Fiduciary Offices in the
Canton of Aargau
957 companies in Fiduciary Offices based in the Canton of Aargau — name and year of registration from the commercial register.
50 of 957 companies
Marchesin Family Office AG
Since 2019 · 1–10 empl.4.9(299)
The core activity of FinanzFabio is providing financial education and consulting services. The company offers various services, including: financial coaching, online courses on topics such as tax returns, investments, and financial education for children, podcasts and blog posts on various financial topics, and personal consulting and appointment scheduling. The company focuses on imparting financial knowledge and supporting individuals in planning and managing their finances. It does not sell financial products and instead focuses on independent consulting and education.
Trevista Treuhand AG
Since 1991 · 11–20 empl.5.0(39)
The core activity of Trevista Treuhand- und Revisionsgesellschaft AG is the provision of services in the areas of trust and revision, particularly in the fields of: accounting, auditing, tax consulting, human resources, corporate consulting, matrimonial and inheritance law, company formation and liquidation, succession planning, company valuation, and the purchase and sale of companies. The company offers its clients personalized consulting and support in these areas and strives to build long-term partnerships with its clients.
PAGG Treuhand AG
Since 2005 · 1–10 empl.4.9(127)
The core activity of PAGG Treuhand AG is the provision of fiduciary services and tax consulting.
Zehnder Treuhand AG
Since 2015 · 21–50 empl.5.0(15)
Zehnder Treuhand AG offers fiduciary services including accounting, tax services, audits, VAT matters, payroll administration, controlling and business consulting. Audit functions are carried out under the name Zehnder Revisions AG.
Nubi Treuhand + Services AG
Since 2016 · 11–20 empl.4.6(22)
The core activity of NUBI Treuhand + Services AG is the provision of services in the areas of trust, taxes, accounting, corporate consulting, financial planning, payroll administration, estate and pension planning, particularly for small and medium-sized enterprises (SMEs) and private individuals.
curaVer GmbH
Since 1999 · 1–10 empl.5.0(10)
curaVer GmbH provides digital fiduciary and accounting services for small and medium-sized enterprises. Its offerings also include HR administration, support for company formations and coaching, including KLARA-related support for digital accounting workflows.
Wüthrich&Boss Immobilien GmbH
Since 2016 · 1–10 empl.4.6(48)
The core activity of Wüthrich & Boss Immobilien GmbH is the brokerage, sale and rental of properties, as well as the valuation and financing of real estate. The company also provides services such as construction management, handover and takeover of properties.
Dynamis Treuhand AG
Since 2007 · 1–10 empl.4.4(29)
The core activity of Dynamis Treuhand AG is the provision of services in the areas of accounting, tax consulting, economic and business consulting for small businesses, SMEs, non-profit organizations and private individuals.
Zehnder Treuhand AG Brugg
Since 2021 · 11–20 empl.5.0(15)
Zehnder Treuhand AG Brugg provides fiduciary services including accounting, tax, auditing, VAT, payroll administration, controlling and business consulting. Audit activities are performed under the name Zehnder Revisions AG.
Visita Treuhand AG
Since 1984 · 11–20 empl.4.4(20)
The core activity of Visita Treuhand AG is the provision of trust services.
Zeha Treuhand GmbH
Since 2009 · 1–10 empl.5.0(10)
The core activity of ZEHA Treuhand GmbH includes: * Accounting and payroll accounting for private and business clients * Tax consulting and preparation of tax returns * Real estate management, including property management and sale of properties * Construction administration The company thus provides services in the areas of trust, taxes and real estate.
K-Vis AG
Since 1999 · 11–20 empl.4.8(6)
The core activity of K-Vis AG includes trust services, tax consulting, auditing and corporate consulting. The company supports customers in the digital design of their accounting and offers solutions for financial accounting, payroll accounting and other financial services.
APT AG Treuhand + Beratung
Since 1980 · 1–10 empl.4.8(19)
The company provides services in the areas of trust, audit and consulting. The core activities include: Trust services: accounting, financial accounting, payroll administration, tax consulting and planning; Audit: audit of financial information, company audits and special audits; Consulting: business consulting, startup consulting, strategy development, financial planning and consulting; Additional services: real estate services, legal and insurance consulting. The company supports customers in managing and developing their business, provides solutions for finance and accounting, and helps implement strategies and projects.
