Our services

We have offered comprehensive tax and accounting services for over 30 years. We offer personalized advice and assistance, based on sound professional knowledge, to the highest standards of quality and discretion.

Tax advice

We offer tax return services for individuals, for self-employed persons and for companies. We provide tax planning advice based on personal circumstances and professional activities. Our service includes tax administration and confirmation of tax invoices.


We carry out VAT registrations and filings throughout the year together with reconciliation of revenues at the year-end closing. We act as domicile and VAT representative for foreign-based companies.

Payroll accounting

  • Personnel administration and payroll
  • Social security filings
  • Year-end salary certificates
  • Work contracts and employment law questions

Business consulting

  • Business set-up, re-organization, mergers and liquidation
  • Business process consulting
  • Business valuation

Financial accounting and year-end financial reporting

We plan and advise on optimal year-end closing of business accounts.

Aviso Treuhand AG
Viaduktstrasse 65 / Pelikanweg 2
Postfach, CH-4002 Basel


Phone: +41 61 227 94 00
Fax: +41 61 227 94 10
E-Mail: kontakt@aviso.ch