Salles Sainz Grant Thornton: Leadership that Transforms the Client Experience

In the dynamic business environment of the Bajío region, the Querétaro office of

has established itself as a benchmark in professional services including audit, tax, consulting, and business solutions. Leading this operation is Luis Guillermo Ramo Aguirre, a certified public accountant and alumnus of the National Autonomous University of Mexico (UNAM). Since 2006, he has directed the firm’s growth strategy in the region. He began his career in 1990 as an audit assistant in the firm’s Mexico City office. However, his strategic vision and commitment to quality led him to spearhead the company’s expansion into Querétaro in 2003. Ramo Aguirre emphasizes that true leadership is not measured solely by financial results, but by the ability to foster trust and close client relationships. “Our approach is based on actively listening to clients, understanding their challenges, and offering personalized, never pre-established, solutions,” he states. This philosophy has allowed them to maintain long-term relationships and attract new businesses in sectors such as manufacturing, consumer goods, hospitality, technology, mining, and construction.

Key Services of Grant Thornton in Querétaro

The Querétaro office offers a comprehensive portfolio to serve businesses and large corporations in the region with services including:

Audit: High technical quality under NIF, IFRS, and US GAAP. Firm registered with PCAOB to audit publicly traded companies.
Business Advisory Services (BAS): Results-oriented consulting to improve operations and add value.
Business Process Solutions (BPS): Accounting, tax, and payroll administration to enhance the competitiveness of SMEs.
Foreign Trade: Global support through the Grant Thornton International network.
Tax and Transfer Pricing: Specialized advisory services with over 50 experts in the field.

According to Salles Sainz Grant Thornton —under the leadership of Ramo Aguirre— the Querétaro office has achieved sustained growth in its client portfolio. This includes participation in strategic projects for local businesses and large corporations, as well as recognition as a trustworthy, ethical, and client-centric firm.