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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint742,806 companies indexed · Last updated: today
DirectoryFinance & InsuranceFiduciary OfficesBollS1 solutions AG
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Verified· 3 sources

S1 solutions AG

Summary

About the company

The core activity of S1 Solutions is to provide services to companies, particularly in the areas of: * Company formation (GmbH, AG) * Accounting and taxes * Personnel administration * Business consulting and coaching (Back on Track) * Accounting courses for self-employed individuals. The company supports its customers with administrative tasks, enabling them to focus on their core business.

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Accounting and Taxes
Accounting for sole proprietorships, start-ups, small businesses as well as medium-sized and larger companies; financial accounting, VAT (MWST) returns, payroll accounting, annual financial statements, tax returns and reporting.
Formation of a GmbH or AG
Assistance with company formation, from document preparation through the capital account and notarial certification to the entry in the commercial register; including advice on legal form, insurance and deadlines.
Tax Returns and Annual Accounts
Tax returns for companies as well as for self-employed persons and employees; on request including annual accounts, filed for legal entities or personal tax cases.
Personnel Administration
Personnel administration for employees: employment contracts, terminations, payslips, wage certificates, registrations and deregistrations with authorities as well as reports to social insurance and withholding tax.
Reconstruction of Accounting
Updating and reconstructing missing or neglected bookkeeping; review documents, close gaps, contact authorities and get the bookkeeping back in order.
Reviews

Aggregated rating

Aggregated rating
4.7
of 5

Aggregated from 14 reviews across all connected sources

Sources
GGoogle4.714
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Oberfeldstrasse 52
3067 Boll
Opening hours
Mon
09:00 - 17:00
Tue
09:00 - 17:00
Wed
09:00 - 17:00
Thu
09:00 - 17:00
Fri
09:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-489.865.989
Founded
2023 · 3 years
Last commercial register change
January 20, 2025
Employees
1 to 10

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