What Guyer & Regules does

Guyer & Regules is a Uruguayan full-service law and accounting firm founded in 1911 by Max Guyer and Dardo Regules, headquartered in Montevideo with additional offices in Punta del Este, José Ignacio, and the WTC Free Zone. The firm operates across 37 practice areas spanning Corporate Law, M&A, Banking & Finance, Tax, Capital Markets, Arbitration, Litigation, Labor, Real Estate, Oil & Gas, Renewable Energy, and Free Zone Services, employing between 251 and 500 professionals. It serves enterprise and institutional clients including 38 of Latin America's 100 largest companies and the majority of banks operating in Uruguay — among them Itaú, HSBC, Goldman Sachs, BBVA, BNP Paribas, JPMorgan, Deutsche Bank, Morgan Stanley, Citibank, Bank of America, UBS, and Moody's — and additionally serves individual clients through High Net Worth residency and tax advisory services.

The firm is a privately-held partnership with no external investors, led by Co-Chairs Nicolás Piaggio (lawyer) and Nicolás Juan (certified public accountant) under a dual lawyer/CPA partnership model unusual in the market. Revenue is generated through professional service fees on a per-engagement or retainer basis across practice areas, with go-to-market driven by partner-led business development, top-tier international directory rankings (LACCA #1 in Uruguay since 2012; Chambers Uruguay Law Firm of the Year for nine consecutive years), and long-standing enterprise relationships. The firm maintains exclusive Uruguayan membership in Lex Mundi and six additional international legal networks (World Law Group, World Services Group, Interlaw, Club de Abogados, The Interlex Group, RIELA) to deliver cross-border capacity.

The firm has expanded its service surface beyond traditional legal work into sustainability consulting (via partnership with Gemma), corporate diversity training (co-created 'Blind Acting' with Grupo de Teatro Players), and ESG reporting — becoming the first Uruguayan law firm to publish a sustainability report covering 2024 data. The firm positions itself as 'FUTURE READY' with content referencing AI, blockchain, fintech, and digital transformation, though no proprietary AI/ML products or platforms are disclosed. Marketing is driven by a bilingual (English/Spanish) website, thought-leadership publications, and international directory recognition.

Name

Guyer & Regules

Legal name

Guyer & Regules

Website

https://guyer.com.uy

Company type

Private

Founded year

1911

Operating status

Operating

Headcount range

251–500 employees

Short description

Guyer & Regules is a Uruguayan full-service law and accounting firm founded in 1911, advising the majority of banks operating in Uruguay and 38 of Latin America's 100 largest companies across 37 practice areas from offices in Montevideo, Punta del Este, and José Ignacio.

Ownership category

akta.pro rank

Headquarters

HQ city

Montevideo

HQ country

Uruguay

HQ region

Latin America

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure, Others

Revenue model

1. Legal Advisory Services: Guyer & Regules generates revenue through the provision of professional legal services across 37 practice areas, including corporate law, banking & finance, M&A, tax, litigation, arbitration, labor, real estate, and more. Revenue is derived from fees for legal advisory, transaction execution, litigation representation, and related professional services to corporate and institutional clients.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels7 records

Core offering

Guyer & Regules is a full-service Uruguayan law and accounting firm delivering integrated legal, accounting, and tax advisory services across 37 practice areas, including Corporate Law, M&A, Banking & Finance, Capital Markets, Tax, Arbitration, Litigation, Labor, Real Estate, Oil & Gas, Renewable Energy, Fintech, Intellectual Property, and Data Protection. The firm primarily serves banks, large corporates, multinationals, and high-net-worth individuals with operations in or entering Uruguay.

Product overview

Guyer & Regules is a full-service Uruguayan law firm founded in 1911, offering legal services across 37 practice areas. The firm's core offering consists of comprehensive legal advisory services spanning Corporate Law, M&A, Tax Law, Banking & Finance, Capital Markets, Arbitration, Litigation, Labor Law, Real Estate, Oil & Gas, Renewable Energy, Fintech, Intellectual Property, Data Protection, and more. Additionally, the firm offers specialized service offerings including Blind Acting (interactive corporate drama), Sustainability Reporting (first law firm in Uruguay to produce GRI-aligned ESG reports), Pro Bono services, Free Zone administrative services, and Legal Residence & Tax Advisory for high-net-worth individuals. The firm is recognized as a leader in Uruguay and Latin America by Chambers & Partners, Legal 500, Latin Lawyer 250, and International Tax Review.

Differentiator

Problem solved

Functional benefit

Products and services

• Legal Services — 37 Practice Areas
• Free Zone Services
• Legal Residence & Tax Advisory for HNWI
• Blind Acting
• Pro Bono Legal Services
• Sustainability Report (Memoria de Sostenibilidad)

Quantifiable outcome

• Advising 38 of Latin America's 100 largest companies (by revenue) — ranked #1 in Uruguay and in the TOP 10 of Latin America
• +3 more outcomes

Named customers25 records

Segments7 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Nine partnerships are on record, tiered core, flagship and minor.

