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ONE! Treuhand GmbH — Bank in Opfikon

№1 · Banks Opfikon

ONE! Treuhand GmbH logo

ONE! Treuhand GmbH

5.0(30)Ratings via GoogleBank

About ONE! Treuhand GmbH

ONE! Treuhand GmbH, based in Zurich-Glattbrugg, offers comprehensive fiduciary and financial services specifically tailored to the needs of companies and private individuals. The goal of ONE! Treuhand is to enable clients to have a clear and transparent financial situation through digital and personal support. The focus is on the areas of accounting, tax advice, and payroll accounting. The experts at ONE! Treuhand understand the challenges that can arise in the daily operations of a company and do everything they can to relieve clients of administrative tasks. Instead of dealing with complex financial matters, clients can concentrate on their core business, supported throughout by a dedicated point of contact who is at their side at all times.

The company uses modern digital solutions to optimize accounting and tax advice. With the fiduciary app, receipts can be easily captured and managed digitally, which creates clarity and efficiency. In addition, ONE! Treuhand offers the innovative Smart Profit System, which enables clients to structure their income sensibly from the outset and thereby have better control over profit and expenses. This offers not only a high level of financial security but also helps to fulfill state tax obligations correctly and on time.

ONE! Treuhand rises to the challenges of the times and supports not only local companies in Zurich but also clients throughout Switzerland and internationally. The transparent and fair pricing model ensures that there are no hidden fees and that every service is clearly calculated. Clients appreciate the reliability and the direct availability of their advisors, who are always available for questions and consultations. With over 300 satisfied clients and a high rating of 4.8/5, ONE! Treuhand has established itself as a trustworthy partner in the fiduciary industry.

Services

Accounting
Tax advice for businesses and private individuals
VAT advice
Payroll accounting
CFO mandates
Taxation of cryptocurrencies

At a glance

Digital fiduciary app for capturing receipts
4.8/5 rating from 21 Google reviews
A dedicated personal contact rather than changing case handlers
Own 'Smart Profit System' for profit and tax planning
Based in Zurich-Glattbrugg, serving clients nationwide and internationally
Founded by a federally certified fiduciary expert

Opening hours

Opening hours
Monday08:00 – 17:00
Tuesday08:00 – 17:00
Wednesday08:00 – 17:00
Thursday08:00 – 17:00
Friday08:00 – 17:00
SaturdayClosed
SundayClosed

Address & contact

Europa-Strasse 19, 8152 Opfikon

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Key facts

ONE! Treuhand GmbH (Bank) is located at Europa-Strasse 19, 8152 Opfikon. On Google, ONE! Treuhand GmbH is rated 5.0 out of 5 from 30 reviews. Opening hours: Mon–Fri 08:00–17:00, Sat–Sun closed. In the Hero Score for banks in Opfikon, ONE! Treuhand GmbH ranks 1 of 4.

Address
Europa-Strasse 19, 8152 Opfikon
Google rating
5.0 / 5 (30 reviews)
Opening hours
Mon–Fri 08:00–17:00, Sat–Sun closed
4 more facts
Services
Accounting, Tax advice for businesses and private individuals, VAT advice
Hero-Score
Rank 1 of 4 in Opfikon
Category
Bank
Website
onetreuhand.ch

Source: CityHero directory, ratings via Google · data as of August 2026.

Frequently asked questions

What is the address of ONE! Treuhand GmbH?

The address is Europa-Strasse 19, 8152 Opfikon. CityHero lists 4 banks in Opfikon in total.

What do Google reviews say about ONE! Treuhand GmbH?

Google users give ONE! Treuhand GmbH an average of 5.0 out of 5 stars (30 reviews).

Which services does ONE! Treuhand GmbH offer?

The services of ONE! Treuhand GmbH include Accounting, Tax advice for businesses and private individuals, VAT advice, Payroll accounting and CFO mandates. 6 services are listed in total.

When is ONE! Treuhand GmbH open?

ONE! Treuhand GmbH is open as follows: Mon–Fri 08:00–17:00, Sat–Sun closed. It is open 5 days a week and closed on Saturday and Sunday.

Is ONE! Treuhand GmbH open on Sundays?

No, ONE! Treuhand GmbH is closed on Sundays. It is also closed on Saturday.

How can I contact ONE! Treuhand GmbH?

By phone on 044 533 34 25. Website: onetreuhand.ch. You can also send ONE! Treuhand GmbH a free, no-obligation request via CityHero.

Hero Score

Very good
60Hero Score
Rating38/45
Review count9/20
Profile quality13/15

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