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Key contacts
Founding Partner, Chairperson and CEO: Guillermo N. Pérez
Partner in charge of the Business, Outsourcing and Transfer Pricing Division: Juan Elías Pérez Bay
Tax Division Partner in charge of the Indirect and Corporate Tax Division: Sebastián Mancuso
Key practice areas
General corporate tax
Indirect tax
Tax
Tax controversy
Transactional tax
Transfer pricing
Firm overview

Grupo GNP is a professional firm specialized in tax and business consulting services founded and led by its Chairperson and CEO, Guillermo N. Perez.

Its team of carefully recruited and highly-qualified professionals engages in designing the best tax strategies allowing clients to maximize their business results with quick responses tailored to each need.

The Firm delivers a wide range of tax services working closely with clients, understanding their way of doing business and transforming consulting and compliance of tax regulations into strategies and business opportunities. 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 offers international and local tax solutions: fiscal planning and tax optimization, general tax business consulting, tax legal services, tax compliance, transfer pricing, and business process outsourcing for local and international companies established in Argentina.

The firm specializes in local and international corporations, but also have work plans specially designed for SMEs and companies shareholders.

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.

Grupo GNP - a business firm expert in taxes

Services lines

Tax Services

Business Services

  • Tax compliance
  • Outsourcing Audit
  • Business Consulting
  • Transfer Pricing
  • Special Services for family owned companies
Address:
Arenales 1618
Buenos Aires, 1061
Tel:+54 1152184600 Email:Contact Us Web Address:http://www.grupognp.com
2026 Edition
General corporate tax
Tier 2
36 firms ranked
View full list

Tier 1

Bruchou & Funes de Rioja
6 practice areas
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Deloitte & Co
6 practice areas
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Estudio O’Farrell
5 practice areas
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Marval O'Farrell & Mairal
6 practice areas
View profile
Pistrelli Henry Martin & Asociados - EY
5 practice areas
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Price Waterhouse & Co
5 practice areas
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Pérez Alati Grondona Benites & Arntsen
6 practice areas
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Rosso Alba & Rouges Abogados
6 practice areas
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Tier 2

Baker McKenzie
6 practice areas
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Beccar Varela
2 practice areas
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Bomchil
6 practice areas
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Grupo GNP
6 practice areas
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KPMG Argentina
4 practice areas
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Mitrani Caballero
5 practice areas
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Tier 3

Asorey & Navarrine
3 practice areas
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Brons & Salas
5 practice areas
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Bulit Goñi | Lema Abogados
4 practice areas
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Laiún Fernández Sabella & Smudt
3 practice areas
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Peña Freytes & Asociados
2 practice areas
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Salaberren & López-Sansón Abogados
5 practice areas
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Tavarone Rovelli Salim & Miani
5 practice areas
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Tier 4

Abeledo Gottheil Abogados
4 practice areas
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Allende & Brea
2 practice areas
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Andersen
6 practice areas
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Beretta Godoy
2 practice areas
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Luna Requena Abogados Tributaristas
4 practice areas
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Tier 5

Cainzos Fernández & Premrou
2 practice areas
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D’Alessandro Tax
5 practice areas
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JP O’Farrell Abogados
2 practice areas
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MBP Partners
5 practice areas
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TCA Tanoira Cassagne
3 practice areas
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Other notable

Alfaro Abogados
2 practice areas
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ECIJA
2 practice areas
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Estudio Rinci & Asociados
3 practice areas
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FLJ Consultores
5 practice areas
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Passarella Abogados
5 practice areas
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Indirect tax
Tier 2
14 firms ranked
View full list

Tier 1

Bruchou & Funes de Rioja
6 practice areas
View profile
Deloitte & Co
6 practice areas
View profile
Marval O'Farrell & Mairal
6 practice areas
View profile
Pistrelli Henry Martin & Asociados - EY
5 practice areas
View profile
Price Waterhouse & Co
5 practice areas
View profile

Tier 2

Bomchil
6 practice areas
View profile
Bulit Goñi | Lema Abogados
4 practice areas
View profile
Estudio O’Farrell
5 practice areas
View profile
Grupo GNP
6 practice areas
View full profile
Luna Requena Abogados Tributaristas
4 practice areas
View profile
Mitrani Caballero
5 practice areas
View profile
Pérez Alati Grondona Benites & Arntsen
6 practice areas
View profile
Rosso Alba & Rouges Abogados
6 practice areas
View profile

