Since its founding in 1979 by Juan C. Salles †, Manuel Sainz, and José Luis González Lozano †, the Firm has remained committed to providing services to its clients under high operating standards, such as professional quality, experience, and both personal and team commitment, while always maintaining effective communication with CEOs, CFOs, and corporate directors.
Salles Sainz Grant Thornton S.C. has offices in Mexico City, Aguascalientes, Ciudad Juárez, Guadalajara, Monterrey, Puebla, Puerto Vallarta, Querétaro, and Tijuana. We have nearly 1,000 highly trained professionals and provide attentive service and direct interaction from our partners, managers, and professional staff.
Salles Sainz Grant Thornton S.C. is a member of Grant Thornton International, one of the world’s leading organizations of independently owned and managed accounting and consulting firms. We provide audit, tax, consulting, and specialized services to private companies, large corporations, and publicly traded companies. Grant Thornton International is represented in more than 156 markets. The strength of each local firm is reflected in the quality of the international organization. All member firms of Grant Thornton International share a commitment to consistently delivering high‑quality services to clients of any size, anywhere in the world.
What do we do?
Throughout our history, Salles Sainz Grant Thornton has provided valuable services to organizations with growth potential. To operate at an international level, we must adapt to market conditions and navigate complex transactions and events.
Our Mission:
To deliver excellence in Audit, Tax, and Business Advisory services through innovative, efficient, and profitable management, supported by the prestige of our Firm, in a way that enables the professional and economic growth of each of its members.
Our Vision:
To be a national Firm that provides innovative and high‑quality services through highly trained, motivated personnel who are aligned with the values of our organization, thus achieving continuous growth and profitable results.
Our Values:
- Collaboration: ask for help, offer help – we work well together.
- Leadership: be courageous and inspire others – challenge your colleagues objectively and we will deliver our best.
- Excellence: find a better solution every time – never fall into complacency.
- Agility: broad thinking and quick action – we make an impact in changing environments.
- Responsibility: use influence wisely – we take ownership of our responsibilities.
- Respect: listen and understand, act with honesty – we build genuine relationships.
What sets Salles Sainz Grant Thornton apart?
Our culture is unique, as are the opportunities we offer. This makes Salles Sainz Grant Thornton an organization where you can develop your professional career.
The culture at Salles Sainz Grant Thornton focuses on distinctive client service, wherever our services are delivered.

