Expertise
The Callamus team brings the best of international professional standards, never losing sight of the needs of the client. Our expertise abounds in the fields of tax planning, international banking as well as private wealth advisory.
LEARN ABOUT CALLAMUS
1. Who We are
Callamus is a boutique international tax and corporate advisory firm, serving private clients and businesses operating across borders.
We act as a strategic advisory layer, coordinating tax, corporate, banking, and compliance matters through a trusted international network, with a focus on protection, continuity, and long-term stewardship.
2. What We Do
International Tax & Corporate Advisory
We advise on cross-border structures designed to align with tax residence, regulatory obligations, and long-term objectives.
3. How we work
Holistic & Coordinated
Rather than fragmented services, Callamus provides a single point of oversight across jurisdictions and disciplines.
4. Who we serve
Internationally Active Individuals & Businesses
We advise internationally active citizens and a diverse array of modern families from around the world.
OUR HOLLISTIC APPROACH
At Callamus, we believe that effective international structuring is not about aggressive optimisation, but about foresight, balance, and control. Every structure must withstand regulatory scrutiny, adapt to change, and serve both present needs and future generations.
We go beyond traditional wealth oversight by offering an integrated suite of services that includes strategic wealth planning, international tax structuring, compliance, estate and succession planning, philanthropy, family governance, and bespoke lifestyle support.
Our goal is to ensure that every aspect of a family’s global affairs is seamlessly coordinated and aligned with their long-term objectives, values, and legacy.
By uniting legal, tax, and personal expertise under one trusted platform, Callamus provides clarity, continuity, and peace of mind—empowering families and global citizens to preserve, protect, and grow their wealth across generations and borders.
Performance
Callamus stands alone as a results oriented company delivering quantifiable performance.
Integrity
Callamus proudly adheres to a strict discretionary policy ensuring complete confidentiality to all our clients. As an independent advisory firm Callamus commits to the client free of undue influences and alliances.
OUR TEAM
[01]
Dimitrios Tourikis
LLM (c), MSc, TEP | Founder |
Certified Tax Accountant | Global Tax & Wealth Adviser
Dimitrios Tourikis was born and raised in Piraeus. He earned his first degree in Accounting and Finance at Oxford Brookes University, followed by graduate studies in International Relations at the University of East London in the United Kingdom. He is currently pursuing a Master of Laws (LL.M.) at the University of East London. He has over twenty-five years of extensive experience in the financial services sector, with a focus on strategic business planning for corporate clients. He has held various positions, including: Stockbroker at Merrill Lynch in the U.S., Financial Auditor for the Further Education Development Agency in London, as well as Financial Analyst at Boston Finance, and Assistant Stockbroker at the former Emporiki Bank (Credit Agricole Group) in Athens. Dimitrios is a Certified Tax Accountant, a member of STEP (Society of Trust & Estate Practitioners) U.K., and a member of the Economic Chamber of Greece. In 2009, he founded Callamus, where he specializes in international tax and estate planning. In addition, Dimitrios is actively engaged in the field of corporate diplomacy and in cross-border business negotiations.
[02]
Helen Varvaritis
BA, MA, MIB | Co-Founder
With a broad and varied professional career spanning senior management and marketing, Helen brings her personal passion for business to Callamus. Helen graduated from the University of Sydney with a Bachelor of Arts followed by post-graduate studies and a Master of Arts.
[03]
Magda Tsantou
BEcon | Head of Key Accounts | Greece Offices
Magda Tsantou is a graduate of the Department of Economics at the Athens University of Economics and Business (former ASOEE). She began her career in marketing and then in the public sector, and in 2019 she joined Callamus as a corporate administrator.
[04]
Veronika Vilks
BIB | Executive Assistant | Greece Offices
Originally from Russia, Veronika holds a Bachelor’s degree in International Business from Metropolitan University Prague. Fluent in Russian, English, Czech and French. She joined the team in 2026 as Executive Assistant to the Founder, bringing a strong international background and a proactive approach to organization and communication.