Other notable

FLJ Consultores
5 practice areas
View profile
Transactional tax
Tier 3
16 firms ranked
View full list

Tier 1

Bruchou & Funes de Rioja
6 practice areas
View profile
Deloitte & Co
6 practice areas
View profile
Marval O'Farrell & Mairal
6 practice areas
View profile
Pistrelli Henry Martin & Asociados - EY
5 practice areas
View profile
Price Waterhouse & Co
5 practice areas
View profile
Pérez Alati Grondona Benites & Arntsen
6 practice areas
View profile

Tier 2

Baker McKenzie
6 practice areas
View profile
Bomchil
6 practice areas
View profile
KPMG Argentina
4 practice areas
View profile
MHR Martinez de Hoz & Rueda
3 practice areas
View profile
Mitrani Caballero
5 practice areas
View profile
Rosso Alba & Rouges Abogados
6 practice areas
View profile

Tier 3

Abeledo Gottheil Abogados
4 practice areas
View profile
Grupo GNP
6 practice areas
View full profile
Salaberren & López-Sansón Abogados
5 practice areas
View profile
Tavarone Rovelli Salim & Miani
5 practice areas
View profile
Transfer pricing
Tier 2
20 firms ranked
View full list

Tier 1

Andersen
6 practice areas
View profile
Bruchou & Funes de Rioja
6 practice areas
View profile
Deloitte & Co
6 practice areas
View profile
Laiún Fernández Sabella & Smudt
3 practice areas
View profile
Pistrelli Henry Martin & Asociados - EY
5 practice areas
View profile
Price Waterhouse & Co
5 practice areas
View profile
Rosso Alba & Rouges Abogados
6 practice areas
View profile

Tier 2

Baker McKenzie
6 practice areas
View profile
Estudio O’Farrell
5 practice areas
View profile
Grupo GNP
6 practice areas
View full profile
KPMG Argentina
4 practice areas
View profile
Marval O'Farrell & Mairal
6 practice areas
View profile

Tier 3

BaseFirma
3 practice areas
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Bomchil
6 practice areas
View profile
Litvin Marzorati Legales
3 practice areas
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Luna Requena Abogados Tributaristas
4 practice areas
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Pérez Alati Grondona Benites & Arntsen
6 practice areas
View profile

Other notable

FLJ Consultores
5 practice areas
View profile
Russell Bedford Argentina
3 practice areas
View profile
TPC Group
3 practice areas
View profile
Overview

Grupo GNP was founded in 2006 by Guillermo N. Perez, who is backed by over 40 years of experience. With a team of 30+ professionals, Grupo GNP provides a full array of tax services, including tax strategy, audit services, as well as national and international consulting. The firm is known for its versatility and personalized expertise for each client, while also maintaining strong relationships with key business organizations and the public sector.  

Grupo GNP advised Pollux, Argentina's first Fintech platform on tax structuring and compliance, efficiently navigating regulatory frameworks. This was crucial given the evolving nature of the tax environment surrounding the fintech industry in Argentina. Another one of Grupo GNP’s clients is Villaggio Belvedere, for whom developed comprehensive tax efficient structures for real estate developers to manage tax liabilities. 

Tax manager Facundo Alves left the firm in 2024. The team welcomed new tax seniors: Giselle Turco, Sol Cardozo, Marlene Dietrich, and Ignacio Fernández.  

Client feedback

“Along with profound insight on taxing, they provide a swift, personalized and accurate response to any inquire.” 

“The reliability of the work, safety, and punctuality stand out, as well as good planning.” 

Linked Reviews
Tax

Grupo GNP is an organization founded in 2006, consisting of approximately 30 people, under the leadership of Guillermo N. Perez. The company service lines include, but are not limited to, tax strategy, fiscal audits, tax legal services, local and international consulting, business process outsourcing (BPO), and transfer pricing. The firm specializes in advising corporations, however, can service family businesses. 

Among many clients and matters serviced this research period, Grupo GNP worked to advise a client in updating its accumulated tax loss due to inflationThe importance of the work done is linked to the possibility of uniformly applying the tax inflation adjustment to all matters related to income tax, by preventing the inflation that exists in Argentina from devaluing the tax losses.

Tax seniors Alejandro Peralta and Jimena Pazos both departed to local companiesAdditionally transfer pricing senior Emanuel Gómez departed to one of the Big FourHowever, the firm welcomed two tax managers, Ezequiel Barbalaco and Leandro Ameri, and two tax seniors Juliana Pattaro Ezequiel Cano all from local firms.

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