
Your QSBS Win Is Federal-Only in California: What Founders Owe the State on a 'Tax-Free' Exit
California does not conform to Section 1202, so a QSBS gain that is 100% excluded federally is taxed in full at state rates up to 13.3% — a $4 million exit can leave a founder owing roughly $350,000–$450,000 to Sacramento. This guide covers the 2025 QSBS expansion's new three- and four-year tiers, why California repealed its own exclusion, the real math on graduated brackets and the 1% surcharge, and what an FTB residency audit demands from founders who move before selling.










