Your browser is unsupported

We recommend using the latest version of IE11, Edge, Chrome, Firefox or Safari.

Startup Tax Break Expansion Puts UIC Research in the Spotlight

Jun Chen and Joan Farre Mensa both wearing light colored dress shirts and black rimmed glasses

A recent New York Times article, “How Republicans Supersized Silicon Valley’s Favorite Tax Break,”  highlights the expansion of the Qualified Small Business Stock (QSBS) exemption, a policy that allows early investors and founders to avoid capital gains taxes on startup equity. The article cites a new research study, “Capital Gains Tax Relief and Entrepreneurship,” by UIC Business faculty Jun Chen and Joan Farre-Mensa, which demonstrates the exemption’s impact on boosting entrepreneurship and innovation.

The newly expanded exemption now allows up to $15 million in gains to be tax-free—up from the previous $10 million cap—and shortens the required holding period for stock from five years to just three, with partial benefits beginning even earlier. Supporters argue the policy encourages long-term investment in high-risk startups. Critics, however, contend that the benefits disproportionately favor the wealthiest investors.

Against this backdrop, the study by Chen and Farre-Mensa offers rare empirical insight into what such tax breaks actually achieve. Using comprehensive industry- and firm-level data, they found:

  • A 10% increase in new firm formation in QSBS-eligible sectors
  • A 23% rise in successful patent filings, with no decline in quality
  • Increased use of equity compensation, helping startups attract skilled workers
  • Improved access to early-stage venture capital, particularly first-round funding

The researchers conclude that targeted capital gains tax relief can meaningfully spur entrepreneurship and innovation, supporting a key argument made by proponents of the QSBS exemption.

📘 Read the full study on SSRN: Capital Gains Tax Relief and Entrepreneurship
📰 Read the NYT article: How Republicans Supersized Silicon Valley’s Favorite Tax Break