The core activity of Martin Weiss Treuhand AG is the provision of trust services, particularly in the areas of: Financial accounting (balance sheet, income statement), Payroll accounting and payroll processing, Property management (rental income, utility bill reconciliation, lease agreements), Tax returns for individuals and legal entities, Administration of condominiums and multi-family homes. The company supports its clients in selecting and implementing software solutions, particularly bexio and ImmoTop2, and also offers training and support. Additionally, it can take over individual business processes to relieve clients.