Grupo GNP: A professional firm with apetite for growth

Grupo GNP is an organization founded in 2006 under the leadership of Guillermo N. Pérez former Head of the Tax Division of Andersen and later Ernst And Young in Argentina.

Guillermo, was also member of many international committees in Andersen and EYI. This fact let him develop a significant network of tax professionals around the world, and achieve international recognition and awards:

Award to Guillermo N. Pérez as “Top Advisor" of Argentina in international market surveys conducted by:

International Tax Review for eight consecutive years (from 1998-2004)

Mondaq Guide in 2000 and 2001.

World Tax (ITR) and Euro money Legal Group from 1999 to 2002.

After retiring from EY in 2004, and two years of the non-competition clause, during which he was part-time CEO of SINTEPLAST (leading paint company in Argentina), he decided to found Grupo GNP.

With his entrepreneurial spirit, Guillermo started Grupo GNP in a single floor office located in the most exclusive district of the city and within a few minutes from the business and financial core of Buenos Aires. After experiencing an exponential growth, the company currently own half of the building (5 floors).

At present time, Grupo GNP gathers approximately 40 people and is the profesional firm with the highest and most rapid growth in Argentina since its creation. The development of the best fiscal strategies for its clients to optimize the tax burden and minimize contingencies and fiscal risks is the principal objective of the firm.

Considering both, the Tax and the Business Consulting divisions, Grupo GNP counts with a principal partner and CEO (Guillermo N. Perez) with over 40 years of experience, a Business Consulting and Outsourcing Partner (former Andersen and Ernst & Young with more than 20 years of experience), a Tax Partner (former Andersen and Ernst & Young with more than 20 years of experience) and, four associates with more than 16 years of experience.

Guillermo N. Pérez, participates in several forums such as IAEF (the most important event in the country's finances and economy), IDEA (the mayor business forum of Argentina) and the AAEF (Institute of finance executives).

Juan Elías Pérez partner and COO of Grupo GNP was named President of IDEA PyME (SMEs business forum) and Director of IDEA (the largest business forum in Argentina), as well as President of IAEF Joven (finance forum for young executives).

Grupo GNP is still a small firm that has an appetite for growth, and that developed its own culture with strong influence of the culture that the partners appreciated at Andersen. This is reflected in the meritocratic career-to-partner system, and the commitment and the ability to respond. Grupo GNP managed to create a great people-focused culture.

The firm stands out in the market for its focus on business and results and provides comprehensive fiscal solutions, according to the needs of each industry.

The company services lines are:

Tax Planning

Tax Audits

Tax Legal Services

Local and International Consulting Services

Business Process Outsourcing (BPO)

Transfer Pricing

Due Diligence

Market Studies

Family Office


Working closely with clients, Grupo GNP develops the best Fiscal Strategies to power businesses and safeguard estates. This is the main aspect that distinguishes Grupo GNP from its competitors. The firm provides not only technical tax assistance but also a business approach that provides clients with the best tax strategies that optimize the tax burden.

Grupo GNP specializes in corporations (local and international companies established in Argentina), but also have work plans specially designed for family businesses.

The philosophy is to boost clients’ profitability by optimizing their tax burden in a legal way. Firm’s header phrase is that you can’t change tax law, but you can change the business.

GRUPO GNP keeps on receiving international recognition and awards and strengthening its position as a key provider of Tax and Business Consulting Services. These achievements are only possible thanks to its qualified team of professionals and their sustained commitment providing high-quality tax and business services.

On September 19 of 2019, during a ceremony held in New York City, ITR - Euromoney, granted to the firm the award “ARGENTINA TAX COMPLIANCE AND REPORTING FIRM OF THE YEAR".

Among firms of more than 20 countries in North, South and Central America it has been also nominated for a seventh consecutive year by ITR – Euromeney, in the shortlist for the following categories:





And during the last years the firm have received the following local & international awards:

“Business Institutional Excellence", awarded by IDEA - 2016.

“Argentina Best Tax Firm” awarded by International Tax Review – 2015.

“Argentina Transfer Pricing Firm of the Year” awarded by ITR 2015.

“Best Tax Firm, Argentina” - World Finance Legal Awards – 2013/15.

“Argentina – Tax Law Firm of the Year” – ACQ – Global Awards – from 2013 to 2019.

“Argentina – Transfer Pricing Firm of the Year” – ACQ – Global Awards – 2017.

“Argentina – Tax Firm of the Year” – ACQ – Global Awards – 2014 to 2019.

Guillermo N. Pérez: “Best Tax Consultant, Argentina” - World Finance Legal Awards – 2013/15 and “Argentina – Tax Consultant of the Year” ACQ – Global Awards – 2013 to 2019.

“Special Mention” Award for having participated in the “Business Institutional Excellence Award " by IDEA - 2012.


GRUPO GNP among the 100 Outstanding Companies for its Global Performance during 2013 – awarded by World Finance Legal Awards - 2013.

Best employers in Argentina – Apertura Magazine 2013/14/15/16/17.

Mentioned in CEO Profile as most important corporate leaders in Argentina. Apertura Magazine 2013/14/15/16/17.

Mentioned in the special annual supplement “Who’s Who Argentina”- Business Newspaper “El Cronista” 2013/14/15/16/17

"Vela" Award - 2014 and "Hexagon" Award - 2015 to GRUPO GNP for their contribution to the institution. Awarded by IDEA

"Remo" Award to Juan Elias Perez Bay – Awarded by IDEA 2014 to 2018 for his contribution to the institution.

As the title of the article says, Grupo GNP is a professional firm with appetite for growth and it is achieving all the goals and earning a leading place in the market.