Grant Thornton LLP

Grant Thornton LLP is a professional services network that has provided assurance, tax and advisory services to organizations since 1924. Its offerings span audit and assurance work, tax advisory and compliance, and a broader advisory practice that includes AI-powered technology and industry-specific insights. The firm serves dynamic businesses across 16 distinct industries and reports that it goes beyond traditional accounting to help clients realize their ambitions.

The network employs more than 80,000 professionals across 150 markets worldwide and generated $8.5 billion in global network revenue. The United States member firm, founded in Chicago, ranks as the ninth-largest accounting firm in the country, with 8,500-plus employees across 59 offices and annual revenues of $1.9 billion. Global network revenue grew 6.1% year on year.

The firm describes its philosophy as holding that how it serves matters as much as what it does, and places emphasis on collaborative relationships built on trust and care. Its stated approach combines global scale and expertise with deep local insight, supported by AI-powered technology and industry-specific knowledge as service differentiators.