The core activity of Andrea Leuzinger GmbH is the provision of services in the field of finance and accounting, particularly in accounting, as well as consulting and support in social insurance and tax matters. Specifically, this includes: Accounting and financial accounting (financial accounting, invoicing, accounts receivable and payable management, payment transactions, cost and cash flow statements, liquidity planning, periodic and annual financial statements); Social insurance (AHV, IV, EO, MSE, accident, illness, pension fund, affiliation clarifications, settlements); Taxes (value-added tax, tax returns for natural and legal persons, withholding tax, fiscal representation, withholding tax settlements); Personnel administration (payroll accounting and salary payments, personnel administration, permit procedures and other personnel expenses, creation of annual payroll certificates). The company offers these services as an outsourcing solution for companies, enabling them to focus on their core business.