Illustration of state decoupling from federal QSBS section 1202 exclusion under OBBBA — Maine and Oregon decoupled, California taxes QSBS gains, state conformity risk for founders
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State Decoupling from QSBS: OBBBA §1202 State Conformity Guide

Do states follow the federal QSBS exclusion under OBBBA — and why does state conformity matter? Not automatically. The One Big Beautiful Bill Act (OBBBA, Pub. L. No. 119-21) expanded the federal Qualified Small Business Stock (QSBS) exclusion under IRC §1202 — but states set their own conformity. Maine and Oregon have enacted legislation DECOUPLING…