Expert in taxation, mainly advising private clients on their wealth management and estate planning, and international clients on their Spanish investments and transactions.

Sonia Velasco’s crossborder practice involves advising private clients on their investments including real estate investments, estate planning, family governance and business succession, executive compensation and pension plans. She is well versed in vehicles such as trusts, which do not have a precise counterpart in Spanish law.

She also often advises private equities, venture-capital and strategic investors, and family offices on their investments in startups and scaleups.

She worked at the Cuatrecasas New York office for three years, enabling her to work on many crossborder matters involving the United States, Canada and Latin America.

She is an active member of the American Bar Association and of the International Bar Association, where she chaired the Tax Committee from 2013 to 2015. She is also a member of the Barcelona Bar Association and of the Society of Trust and Estate Practitioners.

She lectures on taxation at ESADE Business & Law School and speaks regularly at the International Bar Association and other international forums.

She regularly publishes articles in specialized journals and in leading Spanish newspapers.


  • Promociona Program, Executive Leadership Development
    ESADE Business and Law School, 2020

    Master in Tax Consultancy and Management
    ESADE Business and Law School, 1995

    Master in Business Law
    Universitat Pompeu Fabra, Barcelona, 1994

    Bachelor of Laws
    Universitat de Barcelona, 1992

Directory Mentions

Recommended lawyer
Chambers & Partners (Global and Europe), Chambers HNW, Latin Lawyer, Leaders League, Expert Guides, The Best of the Best Women in Business Law, Legal Week, Citywealth, Who’s Who Legal and Best Lawyers in Family Law, Tax, Private Client & Wealth Management and Venture Capital 

Women in Tax Leader
International Tax Review (2017 to 2024)

Best Lawyer in Tax Dispute Resolution
Europe Women in Business Law Awards (2018, 2017, 2016)

Lawyer of the Year
Who’s Who Legal in Corporate Tax (2014)