Schibli Immobilien Treuhand AG Aarau
Since 2002 · 11–20 empl.4.3(28)
The core activity of Schibli Treuhand und Verwaltung AG is the provision of services in the areas of real estate management, accounting, trust and auditing. Specifically, this includes the management of real estate, the performance of accounting and financial tasks, the provision of trust services, as well as the performance of auditing and examination tasks.
Hüsser Gmür + Partner AG
Since 1995 · 21–50 empl.5.0(6)
The company's core activities include trust, tax consulting, auditing, corporate consulting, succession planning, M&A as well as consulting for public administrations and NPOs/social organizations. The company offers a comprehensive range of services tailored to the needs of SMEs, public administration organizations and NPOs/social organizations.
Mahrer Treuhand AG
Since 2000 · 11–20 empl.3.9(19)
The core activity of Mahrer Treuhand AG is the provision of trust services, particularly in the areas of accounting, taxes, auditing and corporate consulting for business and private clients.
sf treuhand gmbh
Since 2006 · 1–10 empl.5.0(7)
sf treuhand gmbh is a fiduciary firm providing accounting, tax and payroll services, including preparation of tax returns, annual financial statements and VAT handling for private clients and companies. The firm also supports corporate projects such as company formation, restructurings, succession planning, fiscal representation for foreign entities and interim finance/accounting mandates.
Sacher Services GmbH
Since 2011 · 1–10 empl.5.0(9)
Sacher Services GmbH provides tax return preparation, bookkeeping, financial administration for church parishes, and advisory services on financial and administrative matters. Services include preparing tax filings, maintaining accounts, and managing parish financial administration.
Plutos Solutions AG
Since 2022 · 1–10 empl.5.0(20)
Plutos Solutions AG provides fiduciary, accounting and tax advisory services for SMEs and private individuals. Its services include digital bookkeeping, payroll administration, annual financial statements, company formation, and retirement and pension planning.
Zofingen Treuhand AG
Since 2022 · 1–10 empl.5.0(20)
Zofingen Treuhand AG provides digital fiduciary services for SMEs, including bookkeeping, payroll administration, tax advisory and annual financial statements. Services also cover company formation support, real estate management, capital gains tax advice and independent pension planning, with a single point of contact and cloud-based client access.
Cognito Treuhand GmbH
Since 2011 · 1–10 empl.4.4(39)
The core activity of Cognito Treuhand GmbH is the provision of trust services, particularly in the areas of accounting and auditing, taxes and tax consulting, payroll and personnel administration, as well as company formation and corporate consulting. The company offers its clients a comprehensive range of services to support their administrative and financial needs.
Rothstein AG
Since 2022 · 1–10 empl.4.9(33)
The company's core activity is the provision of trust services, particularly in the areas of: financial accounting, payroll accounting, taxes (annual financial statements, tax returns, VAT settlements), social insurance, creation of employment contracts and certificates, terminations, and corporate consulting (especially in company formation, hardship compensation, short-time work, dividend payments, taking out a mortgage, purchasing a property, liquidation, bankruptcy). The company also offers a free company formation service, where it covers the costs of the notary and commercial register fees.
Divor AG
Since 1990 · 21–50 empl.3.8(13)
Divor AG provides advisory and administrative services for pension schemes, including technical administration, foundation accounting, securities accounting and management functions. The company also delivers real estate services such as property management for residential and commercial buildings, brokerage of investment properties, project development and owner‑representation.
Avadis Finanzpartner AG
Since 2002 · 1–10 empl.4.7(12)
The core activity of Dörig & Partner AG is the provision of financial services, particularly in the areas of financial planning, pension planning, tax planning and succession planning for small and medium-sized enterprises (SMEs) and their owners. The company offers consulting, planning and implementation of financial strategies, pension concepts and tax solutions to enable customers to achieve an optimal financial situation.
Frohsinn Invest AG
Since 2011 · 1–10 empl.5.0(7)
Frohsinn Invest AG provides fiduciary and accounting services, tax consulting, property management, audits and assistance with company formations.
