Winthers Revisionsbyrå

What Winthers Revisionsbyrå does

Winthers Revisionsbyrå AB is a Stockholm-based, mid-sized audit and consulting firm established in 1983, operating as a Swedish private limited company (Aktiebolag). The firm delivers five core service lines: statutory audit and assurance, accounting and payroll, business advisory, tax consultation, and international advisory. It serves small and medium-sized enterprises (SMEs), owner-managed and family businesses, non-profit associations and foundations, and companies with international operations. The firm employs approximately 15-18 people, including 4-5 authorized and approved public accountants, and operates from a single Stockholm headquarters at Rålambsvägen 17.

The business model is professional services fee-for-engagement, with pricing not publicly disclosed and tailored to client scope. Revenue is generated through four streams: audit, accounting and payroll, advisory, and tax — all delivered as direct client engagements with no intermediary distribution. Winthers positions itself as combining the personal attention and competitive pricing of small firms with the service breadth of large audit firms, targeting owner-managers who want a trusted advisory relationship rather than a transactional one. The firm has been a member of UHY International since 1986, gaining access to a global network of 325+ offices in 95+ countries to support cross-border tax, VAT, IFRS, and establishment work for Swedish clients.

Go-to-market is relationship-based and direct, supported by a website, LinkedIn and Instagram presence, news/blog content on accounting topics, and password-protected instructional videos for clients. The firm is partner-owned, with multiple partners holding "Delägare" titles; Frida Widgren Wilson was elevated to partner and the board in 2022. No proprietary technology, software platforms, APIs, apps, or AI/ML capabilities are described in the source material. The firm is actively recruiting audit and accounting professionals, indicating modest headcount expansion.

Name

Winthers Revisionsbyrå

Legal name

Winthers Revisionsbyrå AB

Website

https://winthers.se

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

11–50 employees

Short description

Winthers Revisionsbyrå is a Stockholm-based mid-sized Swedish audit and consulting firm founded in 1983, serving SMEs and owner-managed businesses with audit, accounting, payroll, advisory, and tax services through approximately 15 employees and UHY International network access.

Ownership category

akta.pro rank

Headquarters

HQ city

Stockholm

HQ country

Sweden

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Audit Services: Independent review of annual reports, accounts, and management administration for companies.
2. Accounting and Payroll: Bookkeeping and payroll services provided to businesses, with dedicated personal accountants assigned to each client.
3. Advisory Services: Proactive business and financial advisory services to companies and their owners.
4. Tax Consulting: Tax advice and consultation services for businesses and private individuals, including international tax and VAT matters.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Winthers Revisionsbyrå is a Stockholm-based Swedish audit and consulting firm, founded in 1983, that delivers statutory audit, accounting and payroll, tax, advisory, and international services to primarily small and medium-sized enterprises, owner-managed businesses, and non-profit organizations. The firm operates through a partner-led model with five authorized public accountants and is a member of the UHY international network, allowing it to support clients with cross-border needs.

Product overview

Winthers Revisionsbyrå is a medium-sized Swedish audit and consulting firm established in 1983, offering an integrated portfolio of professional services to small and medium-sized enterprises, associations, and foundations. The firm operates five core service lines—Audit & Assurance, Accounting & Payroll, Advisory, Tax Consultation, and International Services—all delivered with a focus on owner-managed businesses. Services are provided through approximately 15 employees, including five qualified public accountants, with a personal approach characteristic of a smaller firm while offering the breadth of a larger organization. The company is a member of UHY International, a worldwide network of independent accounting and consulting firms operating in over 95 countries.

Differentiator

Problem solved

Functional benefit

Products and services

• Revision (Audit & Assurance) Statutory and voluntary audit services delivered by five authorized public accountants, covering annual accounts audits and assurance engagements for Swedish companies, associations, and foundations.
• Redovisning & Lön (Accounting & Payroll) Outsourced bookkeeping and payroll administration for Swedish businesses, including ongoing transactional accounting, payroll processing, and related reporting obligations.
• Rådgivning (Advisory) Business advisory services provided by partners and senior staff to Swedish SMEs, owner-managed businesses, and non-profits on transactions, restructuring, and operational finance matters.
• Skatt (Tax) Tax compliance and advisory services for corporate clients, covering Swedish corporate income tax, indirect taxes, and tax planning support, delivered alongside the firm's audit and accounting work.
• Internationella tjänster via UHY (International Services via UHY) Cross-border audit, accounting, tax, and advisory mandates delivered in coordination with the UHY international network of member firms, providing Swedish clients with a coordinated point of contact for international engagements.

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• UHY InternationalmajorStrategic or Co-development Partner · 1 January 1986Winthers Revisionsbyrå is a member of UHY International, a worldwide network of independent accounting and consulting firms. Founded in 1986, UHY International has member firms with approximately 7,850 employees across over 325 offices in more than 95 countries. This partnership enables Winthers to offer clients qualified and tailored advice globally, assist with international establishment, and handle international tax, VAT, and transfer pricing matters. Ragnar Santesson serves as the international contact person for the network in Sweden.

Scale indicators3 records

Recent moves3 records

Expansion highlights2 records

Broad incumbents

• Crowe Sweden: Crowe is a global accounting network with a Swedish member firm targeting mid-market and owner-managed businesses — comparable service lines and client profile to Winthers.
• RSM Sweden: RSM is a global mid-tier accounting network with a Swedish member firm; its positioning around mid-market audit, tax, and advisory closely mirrors Winthers' value proposition.
• Mazars Sweden: Mazars is an international audit and advisory network with a Swedish member firm serving mid-market and SME clients, comparable in service breadth and customer profile.
• Baker Tilly Sweden: Baker Tilly is an international accounting network with Swedish operations serving owner-managed and mid-sized businesses, directly comparable to Winthers' positioning.
• Grant Thornton Sweden: Grant Thornton is an international accounting network with a Swedish presence focused on mid-sized and owner-managed businesses — directly comparable to Winthers' target segment.
• PwC Sweden: PwC Sweden is one of the Big 4 audit firms in Sweden; it represents the large-firm competitive set Winthers differentiates against on price and personal service.
• BDO Sweden: BDO is a global mid-tier accounting and advisory network with a Swedish member firm serving SMEs and mid-market clients, the closest direct comparator in positioning to Winthers within a global network.
• KPMG Sweden: KPMG Sweden is one of the Big 4 audit firms in Sweden; it competes with Winthers for SME and mid-market audit mandates and sets the price benchmark the firm explicitly undercuts.

Direct peers

• Azets: Azets is a Nordic accounting, payroll, and advisory firm serving SMEs with multi-country operations; comparable in service mix and SME focus, with direct Nordic overlap with Winthers.
• Aspia: Aspia is a Swedish accounting and payroll services firm serving SMEs and mid-market companies, directly overlapping Winthers' core bookkeeping, payroll, and advisory offering in the Stockholm market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/winthers-revisionsbyr%C3%A5-ab
• Instagraminstagram.com/winthersrevisionsbyra

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Winthers Revisionsbyrå