Family Office MJ&CIE
Your ambitions
know no bounds
A family office based in Paris and Geneva,
we support wealthy families and entrepreneurs,
both in France and internationally, in building, preserving,
and passing on their wealth with peace of mind.
Strategic
partner
for families
Comprehensive support for entrepreneurs
We serve your entrepreneurial and wealth ambitions by combining family office and corporate advisory, with expertise in France and internationally.
Strong values at the heart of our commitment
MJ&Cie was founded on a core conviction: that lasting trust can only be built through complete independence, unwavering standards, and a sincere human commitment. We respond to all requests, no matter how complex, without compromising on quality. Your interest is our course and your story, our guide.
What our
clients say
Frequently Asked Questions
A family office is an independent structure that supports wealthy families in the comprehensive management of their wealth. A true long-term strategic partner, it acts as a coordinator, ongoing auditor, and guardian of overall asset coherence — going beyond purely financial aspects.
Its areas of expertise include:
- financial management,
- legal and tax structuring,
- family governance,
- wealth transmission,
- and philanthropic projects.
There are two main types:
- the single-family office, dedicated to a single family,
- the multi-family office, which pools resources to support several families.
MJ&Cie, the first independent multi-family office founded in France in 2001, supports a deliberately limited number of families with a selective, tailor-made, and human approach.
Choosing MJ&Cie means choosing:
- a trusted, independent partner,
- a 360° vision — human and wealth-oriented,
- sustainable optimization that generates savings,
- better risk management,
- and more time and peace of mind to focus on what truly matters to you.
Our contracts are open-ended, with a three-month notice period. The relationship is designed to last, yet remains free and flexible.