The core activity of the company 'Margrit Karlen Treuhand Dienstleistungen' is the provision of services in the field of finance and accounting, particularly: ordinary accounting, VAT settlements, interim and annual financial statements, balance sheet recommendations, accounts payable and accounts receivable accounting, tax returns for companies, associations and private individuals, tax representation, including negotiations with tax authorities and representation before tax authorities and instances. The company thus offers comprehensive services in the field of finance and accounting to support customers in managing their finances and fulfilling their tax obligations.