Investments
- Offer the best options for structuring investments in Ecuador and help our clients access available tax incentives.
- Guide our clients through the negotiation and execution of investment agreements, delegated management contracts (public-private partnerships) and similar contracts, ensuring access to the tax incentives on offer.
Transactions
- Offer tax advice on cross-border issues, mergers and acquisitions, project financing and transactions in the capital market.
- Transfer Pricing and International Taxation-Assess related-party and intra-group arrangements to verify compliance with transfer pricing regime.
- Advise on international taxation matters, application of doubletaxation agreements, CFC Rules, etc.
Representation in Administrative and Judicial Proceedings
- Prepare and defend our clients in administrative claims involving tax and customs authorities.
- File claims for refunds of taxes, tariffs, surcharges and contributions.
- Advocate for our clients in tax and customs lawsuits, including appeals for cassation and constitutional actions.
Tax Compliance
- Verify tax compliance, evaluate risks and mitigation options and perform tax due diligence.
- Advise clients on implementing accounting and tax policies and tools to comply with fiscal transparency, tax due diligence and good corporate governance principles.
- Help implement accounting standards and IFRS.
Private Clients and Estate Planning
Design efficient mechanisms for family tax planning and estate planning.
Chambers Latin America 2025
"Pérez Bustamante & Ponce are the most experienced firm in the country in relation to tax. It is a challenging area and very complicated, but they handle it well."
Chambers Latin America 2024
“The team demonstrates experience and knowledge in tax matters related to Ecuador. We always receive a prompt response with reliability.”
The legal 500 2024
"They show that they are aware of our needs and are ready to accompany us. Their work shows the passion they have for what they do and for the service to the client, two characteristics that make them worthy of our trust and wide recommendation."
Latin Lawyer 250 2024
Pérez Bustamante has a multifaceted tax department with a wide selection of impressive lawyers supported by financial professionals. The team shines in non-contentious and contentious work, while tax lawyers regularly feature on M&A deals and labour and regulatory matters, the team is also active in tax disputes, defending clients in claims filed against them. The group also supports clients in negotiating settlements with authorities. The firm has diversified its tax offering in recent years and now also provides wealth management services.
Ecuador Tax Firm of the Year 2021, 2019
International Tax Review (ITR)
Chambers Latin America 2021
Band 1
What the team is known for?
Highly acclaimed practice group fielding a sizeable team of tax specialists. Acts as counsel to leading clients on a wide range of tax mandates including tax structuring for corporate transactions, tax planning and the tax components of large-scale infrastructure projects. Boasts a strong track record representing clients in contentious tax matters such as administrative litigation and judicial actions. Provides additional abilities assisting individuals with estate planning and wealth management.
Strengths
A client praises the firm for being “one of the most prestigious law firms in the country.” They go on to add: “The partners at the firm are local experts and eminent practitioners in the tax arena,” further describing them as “proactive, intelligent and practical in their advice.” Another interviewee enthuses: “They have a diverse and high-quality team with a good global vision and excellent knowledge of the new tax regulations in the country.”
Chambers Latin America 2020
What the team is known for?
Stellar department handling the full spectrum of tax matters. Regularly advises on the tax component of large-scale infrastructure projects. Regularly provides counsel on international tax strategies, lending expertise to the firm’s private client practice.
Strengths
Clients are quick to voice their appreciation for the firm, with one enthusing: “The team is focused on providing support to the client, looking for solutions or alternatives when a proposed transaction is not tax-efficient.”
Another client adds: “They provide prompt responses that are of a good quality.”
Chambers Latin America 2019
What the team is known for?
Acclaimed full-service firm experienced in providing tax services to a wide array of clients across the food and beverage, aviation and energy and natural resources industries. Frequently assists local and international actors with the tax structuring for project finance deals, as well as transfer pricing, double taxation treaties, and sector-related litigation.
Strengths
Sources emphasise the team’s broad expertise, citing: “They handle all tax areas, including litigation and consultations – it’s a very complete service.” A client goes on to characterise the team’s tax practice as one of “prestige, experience, and integrity.”
Latin Lawyer 2018
The firm has a strong reputation for tax. The large team of lawyers, of which three senior associates were promoted to director recently, is supported by a group of financial professionals. The firm has helped clients in the hygiene, automotive and cement industries make income, value added and judicial tax claims. Tax lawyers also regularly feature on M&A deals.
Key partners
Juan Gabriel Reyes is prominent in tax, and valued by clients for his broad knowledge. He is joined by María Rosa Guerra-Durán, who has extensive experience advising companies in the energy sector.
The Legal 500 2018
Pérez Bustamante & Ponce’s ‘quick’ and ‘service-oriented’ tax unit combines accountancy and finance capability in conjunction with its tax offering to permit fully comprehensive service provision. It handles tax and financial planning, tax outsourcing, administrative and judicial tax proceedings, transfer pricing, wealth planning and customs matters, as well as tax advisory and auditing, and has particular strength in M&A-related issues.
Related
Team
Partner
Juan Gabriel Reyes-Varea
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Partner
María Rosa Guerra-Durán
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Partner
Carmen Simone-Lasso
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