Zehnder Revisions AG
Since 2024 · 11–20 empl.5.0(15)
Zehnder Revisions AG carries out audit and review mandates as licensed audit experts and performs auditing tasks on behalf of Zehnder Treuhand AG. It provides audit-related services within the fiduciary/accounting sector.
Welte Treuhand AG
Since 1987 · 1–10 empl.4.7(7)
The core activity of Welte Treuhand is the provision of services in the areas of accounting, tax consulting, financial accounting, payroll accounting, administration and auditing for companies and private individuals.
JAVE Consulting GmbH
Since 2000 · 1–10 empl.4.6(19)
JAVE Consulting GmbH provides fiduciary and advisory services including bookkeeping, payroll, social insurance matters and monthly, quarterly and annual financial statements. It also performs tax and VAT filings and offers property management and business consultancy services such as company formation and strategic planning.
Litrag & Partner AG
Since 2010 · 1–10 empl.4.7(14)
The company provides A-to-Z services for businesses, including company formation, restructuring, succession planning, digitalization consulting, general trust services, and legal advice. The focus is on supporting small and medium-sized enterprises (SMEs) as well as young entrepreneurs and startups.
STEPHAN WEHRLI BERATUNG
Since 2019 · 1–10 empl.5.0(21)
The core activity of Wehrli Beratung is investment and financial consulting for private individuals, particularly in the areas of: * Pension planning (pension mandate, living will, last will and testament, etc.) * Tax consulting (tax returns, tax optimization) * Cohabitation consulting (cohabitation agreements, legal advice for cohabiting couples) * Insurance consulting * Financial planning and budgeting. The company offers individual consulting and coaching for private individuals to improve their financial situation and secure their future.
DW Treuhand AG
Since 1995 · 11–20 empl.4.4(7)
The core activity of DW Treuhand AG is the provision of services in the fields of economy, law, taxes, and pension planning for private clients, SMEs, and agricultural businesses. This includes, in particular: tax consulting and planning, accounting and financial management, company formation and support, succession planning, asset management and pension planning, secretarial services, and auditing. The company positions itself as a trusted partner for its clients and offers individual solutions tailored to their specific needs.
Bieri Verwaltungs AG
Since 1989 · 1–10 empl.4.3(11)
The core activity of Bieri Verwaltungs AG is the provision of trust services, particularly in the areas of: * Management of real estate and properties * Accounting and personnel administration for small and medium-sized enterprises (SMEs) * Real estate brokerage and financing * Development of cost accounting models * Exercise of controlling mandates * Customer care and general trust services The company thus offers a wide range of services tailored to the needs of companies and private individuals in the area of administration and management of real estate and finances.
Frohsinn Treuhand GmbH
Since 2011 · 1–10 empl.5.0(7)
Frohsinn Treuhand GmbH provides fiduciary and accounting services for businesses. Its services include bookkeeping and controlling, tax advisory, property management, audits and company formation; the owner-managed, independent firm primarily serves small and medium-sized enterprises and collaborates with partners.
thv AG
Since 1958 · 21–50 empl.5.0(2)
thv AG provides fiduciary services, statutory and voluntary audits, business consulting, legal advice and tax consultancy, serving mainly small and medium-sized enterprises and non-profit organisations.
Fundus Treuhand AG
Since 2003 · 1–10 empl.4.4(7)
Fundus Treuhand AG provides fiduciary services for companies, including accounting, payroll administration, tax advisory, business consulting and foundation/BVG administration. Audit services are offered through the legally independent Refundus AG.
Knaus Treuhand AG
Since 2012 · 11–20 empl.5.0(5)
The company offers comprehensive services for small and medium-sized enterprises (SMEs), including: accounting and financial consulting, tax formalities and consulting, personnel administration, corporate consulting, founding and startup support, succession planning, insurance and pension issues, debt collection procedures, IT and digitalization, inheritance law, controlling and general administrative tasks. The core activity of the company is the comprehensive care and consulting of SMEs in all financial, legal and administrative matters.
D. Widmer Treuhand GmbH
Since 2014 · 1–10 empl.4.1(34)
D. Widmer Treuhand GmbH offers fiduciary and tax services as well as real estate services, including bookkeeping, tax advisory and support for company formation, together with property management, rental administration and brokerage.
