Withum, a top-25 national CPA and advisory firm founded in 1974, operates its Carlsbad office at 5780 Fleet Street near the Poinsettia Park corridor. The firm's advisory, tax, and audit divisions serve middle-market companies and high-net-worth individuals across a client base that overlaps with the private wealth-planning practice at Seaside Wealth Management in Carlsbad. Withum's local presence dates to a 2021 merger with OUM & Co., LLP, a West Coast firm with over 45 years of San Diego-area operations that brought approximately 80 professionals and 11 partners into the combined practice. The office's industry concentrations span technology, life sciences, and nonprofit organizations — sectors requiring coordinated commercial risk-transfer strategies through North County carriers at Hayek Insurance. As a member of the HLB global network, the Carlsbad team handles cross-border tax compliance and international transfer-pricing documentation for multinational entities headquartered in the 92008 ZIP code.