About us!

Our story


Urbaczka & Szymik Silesian Accounting Group is established as a civil partnership specializing in bookkeeping. There are two employees


ax Advisory office is established - Klimek Szymik Kordal and Partners Limited


change of name to KSK Advisors Ltd


LAW Leader - a multi-disciplinary partnership is created - the first in Poland which brings together the expertise of lawyers and tax advisors


another company, TAX Leader, is created, specialising exclusively in providing tax advice; at the same time we started creating the Leader Group, which in 2010 had over 40 employees


there is over 50 team members and we have started the process of re-branding to change the company image


Audit Leader is established, led by a statutory auditor


we opened a branch office in Warsaw


the Katowice headquarters is relocated from the premises at Warszawska Street to the ALTUS office building


we obtained the ISO 27001 and 9001 certification


the re-branding and business image change have been completed and GLC is finally created


there are over 100 specialists in our team


we provide services for over 1000 clients from Poland and abroad; we guarantee professional support in accounting, law, taxes and other business related areas.


the year when we started


over 100 experts work at GLC!

8 mln

value of our Public Liability insurance – means no-risk cooperation


Over 1000 satisfied Clients!


square meters office


countries where our clients come from

Walk through the GLC office

Our office is located in the heart of Katowice, on the 14th floor of the ALTUS office building. Take a virtual walk around our office - see how we work!

Social activity

We implement the main values of GLC, among others through activities for the development of local entrepreneurship and cooperation with universities and industry organizations. We defend taxpayers' rights and support charity campaigns.

GLC in the rankings

We occupy high positions in prestigious industry rankings organized by “Rzeczpospolita” and “Dziennik Gazeta Prawna”.

GLC Team

GLC is composed of a team of 100 experts: tax advisers, lawyers, accountants, statutory auditors, HR and payroll specialists and specialists in many other fields. All of them constantly improve their qualifications and supplement their knowledge, and follow changes in the legal, tax and market environment on an ongoing basis. As a result, they successfully find solutions that fully take into account the economic interests of our clients.