Ontier has appointed Matías Kunstmann as the partner in charge of the Tax practice at its Chile office. With this move, the firm strengthens its tax advisory capabilities in the country and consolidates a practice focused on supporting both local and international clients with their operations, investments, and tax needs in the Chilean market.
“The addition of Matías is another step in our strategy to strengthen Ontier’s capabilities in key markets, and to do so with professionals who possess in-depth local knowledge, recognized experience, and a clear international vision. Chile plays a significant role within our network, and having a robust tax practice allows us to provide a more comprehensive response to local and international clients operating in, from, and to Chile. This combination of local specialization and inter-office coordination is an essential part of our model,” stated Javier Muñoz, International Director of Ontier.
For his part, Javier Edwards, managing partner of Ontier Chile, noted that “the integration of a professional like Matías Kunstmann into the team generates strong synergies with the other areas of the firm at the local and international level, allowing us to provide legal advisory services with the desired strength and consistency.”
More from Matías Kunstmann
He has over 25 years of experience in tax matters and much of his career has focused on tax consulting for companies and individuals, tax compliance and representation of taxpayers before the Internal Revenue Service (SII), with special dedication to business groups, family businesses and high-net-worth individuals.
Before joining Ontier, Kunstmann was a founding partner of SCK Consultores / Kunstmann Abogados and worked at KPMG Chile, EY, and Arthur Andersen – Langton Clarke. This experience complements his legal training from the University of Chile and an LLM from the University of Toronto, specializing in tax. He has also advised companies and boards of directors on matters related to white-collar crime, tax policy, and compliance standards.
The development of the Tax practice in Chile is also closely linked to the growth of other areas where the tax dimension plays an increasingly important role, including Corporate, Financial, and M&A. In this way, the Tax practice will work in coordination with the other practices at Ontier Chile and with the firm’s various offices, supporting clients both in structuring their transactions and in managing their tax needs.
With this appointment, Ontier adds six new partners in 2026 across various offices in Latin America, Spain, and the Middle East, as part of its international growth strategy. The development of the Tax practice in Chile will also allow the firm to advise companies served by other offices, integrating local and international capabilities under a single service model.
