About us

Family-focused, about the business.
Professionally, about the law.

Our values

Why Mariański Group?

Mariański Group is a law firm built on values that every family business owner understands well — trust, responsibility, and a long-term perspective.

We are a trusted advisor to family businesses. We create solutions that go beyond standard frameworks, because family businesses are anything but standard..
Professionalism and passion are values we experience every day — and we strive to make them evident in every interaction with our clients.

From the very beginning, we have combined legal, tax, and strategic expertise. Rooted in our local origins, we have a deep understanding of the specifics of doing business in Poland.
Our experience is built not only on expert knowledge, but also on daily practice — every day we support business owners in making key decisions that affect their lives, their families, and their legacy built over generations.

The Values We Stand By

Passion

We do not aspire to be mere advisors, but trusted partners who understand the DNA of a family business. We know better than anyone that it is more than just finances — it is multi-generational responsibility, values, and emotions.

Professionalism

Professionalism at every level is not only about expertise, but also about attention to detail, efficiency and measurable results.
It is not about simply “getting something done”, but about doing it right — effectively and better than anyone else.

Reputation and Relationships

The quality that we would want to experience ourselves.
We do not offer “just any” service — we deliver exactly the kind we would choose. It is about comfort, transparency, and integrity. We ensure you never have to wonder whether your matter is treated as a priority.

Team

A team that builds value. Our firm is built around people who have a real impact on the market, our clients, and the broader business environment. Each of our experts not only resolves issues, but anticipates them before they arise.

Prof. dr hab. Adam Mariański

A passionate professional. Passion makes you a professional — and true professionalism exists only when work is driven by passion.
I do everything with passion, or not at all.

Professionally, I am a lawyer, academic, social activist, and entrepreneur.

I am an advocate and tax advisor, a professor at Lazarski University, and the Managing Partner of Mariański Group Law Firm. I also invest in several industries such as education, physiotherapy, real estate, and renewable energy.

I have been working in the fields of law and taxation for over 25 years. I am at my best when I go beyond the interpretation of regulations and analyse their real impact on entrepreneurs’ activities and on economic development.

Sztuka Biznesu rodzinnego

We Specialise

in Advising Family Businesses

and Private Investors

We advise on succession planning, the establishment of family foundations, business reorganisations, asset protection, as well as on ongoing legal and tax matters. We understand the emotions, relationships, and goals of business owners — because we are business owners ourselves.

For our clients, we are a partner who safeguards their business security — we predict risks, identify consequences, and recommend the best solutions before problems arise.

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Meet

Our Team

Our team consists of experienced legal and tax professionals who take a holistic approach to business. We combine practical expertise with academic knowledge, anticipate the consequences of decisions, and design tailored solutions — giving our clients confidence that every matter is handled by professionals who see the bigger picture and act with full responsibility.

Meet Our Team

We are trusted by owners of medium-sized and large family businesses, as well as by leading Polish institutions, who value our experience, effectiveness, and approach grounded in a genuine understanding of business .