We thank our clients for their trust and continued inspiration – without you, our existence would be pointless. We thank our employees for their contribution to building and developing MDDP. To those still on board and to those who have moved on in their professional careers but are still part of the great MDDP family – our Alumni.
It is thanks to the people who contribute to MDDP’s growth on a daily basis that we are where we are and look boldly and courageously into the future. 18 years means that we have accumulated a lot of experience. We are proud and happy to say that we have built one of the largest consulting companies in Poland. And we still have the courage to reach for the stars, to forge new paths, we still have the hunger to take on new challenges, including those that are not obvious.
Thank you for being with us!
MDDP Tax Advisory is established
MDDP Outsourcing is established
MDDP Olkiewicz and Partners
is established
6 new persons join the partners of MDDP
We create the Corporate Finance
service line
MDDP Olkiewicz and Partners joins the Osborne Clarke global network
MDDP Olkiewicz and Partners joins the Osborne Clarke global network
4 new persons become partners in MDDP
MDDP joins forces with ETL Global, an international network of professional service firms
We reach for #evenmore
MDDP Group
MDDP Experts
- 41 tax advisers,
- 8 attorneys at law,
- 5 attorneys,
- about 90 other professional staff.
Women in MDDP
Of MDDP's 19 tax partners - 11 are women.
International expansion
Legislative work
Cases before administrative authorities and courts
We have also represented our clients in 4 proceedings before the CJEU!
Webinars and conferences
Our publications
Our offices
MDDP’s success is driven by individuals who share their passion, expertise and commitment every day. They are the greatest value we have. We build work environment based on mutual respect and understanding.
We are convinced that it is the individual qualities and abilities of our team members that make us unique. Therefore, we embrace diversity and inclusiveness and offer everyone the chance to fulfil their potential.

At MDDP, we feel social responsibility is not a catchphrase, but a comprehensive approach to building our company.
We do business in an ethical and sustainable manner, taking into account the impact our decisions have on the environment and local community.
As a part of MDDP for Earth initiative launched in 2019 work with our clients, business partners, NGOs and state authorities. This is how we promote the best practices in business and develop innovative, environment-friendly and socially responsible solutions, including tax and legal ones. We believe that together we can build a better, green reality in which business, both ours and our clients, will function responsibly.
We believe that together we can build a better, green world, where business operates in a responsible way.
Together we can do #EVENMORE!

Support for Ukraine
Charity activities
We support, among others the Iskra Nadziei Foundation, the Awangarda Fundation, and the Pismo Foundation.
Concern for the environment
We conduct educational campaigns and implement environmentally friendly solutions in our offices.