The core activity of TOUMA Treuhand & Immobilien encompasses three main areas: 1. **Trust Services**: Accounting, tax services, and business consulting for small and medium-sized enterprises, including corporate accounting and consulting for start-ups, as well as tax returns for private individuals. 2. **Real Estate**: Independent real estate consulting, where the personal needs of clients are matched with the possibilities of the real estate market. 3. **Insurance**: Consulting and offering health insurance, life insurance, and property insurance to cover everyday risks.