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DirectoryFinance & InsuranceFiduciary OfficesZurichSeiler Treuhand AG
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Seiler Treuhand AG

Summary

About the company

The company's core activity encompasses a wide range of services, including: tax consulting and planning, accounting and financial reporting, auditing and examination of annual financial statements, personnel administration and management, succession planning and inheritance law, legal consulting, real estate management, secretarial work and administrative support, deployment of employees and personnel placement, data protection and security (DSG). The company thus offers a comprehensive range of services focusing on the areas of finance, law, personnel and administration.

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✓ Offered12
Tax advisory
Tax planning for legal entities and individuals, inter-cantonal and international tax issues, tax-efficient structures, tax filings, assessments, appeals procedures and negotiations with the tax authorities.
Bookkeeping
Financial bookkeeping with tailored chart of accounts, key figures analyses and reporting; support for and preparation of year-end accounts, budget, financial and liquidity plans, as well as statutory annual financial statements.
Auditing
Ordinary and limited audits, special audits, internal audit function, due diligence, VAT audits, business valuations, internal control system (ICS) audits and other audits.
HR administration
Payroll and HR administration including payslips, wage payments, staff joinings and departures, wage statements, social security contributions, withholding tax reconciliations, work permits and HR advisory.
Succession planning
Advisory for succession planning, analysis of the market and the company, consideration of tax, financial and legal aspects, negotiations, support during the transition phase and implementation of the succession.
Legal advisory
Legal advisory for company formations, capital increases, mergers, acquisitions, changes of registered office, reorganisations, restructurings, liquidations, as well as matters related to debt, enforcement proceedings, insolvency, matrimonial property and inheritance law.
Property management
Administrative management of rental properties and condominium ownership, coordination of conversions and renovations, apartment handovers, rental agreements, property accountings, as well as heating and ancillary cost billings.
GWG audit
Accredited audits for AO or SRO audit firms, GWG audits in accordance with statutory requirements and industry association guidelines.
Secretarial services
Administrative secretarial services and general office support as an additional fiduciary service.
Data protection (DSG)
Analysis and data processing, as well as support with the rights of affected persons in connection with data protection law.
Secondment of employees
Advisory and handling of inbound and outbound secondments of employees to Switzerland or abroad.
Advance care directive / patient directive
Advisory and planning related to an advance care directive and a patient directive as part of comprehensive advance care planning.
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Location

Seestrasse 344
8038 Zurich

At a glance

Legal form
Corporation
UID
CHE-106.269.570
Founded
1993 · 33 years
Last commercial register change
December 2, 2025
Employees
11 to 20

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