Located in the heart of Irvine’s business district, Withum is one of the nation’s top-rated and largest accounting firms in Orange County. Withum helps local corporations and nonprofits thrive, offering advisory, tax, audit, assurance and consulting services to the Orange County business community. We have a focus on SEC compliance and reporting, transaction advisory and M&A activity, plus the financial services, life sciences, technology, construction and industrial consumer products industries. We are more than just an Irvine accounting firm, we are a strong national resource providing all the traditional accounting and CPA services businesses and individuals require, plus a whole suite of advisory solutions to accelerate your success! That’s the Power in the Plus.