About Us
Flattum & Co AS builds on the auditing practice established by Sven Flattum in 1991. For more than 30 years, we have assisted Norwegian and international businesses with audit, accounting, tax and advisory services.
Flattum & Co has its head office in Oslo and branch offices in Geilo and Florø. Through our local presence and digital working methods, we serve clients throughout Norway.
Our services include audit, tax advisory services, accounting and payroll, advisory services, bankruptcy audits and investigations.
Our services include auditing, tax advisory, accounting, payroll services, consulting and forensic accounting.
Our partners and professionals have extensive experience across a broad range of industries and businesses of varying sizes. We also have significant experience working with international groups and companies engaged in cross-border activities.
We place great emphasis on personal service, professional excellence and long-term client relationships. Our goal is to be an accessible and trusted adviser who helps clients navigate business, financial and regulatory challenges.
Flattum & Co is a member of GGI Global Alliance, one of the world's leading international networks of independent auditors, lawyers and business advisers. Through the network, we have access to local expertise and professional partners in more than 120 countries.
For information about how we process personal data, please refer to our Privacy Policy.
You can read our privacy notice here.
Why Clients Choose Us
More than 30 years of experience
State-authorised auditors and accountants
Personal service and close client relationships
Audit, accounting and tax advisory services under one roof
Extensive experience with Norwegian and international businesses
Access to expertise in more than 120 countries through GGI