• World Law GroupcoreStrategic or Co-development Partner · 1 January 1988Founded in 1988, World Law Group is one of the largest and longest-standing networks of leading independent law firms. Composed of 59 leading independent law firms, with approximately 20,000 lawyers serving clients from more than 400 offices in 89 countries.
• Lex MundiflagshipStrategic or Co-development PartnerExclusive member for Uruguay. Lex Mundi is the leading network of independent law firms worldwide with experience in more than 100 countries. As a member, Guyer & Regules provides clients preferential access to more than 21,000 lawyers globally through a single point of contact.
• World Services Group (WSG)coreStrategic or Co-development PartnerWSG is a worldwide non-profit association of professional service providers. Members are leading firms in their sector of specialization with high reputations within their communities. Provides access to global professional services network.
• InterlawcoreStrategic or Co-development PartnerInterlaw is an internationally recognized elite network of independent law firms, composed of more than 7,500 lawyers located in approximately 150 cities worldwide.
• Club de AbogadosminorStrategic or Co-development PartnerClub de Abogados is a network of leading law firms in the Americas and Europe, founded more than 50 years ago. The Latin American section comprises 20 firms, one per country, covering all of Latin America, almost all of Central America, Spain, and Portugal.
• The Interlex GroupminorStrategic or Co-development PartnerThe Interlex Group is an association of leading law firms around the world collaborating to provide a full range of international legal and business services to clients. Has 9,320 lawyers from 49 firms present in 64 countries.
• RIELA (Red Interamericana de Especialistas en Legislación Ambiental)coreStrategic or Co-development PartnerRIELA is a network of independent law firms providing professional information exchange on local and regional environmental law practice and development in the Americas. Guyer & Regules is the sole Uruguayan member and has been active in environmental law since before RIELA's founding.
• Gemma (Sustainability Consultant)minorImplementation/ SI/ Consulting PartnerGemma, a specialized sustainability consultancy, worked with Guyer & Regules to develop its first Sustainability Report (2024), following GRI (Global Reporting Initiative) standards. The engagement was cross-functional, involving the General Management, Sustainability Committee, Compliance, Technical Support, Communication and Marketing, and Accounting teams.
• Grupo de Teatro Players (Blind Acting)minorStrategic or Co-development PartnerGuyer & Regules co-created 'Blind Acting,' an interactive drama experience for corporate diversity training, together with Grupo de Teatro Players. The program aims to create awareness for better human relations development in enterprises.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Regional players

• Brigard Urrutia: Brigard Urrutia is Colombia's largest and most internationally recognized full-service firm, regularly cited in regional rankings alongside Guyer & Regules. It is comparable in positioning as a national champion serving large corporates, but operates in a different Andean geography.

Broad incumbents

• Pinheiro Neto Advogados: Pinheiro Neto is Brazil's flagship full-service firm and a regional powerhouse regularly ranked among Latin America's top legal advisors. It is comparable in breadth and client quality, though materially larger and serving a much deeper corporate market than Uruguay.
• Mattos Filho Advogados: Mattos Filho is one of Brazil's largest and most internationally recognized full-service firms, regularly appearing alongside Guyer & Regules in regional LACCA and Chambers rankings. It reflects the upper-bound of full-service scale in Latin America.
• Cleary Gottlieb Steen & Hamilton: Cleary Gottlieb is a leading international firm with one of the strongest cross-border Latin America practices, frequently competing with top regional firms like Guyer & Regules on sovereign, banking, and M&A matters involving Uruguay and the Southern Cone.
• Baker McKenzie: Baker McKenzie is the world's largest law firm by headcount and operates a deep Latin American practice with offices across the region. It overlaps with Guyer & Regules on cross-border M&A, banking, and project finance mandates but competes from a global, multi-jurisdictional platform rather than a domestic Uruguayan base.

Direct peers

• Bergstein Abogados: Bergstein is a leading Montevideo-based law firm active across corporate, tax, and commercial matters for Uruguayan and international clients. It competes for the same enterprise and HNWI advisory mandates as Guyer & Regules in the domestic market.
• Astesiano Abogados: Astesiano is a long-standing Uruguayan law firm with strong corporate, banking, and litigation capabilities that competes directly with Guyer & Regules for institutional and corporate mandates in Montevideo.
• Ferrere: Ferrere is one of Uruguay's largest and most established full-service law firms and is consistently cited as the primary competitor to Guyer & Regules in the Uruguayan market, serving comparable large corporates, financial institutions, and multinationals with similarly broad practice coverage.
• Marval O'Farrell Mairal: Marval is Argentina's largest full-service law firm and the dominant advisor to banks and large corporates in Buenos Aires. It is the closest analogue to Guyer & Regules in scale, integrated offering, and client roster within the Southern Cone legal market.

Emerging players

• Pérez-Llorca: Pérez-Llorca is a fast-growing Iberian full-service firm that has actively expanded Latin American coverage through lateral hires and alliances. It is comparable to Guyer & Regules as a top-tier national/regional advisor pursuing cross-border mandates, with overlapping finance, energy, and M&A practices.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/guyeryregules
• Facebookfacebook.com/guyeryregules

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Guyer & Regules