Worrell and Jetten

What Worrell and Jetten does

Worrell & Jetten (W&J) is a privately held Dutch multidisciplinary accounting and advisory firm headquartered in Zoetermeer, Netherlands, serving small and medium-sized (MKB) entrepreneurs primarily in the South Holland region. Founded in 1970, the firm employs 45 professionals across accounting, tax, legal, mergers and acquisitions, pension, payroll/HRM, ICT, and corporate finance disciplines, organised around a single-relationship-manager model in which each client is assigned a dedicated relatiemanager who coordinates specialist input as needed. Service delivery is underpinned by cloud-based infrastructure partnerships with Twinfield and Exact Online for financial administration, integrated with the firm's proprietary SLIM Inzicht management reporting dashboard built on the Visionplanner platform.

The firm's product portfolio spans core compliance services (annual financial statements under NV-COS 4410, tax filings, audit and assurance, payroll) and higher-value advisory services (M&A and corporate finance, restructuring, financing requests, strategic SLIM Vooruit methodology). Recurring-revenue products include the SLIM Inzicht subscription dashboard (from €100 per year) and a ZZP outsourced administration package for sole proprietors (from €75 per month). Go-to-market is primarily sales-led through direct relationships, referrals within the regional entrepreneur community, content marketing (blog, newsletters), events including cybersecurity awareness sessions, and partnerships with sector bodies such as RAI CarosserieNL.

Revenue mechanics combine fixed-fee and time-and-materials billing for professional services engagements with subscription billing for digital products. The firm is a member of the SRA and INAA Group networks, co-developed an approved modelovereenkomst with NOBCO for ZZP coaches in 2016, and maintains a financing partner network including Kapitaal Op Maat, Geldvoorelkaar, and Funding Circle. W&J is led by managing partner Erik Westerhof alongside partners Martine Schwagermann, Jan van den Berg, Robin van der Salm, Gerard van der Lelie, and Christian Langeveld.

Name

Worrell and Jetten

Legal name

Worrell & Jetten Accountants en Adviseurs

Website

https://worrelljetten.nl

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

101–250 employees

Short description

Worrell & Jetten is a privately held Dutch multidisciplinary accounting and advisory firm in Zoetermeer serving MKB entrepreneurs in South Holland with accounting, tax, legal, M&A, HRM, IT, and pension services, supported by its proprietary SLIM Inzicht cloud dashboard.

Ownership category

akta.pro rank

Product category

Accounting & Advisory Services

NAICS

Administrative Management and General Management Consulting Services (541611)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

SME Relationship Management & Advisory (Credit, Growth, Succession) (FSABABAJ)

Keywords

• Accounting advisory services
• Tax legal advisory
• Mergers acquisitions advisory
• Financial management reporting
• SME entrepreneur advisory

Headquarters

HQ city

Zoetermeer

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, Others

Revenue model

1. Professional Services — Accounting & Audit: Fee-based professional services encompassing financial statement compilation (jaarrekening), audit, and assurance. Revenue is generated through project-based engagements and recurring retainer arrangements for accounting services. Pricing follows fixed-fee or time-and-materials models depending on client complexity and scope.
2. Tax Advisory Services: Recurring and project-based tax advisory engagements covering corporate tax, personal income tax, VAT, and inheritance/estate tax planning. Includes tax filing services and ongoing tax planning for MKB clients.
3. Legal & Corporate Advisory: Legal advisory covering corporate law, employment law, restructuring, and M&A advisory including due diligence, valuation, and transaction support. Charged on a project or hourly basis.
4. SLIM Software-as-a-Service (SLIM Inzicht): Annual subscription for the Visionplanner-based SLIM Inzicht management reporting dashboard, starting from €100 per year. Revenue recurs annually as clients renew access to the platform.
5. ZZP Financial Administration Package: Monthly retainer for outsourced financial administration services targeting solo entrepreneurs and single-shareholder BVs, starting from €75 per month. Includes payroll administration, periodic reporting, annual accounts, and all tax filings.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Worrell and Jetten is a multidisciplinary Dutch accounting and advisory firm serving MKB (SME) entrepreneurs with a full-service portfolio spanning accountancy, tax advisory, legal advisory, M&A and corporate finance, pensions, salary and HRM, ICT, and financial administration. The firm delivers these services through a single relationship manager model supported by a proprietary cloud-based management reporting tool (SLIM Inzicht) built on Visionplanner.

