Extendum

What Extendum does

Extendum is a Dutch membership organization serving accounting firms across the Netherlands, founded in 1996 and headquartered in Zwolle. The company offers a portfolio of subscription-based advisory and compliance services covering accountancy and assurance, tax advisory, legal advice, personnel and organization, pensions, corporate finance, salary administration, and marketing/communications, exclusively to affiliated member firms. Its online product suite includes the Extendum Kennisbank (a knowledge library at €416 per year ex-VAT spanning five professional domains with templates, checklists, and work programs), the CDD subscription (a Wwft anti-money laundering customer due diligence research tool backed by the Handelzeker, C6, and KvK data sources), the PE Portal for continuing professional education, the Privacy portal, and the Nextendum Nieuws news platform.

The business model is built on annual recurring subscriptions and advisory fees from member accounting offices, distributed directly through a closed-membership model with no public channel. The customer base is composed of SMB Dutch accounting firms, with testimonial customers including Godthelp, Finx, Sloane, Hoefs, Hermans, Baas, Van Middelkoop, and VTB. The technology architecture consists of branded web platforms (kennisbank.extendum.nl, pe-portal.extendum.nl, privacy.extendum.nl) with database integrations to third-party Dutch commercial and government data providers; no proprietary AI/ML capabilities are evidenced. Headcount is in the 11-50 range, consistent with a small specialist professional services organization.

On October 7, 2025, Extendum B.V. was declared bankrupt, and on October 24, 2025, Fiscount acquired the activities, brand, and employees, continuing service provision to member firms under new ownership. The current operating status under Fiscount is the relevant entity going forward, with the Extendum legal entity itself in insolvency.

Name

Extendum

Legal name

Extendum B.V.

Website

https://extendum.nl

Company type

Private

Founded year

1996

Operating status

Acquired

Headcount range

11–50 employees

Short description

Extendum is a Dutch membership organization that provides subscription-based advisory, compliance, and knowledge services to member accounting firms across the Netherlands, including a Knowledge Bank, CDD research tools, and professional education portals. Following its October 2025 bankruptcy, activities were acquired by Fiscount.

Ownership category

akta.pro rank

Headquarters

HQ city

Eemnes

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Knowledge Bank Subscription: Annual subscription service providing access to online knowledge library covering accountancy, corporate finance, legal advice, personnel & organization, and tax advisory. Costs €416 per year excluding VAT.
2. CDD Subscription: Customer Due Diligence subscription offering unlimited client investigations at fixed rates, with batch processing and continuous monitoring capabilities for Wwft (Anti-Money Laundering) compliance.
3. Membership Services: Organization providing advisory and services to affiliated accounting firms including accountancy, tax advisory, personnel & organization, pensions, legal advice, corporate finance, payroll administration, and training.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

Extendum is a membership organization that delivers advisory services (accountancy, tax, corporate finance, pensions, legal, HR, payroll) to Dutch accounting firms, complemented by subscription-based online products — the Extendum Kennisbank knowledge library (€416/year), the CDD research subscription for Wwft anti-money laundering compliance, Nextendum Nieuws news portal, and the PE-Portal for professional education. Services are accessible exclusively to affiliated member firms in the Netherlands.

Product overview

Extendum is a Dutch accounting advisory organization providing a portfolio of subscription-based online products and services for accounting firms. The core offerings include the Extendum Kennisbank (subscription knowledge database at €416/year covering Accountancy, Corporate Finance, Legal Advice, HR & Organization, and Tax Advice), the Extendum CDD-abonnement (Customer Due Diligence research subscription for Wwft compliance), Nextendum Nieuws (industry news portal), and specialized portals for PE portfolio management and privacy. These products are primarily designed for member accounting offices in the Netherlands.

Differentiator

Problem solved

Functional benefit

Brands

• Extendum Kennisbank: Online knowledge bank covering Accountancy, Corporate Finance, Legal Advice, HR & Organization, and Tax Advice, offering templates, sample letters, checklists, work programs, and manuals for subscription.
• Nextendum Nieuws
• Extendum CDD-abonnement
• PE-portal
• Extendum Opleidingen

