About us

3.0 Lawyers and Tax Advisers has highly qualified staff with expertise in commercial law, corporate law, tax law, new technologies and litigations.

Experience has shown us that each case has different legal implications. Consequently, the work methodology employed by 3.0 Lawyers and Tax Advisers includes a multidisciplinary analysis of all matters entrusted to us.
Bridging gaps, working in “partnership” and a detailed knowledge of our clients allow us to provide efficient solutions that satisfy their legal needs.
We have an optimistic vision of a better future, and we believe in cooperation and collaboration. For that reason 3.0 Lawyers and Tax Advisers allocates 0.7% of its annual turnover to social aid.


Esther Barneda

Commercial, Real Estate, M&A, New Technologies and Intellectual Property.

Laura Lamas

Tax Law, M&A, Family Business, Successions

Mercedes Martí

Commercial, Conflicts and Litigations, Insolvency

Sergio López

Conflicts and Litigations, Insolvency, Real Estate

Andrea Valdivieso

Tax Law, Successions, Tax and Accounting Management

Eva Muñoz

New Technologies and Intellectual Property, Data Protection

Montse Pastor

Tax and Accounting Management



E-commerce or online selling, which consists of the sale of goods and services over the Internet, has experienced extraordinary growth in recent years. Currently, one out of every ten purchases in Europe is made online, and this trend will continue.

Calendario de Renta y Patrimonio 2017

Plazos de presentación de las declaraciones de Renta y Patrimonio: Desde el 4 de abril hasta el 2 de julio de 2018 en caso de presentación telemática de declaraciones (por Internet). Si se domicilia el pago, el plazo finaliza el 27 de junio de 2018 (con cargo el 2 de...
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