We are a Tax + Law Firm based in Portugal

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An honest and transparent approach to Tax, Family and Corporate Law that focuses on pragmatic solutions.

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Recognized Among the Best

Passion for simplifying the complex, with a focus on what matters.

Our services

001

Tax

Comprehensive tax solutions tailored to your needs, from compliance to (fair taxation) strategic planning.

002

Family

Thoughtful estate and inheritance planning to protect your legacy and loved ones.

003

Corporate

Expert guidance on incorporation, M&A, and corporate governance for a seamless business journey.

We help our clients reach their goals

Let´s Connect

At Castilho, our focus is clear: Tax, Family, and Companies.

We aim to deliver legal solutions with honesty, transparency, and an approachable style that sets us apart.

Let´s Connect

Castilho is a new milestone in legal excellence.

Our team’s goal is to simplify the complex and guide our clients with the clarity and confidence they seek.

Our Blog

Tax

Feb 2, 2026

Can You Trust Your Trust?

Trusts in Portugal: smart planning if structured right, costly if you get control wrong.

Tax

Dec 17, 2025

Exit Tax in Portugal: The Myth, the Reality, and the Four Traps People Miss

Portugal has no general exit tax — but four specific situations can still trigger tax when you leave.

Corporate

Dec 2, 2025

Smart Governance Without the Red Tape: The Rise of Ad-Hoc Boards

A practical framework for creating flexible, non-statutory governance bodies that sharpen strategy without shifting control.

A New Era in Legal Services

With over 15 years of experience in Big 4 firms, government, and leading law firms, I’m proud to introduce Castilho. This milestone is the culmination of years of hard work, learning, and striving to provide top-tier legal services.

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Accolades from

I was very impressed by the vast amount of knowledge Luís possessed, both in terms of theoretical knowledge of the Portuguese Fiscal Law.

Leonardo Bertolini Zichy Thyssen

IE Business School

Luis is really great expert in taxes. He is fast, furious and totally client oriented. I highly recommend Luis for all who need to clarify tax strategy in Portugal.

Anton Voroniuk

SaaS Growth & GenAI Expert

I am eternally grateful to Luis and look forward to working with Luis for many years to come.

Kathryn Murphy

Global Director of Partnerships at World Connect, Inc.

They say "Your network is your Net worth". Well, consider yourself a rich man if Luis is in any way part of your network.

Ella Grobler

Property Investor and Developer at Rouge Homes Ltd

Luis is knowledgeable, sharp and a pleasure to work with.

Chris Gourlay

Strategy & Innovation Consultant | Founder of Spacehive

He has been extraordinarily responsive and impeccably detailed while conveying the many laws and procedures in an easily understandable manner.

John Sumners

Journalist, Author

Luis Castilho is an extremely efficient, responsive, highly qualified, professional that I have had the pleasure to work with.

Melinda Given

Senior Medical Science Liaison

Luis provides a very professional service, his fees are appropriate and he goes out of his way to assist.

Peter Lunning

Independent consultant

Simples, Rápido e Bastante Profissional.

Hugo Espada

Nova Frigo S.r. l. Spain & Portugal Sales Manager

Luis is the best tax law professional that I have worked with.

Roger Graves

CTO at Cloverpop

Quick, smart, practical.

Maxim Sokiran

Legal and PR Expert

Luís is an outstanding Tax Lawyer, reliable and fully dedicated to his clients. I highly recommend Luís.

David Vicente

DVM, MVSc, PhD, MRCVS, Assistant Professor

He provides high level, timely and outstandingly customer centered tax advices.

Francesco Bax

Executive Leader

Luís Castihlo is hands down one of the best lawyers and tax experts I've ever worked with!

Florian Kaiser

CEO at Inbox Marketing

Working with Luis has been an exemplary experience in navigating Portuguese tax complexities.

Eliot Raymond

Product Lead @ A.Team | Marketing | Growth

Luis Castilho is an excellent tax lawyer. His speed of delivery, deep insights, and presentation skills are truly impressive.

Oleksandr Pysaruk

CEO at Raiffeisen Bank

Ultimately I was able to confidently make an informed tax decision. I have recommended Luis to several friends and co-workers and will definitely continue to do.

Daniel Lourenço

Sr. Director

Honest, highly qualified in Portuguese tax law, deadline maniac and a great guy. Pleasure to work with. Highly recommended.

Maxim Shkolnick

General Partner @ Focus Estate Fund

Integridade e foco em ajudar o cliente insuperável.

André Rodrigues Lopes

General Manager at Datahouse Portugal

I rarely write reviews, but I felt compelled to do this one. Luís Castilho is an excellent professional, very responsive, knowledgeable and thoughtful.