Private Wealth Manager, Fiducia Private Wealth Management peter.susic@fiducia-pwm.com | www.fiducia-pwm.com