Our international reach.

Due to our membership with Nexia International as well as our well established longtime contacts with foreign advisers, we are able to guarantee our clients a competent service in an international environment.



Nexia International is a global network of independent audit and advisory firms with a focus on international tax advisory services. Nexia International is amongst the largest networks after the «Big 4». Nexia International consists of member firms in over 120 jurisdictions with more than 700 locations.


EXPERTsuisse, the specialist association for auditing, taxes and fiduciary, trains, supports and represents its Swiss certified experts. EXPERTsuisse has been honouring its responsibility in the areas of the economy, society and politics for more than 90 years.


ADB is recognized as a leading Swiss tax advisory firm by the following international rating agencies.