Milo Treuhand & Immobilien AG
Since 2016 · 1–10 empl.5.0(13)
The core activity of Milo Treuhand & Immobilien AG encompasses the provision of services in the following areas: accounting, taxes, payroll accounting, and property management. The company thus offers a comprehensive range of services for businesses and private individuals in the fields of finance, taxes, and real estate.
Meng und Partner Revisions AG
Since 1976 · 21–50 empl.3.7(3)
Meng und Partner Revisions AG is a revision company that provides auditing and assurance services for financial statements. It is part of the Meng & Partner Gruppe and cooperates with the group's firms on related tax, fiduciary and consulting services.
Meng und Partner AG Baden
Since 1991 · 21–50 empl.3.7(3)
Meng und Partner AG Baden is a fiduciary and audit group offering audit services, tax and legal advisory, fiduciary (accounting) services, and business and financial consulting. Its services also include HR administration and support for succession planning in small and medium-sized enterprises.
Treuhand Marcel Widmer AG
Since 2008 · 11–20 empl.4.9(7)
Treuhand Marcel Widmer AG is a fiduciary firm providing services in accounting and bookkeeping, statutory audit, tax advisory, and trust and business consulting. The firm primarily serves small and medium-sized enterprises and private clients, and also offers payroll administration and access to a network of external experts.
Peter Haller Treuhand AG
Since 1991 · 11–20 empl.4.0(4)
The core activity of Peter Haller Treuhand AG is the provision of services in the areas of corporate consulting, accounting, controlling, tax consulting, auditing, as well as pension and estate planning, in particular for companies and private individuals.
M. Attenhofer, Aktiengesellschaft Zurzach
Since 1921 · 1–10 empl.
M. Attenhofer, Aktiengesellschaft Zurzach provides fiduciary services, including company formation support, accounting, tax advice, auditing and business consultancy.
D + J Treuhand AG
Since 1958 · 1–10 empl.
The company's core activity is the provision of trust services, including accounting, financial statements, VAT, taxes, auditing, payroll and other services for small and medium-sized enterprises as well as private individuals.
Suter Treuhand- und Beratungs AG
Since 1960 · 1–10 empl.
The core activity of Suter Treuhand- und Beratungs AG is the provision of services in the areas of trust, tax consulting, business management and debt collection. The company offers a comprehensive range of services tailored to the individual needs of its clients.
Lehner Treuhand AG
Since 1964 · 1–10 empl.
The core activity of Lehner Treuhand AG is the provision of trust and accounting services for SMEs (Small and Medium-sized Enterprises), including: accounting and financial accounting, preparation of annual financial statements and VAT returns, support in maintaining accounting records, limited accounting audits, consulting for company formations, and audit expertise. As a trust company, the firm offers these services and works closely with its clients to meet their individual needs.
UTA Treuhand AG Kleindöttingen
Since 1971 · 11–20 empl.
UTA Treuhand AG Kleindöttingen provides fiduciary services and consultancy, notably accounting, tax advisory, human resources and business consulting.
UTA Treuhand AG Lenzburg
Since 1974 · 1–10 empl.
UTA Treuhand AG Lenzburg is a fiduciary firm offering accounting, tax advisory, human resources and business consulting services. The offering includes ongoing bookkeeping, tax filings, HR support and operational business advice for companies.
Zimmerli Treuhand AG
Since 1976 · 1–10 empl.
The core activity of Zimmerli Treuhand AG is the provision of services in the fields of trust, auditing and accounting, particularly in the areas of tax consulting, financial planning and corporate management. The company offers individually tailored solutions to meet the needs of its clients and has many years of experience in supporting companies and private individuals.
Häfliger Treuhand AG Holziken
Since 1980 · 1–10 empl.
Häfliger Treuhand AG Holziken provides fiduciary services including bookkeeping, financial advisory, tax services, payroll administration and business consulting.
Fiduciary Offices in the Canton of Aargau
Fiduciary Offices in the region
Point size by number of companies per place.
Source: commercial register (Zefix) · as of October 10, 2026
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