Grant Thornton

Grant Thornton is a professional services network providing assurance, tax and advisory services to organizations in 150 markets worldwide. Founded in 1924 by Alexander Richardson Grant in Chicago, the network employs more than 80,000 professionals and reports global revenue of $8.5 billion, growing 6.1% annually. The US member firm employs over 8,500 people across 59 offices and ranks as the ninth largest accounting firm in the United States, with annual revenues of $1.9 billion.

The firm's work falls into three service lines. Assurance covers audit and assurance engagements; tax covers advisory and compliance services across industries; advisory covers management and other consulting work intended to complement traditional accounting. Technical domains cited by the firm include audit and assurance, tax advisory, management advisory, professional services technology and AI-powered technology. The firm serves 16 distinct industries, including what it describes as dynamic businesses.

Grant Thornton states a philosophy that "how we serve matters as much as what we do", describing collaborative relationships built on trust and care and a combination of global scale with local insight. The firm positions its work as helping clients realise their ambitions for growth.