Illustration of OBBBA state conformity — a US map split into green and orange puzzle pieces over tax documents
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OBBBA State Conformity 2026: Does Your State Follow?

Does my state follow the new federal OBBBA tax breaks? Not automatically. OBBBA state conformity varies widely — some states adopt the new federal rules on R&D expensing, bonus depreciation, and Section 179, while others decouple. A deduction you claim on your federal return may be added right back on your state return. The One…