Guyer & Regules

Legal Services | Uruguay
tel: +598 2902 1515 | fax: +598 2902 5454
Plaza Independencia 811 | Montevideo | 11100 | Uruguay

Main Contacts


Montevideo, Uruguay


Guyer & Regules is proud to be considered Uruguay's blue chip firm and first choice for international and domestic legal, accounting and tax work. Such a reputation is grounded on the firm's solid team of internationally trained professionals and the largest group of the most experienced partners in the country, who have become the clients' trusted advisers through daily service excellence.

Guyer & Regules is the first Uruguayan firm to have been recognized as "Latin America Law firm of the Year", "Uruguayan Law Firm of the Year" for three consecutive years and to have received the "Client Service Award" by Chambers & Partners. The firm has also been recognized as 'Uruguay Tax Firm of the Year' by International Tax Review ' Euromoney for the last three consecutive years.

Accounting and Tax: The accounting department is chosen by many multinational corporations for the outsourcing of their local and international work. The firm also has one of the strongest teams in international tax planning with highly personalized services.

Aviation: The firm has vast experience in aviation matters and advises many international carriers on issues related to: aeronautical permits; claims; financing; and regulations.

Banking and Finance: Competitors acknowledge the firm's active role in the banking and finance market as a result of its loyal clientele and dominating presence in the majority of regional transactions. The firm advises on: investment funds; issuance of preferred shares through alternative dispute resolution; public work trust structures; syndicated loans; U.S. privately placed securities; and venture capital structures.

Corporate, Mergers and Acquisitions: The firm has overseen equity investments and acquisitions, including the largest mergers and acquisitions deal done in Uruguay, as well as mergers of banks and pension fund administrators, spin-offs and transfers of assets. The firm has also acted on several privatization and utility concession proceedings.

Energy: The firm has advised the government on oil regulation issues, assisted in the search of a strategic partner for the state-owned oil company and advised Tullow (UK), British Gas (UK) and Total (France) in relation to the search for oil in Uruguay. It also facilitated the implementation of a natural gas pipeline, has advised foreign businesses trading electricity with the state-owned power company and in the development of wind parks and biomass power plants.

Labor: The department excels in both advisory and litigious labor matters. It has represented all of the Uruguayan financial entities in the collective bargaining agreement negotiations with the banking union and the government and recently advised the Uruguayan Chamber of Pharmaceutical Laboratories

Litigation: Litigation is a landmark of Guyer & Regules' practice. The firm's many prominent litigators specialize in complex litigation and arbitration, generally involving high-profile cases.

Real Estate: As the largest and most experienced in the country, the real estate department has a very strong presence in agribusiness and forestry investments and is extremely active in tourism and residential developments.

Telecommunications: The firm has advised Telefonica since its arrival in Uruguay as well as other telecom entities such as: call centers; cellular and data transmission services; long distance carriers; satellite and teleport operators.

Year this Office was Established: 1911
Lawyers Worldwide: 150


Areas of Practice

Representative Clients



Uruguay: Antitrust Premerger Control in Full Force

The new prior authorization regime for economic concentrations in Uruguay passed by Congress in 2019 is in force since April 2020 and therefore premerger control is since mandatory for a large set of transactions involving Uruguay. The Uruguayan Antitrust Commission has recently published the form for market participants to request antitrust authorization. Other regulators with antitrust jurisdiction are still to publish their forms but they will probably draw inspiration from the Antitrust Commission form...

Special Report: Coronavirus and its Effects on Contracts

The spread of the COVID-19 virus (“Coronavirus”) worldwide has had, in addition to the enormous impact on the health of the population, a notorious effect on the economic life of individuals and companies, and also on the execution of contracts. It affects the internal processes of a company, the production or services on which it depends to subsist, and even makes it difficult to fulfill the obligations assumed with third parties. These situations are going to be invoked as events of "force majeure" or "strange cause", which may justify eventual breaches or delays, and exonerate the debtor from liability...

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New developments in Oil & Gas

Guyer & Regules helped French oil explorer Total in the sale of 15 per cent stake in block 14, which is in the Pelotas basin, to Norwegian state oil company Statoil. The sale leaves Total with a 50 per cent stake in block 14, while the other stakeholder, ExxonMobil holds a 35 per cent interest. Block 14 was awarded to Total in 2012. Drilling at the offshore block – which is thought to have the deepest oil reservoir in the world – is expected to start within the first half of this year. The closing of Statoil’s acquisition is pending government approval...

New developments in Eolic energy

Guyer & Regules has helped wind farm owner Rouar obtain US$54 million in project financing from the Development Bank of Latin America (CAF). Rouar is a joint venture between Uruguay’s state-run utilities company, UTE, and Brazilian counterpart Eletrobras. Guyer & Regules also advised UTE for the deal. The joint venture owns the 64-megawatt Rozendo Mendoza wind farm in Tarariras, southern Uruguay. Uruguay has prioritised renewable energy development in recent years. The financing was disbursed in the same month the government revealed that renewables now account for 95 per cent of its electricity sources...

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