NSeA develops its business activity in accordance with the most advanced international standards.

In an international level NSeA established preferential agreements with law firms in London, Madrid, Barcelona, Amsterdam, Brussels, Paris, Geneva, Zurich, São Paulo, Rio de Janeiro, Hong Kong and Singapore.

The lawyers of NSeA are members of the Portuguese Fiscal Association (APF), International Association of Young Lawyers (AIJA), International Fiscal Association (IFA) and International Tax Planning Association (ITPA).