The core activity of NUI Treuhand & Immobilien GmbH encompasses three main areas:
1. **Trust Services**: The company provides services in the fields of accounting, payroll and personnel administration, annual financial statements, and VAT returns.
2. **Taxes**: NUI Treuhand & Immobilien GmbH supports private individuals and companies in preparing tax returns, including tax returns for inheritance and co-ownership communities and real estate gains. Additionally, the company handles communication with tax authorities and appeals against tax assessments.
3. **Real Estate Management**: The company offers administrative, technical, and financial management of rental properties and condominiums, including the initial rental of new construction projects.