Products and services

• Extendum Kennisbank (Knowledge Bank) Annual subscription knowledge library covering Accountancy, Corporate Finance, Juridisch Advies (Legal Advice), Personeel & Organisatie (HR & Organization), and Fiscaal Advies (Tax Advice). Provides models, sample letters, checklists, work programs, and manuals for office organization and compilation/assurance practices. Available exclusively to affiliated Extendum member offices at €416 per year excluding VAT.
• Extendum CDD-abonnement (CDD Subscription) Customer Due Diligence (CDD) research subscription for Wwft anti-money laundering compliance, providing unlimited CDD investigations with batch processing, continuous monitoring of existing clients, automatic PDF documentation, and screening against PEP lists, sanction lists, negative media, and excluded directors. Integrated with the Handelzeker database powered by KvK and C6 data sources.
• Nextendum Nieuws Online news portal providing industry updates across Accountancy, Fiscaal (Tax), Juridisch (Legal), P&O (HR), Corp. Finance, Pensioen (Pension) and Algemeen (General) topics for affiliated member firms.
• PE-Portal Online portal enabling accountants to manage their Professional Education (PE) portfolio in compliance with Dutch continuing education requirements.
• Accountancy & Assurance Advisory Advisory and support services in accountancy and assurance provided to affiliated member accounting firms in the Netherlands.
• Fiscaal Advies (Tax Advisory) Tax advisory services for member accounting firms, including guidance on Dutch tax law and fiscal matters.
• Personeel & Organisatie (HR & Organization Advisory) Advisory services in personnel, HR and organization matters for Dutch accounting firms.
• Juridisch Advies (Legal Advisory) Legal advice services for member accounting firms, providing guidance on Dutch legal matters affecting accountancy practice.
• Corporate Finance Advisory Corporate finance advisory services delivered by Extendum's in-house corporate finance advisers to Dutch member accounting firms.
• Pension Advisory Advisory services on Dutch pension matters provided to member accounting firms.
• Salarisadministratie (Payroll Administration) Payroll administration services for member accounting firms and their clients.

Quantifiable outcome

• Unlimited CDD investigations at fixed subscription rate
• +2 more outcomes

Named customers10 records

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Five partnerships are on record, tiered core and minor.

• FiscountcoreOthers · 24 October 2025Fiscount has taken over the activities, name, and employees of Extendum following Extendum B.V.'s bankruptcy declaration in October 2025. Services to member firms continue under the Fiscount banner. Contact information updated to [email protected] and www.fiscount.nl.
• HandelzekercoreTechnology or IntegrationHandelzeker provides the database for Extendum's CDD (Customer Due Diligence) research tool. The database sources information from KvK (Dutch Chamber of Commerce) and C6 for client due diligence screening.
• C6 (c6-intelligence.com)coreTechnology or IntegrationC6 provides data intelligence for the CDD research database used by Extendum, supporting anti-money laundering compliance screening.
• KvK (Kamer van Koophandel)coreTechnology or IntegrationDutch Chamber of Commerce provides official business registration data integrated into the Handelzeker database used for Extendum's CDD research tool.
• NovakminorStrategic or Co-development PartnerNovak and Extendum have a collaboration agreement. An article titled 'Extendum en Novak maken de balans op' (Extendum and Novak take stock) was published in December 2022 indicating a partnership evaluation.

Scale indicators2 records

Recent moves8 records

Expansion highlights4 records

Direct peers

• Fiscount: Fiscount acquired Extendum's activities, name, and employees in October 2025 and now continues the same member services. It is the most directly comparable entity as it has effectively absorbed Extendum's customer base and product suite.
• SRA (Samenwerkende Registeraccountants en Accountantskantoren): SRA is a Dutch cooperation network of independent accounting firms, offering shared services, knowledge resources, and advisory support — directly comparable to Extendum's membership and knowledge-bank model.
• Novak: Novak is a Dutch cooperation of accountancy and advisory firms with shared knowledge products and member services, and is an existing collaboration partner of Extendum. It competes for the same member-firm audience.

Broad incumbents

• Mazars Netherlands: Mazars is an international audit, tax, and advisory firm with Dutch operations offering professional services that overlap with Extendum's accountancy, tax, and corporate finance advisory scope.
• Baker Tilly Netherlands: Baker Tilly Nederland is a mid-tier accounting and advisory network serving Dutch SMEs with consulting, tax, and compliance services that overlap Extendum's advisory domains.
• HLB Nederland: HLB is a global network of independent accounting and advisory firms with a Dutch member organization serving SMEs — comparable in customer base to Extendum's member firms.
• BDO Nederland: BDO Netherlands is part of a major global accounting network with internal knowledge management, advisory, and compliance tools that compete with Extendum's offerings, though at much broader scale.

Regional players

• Accon AVM: Accon AVM is a Dutch accountancy and advisory group serving SMEs and ZZP'ers with services in accountancy, tax, and HR — overlapping with Extendum's advisory and ZZP-Toolbox offerings.
• VGD (Van Gerven De Jong): VGD is a Dutch accounting and advisory firm focused on healthcare and SMEs, providing tax, HR, and corporate finance advisory services that intersect with several of Extendum's advisory domains.

Others

• Handelzeker: Handelzeker is the data partner powering Extendum's CDD tool, sourcing from KvK and C6. It is an enabling/ecosystem partner rather than a competitor, but is a relevant comparable for the compliance-data vertical.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/shareArticle?mini=true&title=Hulpmiddel%20CDD-onderzoek&url=https://www.extendum.nl/themas/wwft/hulpmiddel-cdd-onderzoek
• Facebookfacebook.com/sharer.php?u=https://www.extendum.nl/themas/wwft/hulpmiddel-cdd-onderzoek/&t=Hulpmiddel%20CDD-onderzoek
• Xtwitter.com/share?text=Hulpmiddel%20CDD-onderzoek&url=https://www.extendum.nl/?p=5737

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Extendum