Product overview

Worrell and Jetten operates as a multidisciplinary advisory firm offering a comprehensive portfolio of professional services organized around a strategic methodology called SLIM (Strategie, Lange termijn, Interactie, Missie). The core product suite includes SLIM Inzicht, a Visionplanner-based management reporting dashboard providing real-time financial insights and forecasting; Financieringsaanvraag for funding and financing advisory; Jaarrekening for annual financial statement compilation; and Herstructurering for corporate restructuring services. These are complemented by core practice areas covering Accountancy, Fiscaal (Tax Advisory), Juridisch (Legal), Fusies en Overnames (M&A), Pensioenen, Salaris en HRM, and ICT. The SLIM Vooruit methodology serves as an overarching strategic framework connecting all services, enabling the firm to provide integrated full-service support for SMB entrepreneurs in various stages of business lifecycle.

Differentiator

Problem solved

Functional benefit

Brands

• SLIM Inzicht: Online financial dashboard and management reporting tool providing real-time financial insights, budget comparisons, and automated profit forecasting
• SLIM Vooruit
• W&J Corporate Finance

Products and services

• Accountancy Full-service accounting including financial statement preparation, audits, and financial administration management for strategic decision-making, targeted at SME entrepreneurs.
• Fiscaal (Tax Advisory) Tax advisory services maximizing the client's fiscal situation through strategic tax planning, corporate tax, personal income tax, VAT, and inheritance/estate tax planning, plus tax filing services.
• Juridisch (Legal Advisory) Legal risk management and advisory services including guidance and support during legal conflicts, covering corporate law and employment law for SME clients.
• Fusies en Overnames (M&A Advisory) Mergers and acquisitions advisory from transaction initiation through closing, supported by a multidisciplinary deal team with single contact point, covering strategic, valuation, due diligence, and negotiation phases.
• Pensioenen (Pension Advisory) Pension advisory services for retirement planning and employee pension schemes.
• Salaris en HRM Payroll administration and HRM services for efficient employee management.
• ICT IT advisory and support services including ICT scans and digital transformation guidance.
• SLIM Inzicht Cloud-based management reporting dashboard providing real-time financial insights, monthly budget comparisons, automatic profit forecasting, and secure online document archive. Built on Visionplanner software with integrations to Twinfield, Exact Online, and payroll systems. Annual subscription starting from €100/year.
• Financieringsaanvraag Funding request advisory service assisting entrepreneurs in developing business plans, selecting optimal financing mix, and creating persuasive financing memoranda. Connects clients with traditional bankers and crowdfunding platforms.
• Jaarrekening (Annual Financial Statements) Annual financial statement compilation service producing documents with risk-focused compilation statements, strategic and practical advice, and digital submission to the Chamber of Commerce. Prepared in accordance with NV-COS 4410 compilation standards.
• Herstructurering (Corporate Restructuring) Corporate restructuring advisory service analyzing fiscal, legal, and financial aspects to optimize business structure, enable tax savings, and facilitate business succession.
• SLIM Vooruit Strategic advisory methodology helping entrepreneurs set goals, determine optimal direction, and implement changes. Combines Strategy, Long-term thinking, Interaction, and Mission principles for business development.
• ZZP Financial Services Comprehensive financial and administrative services for self-employed entrepreneurs including online accounting, tax filings, and management reporting, starting from €75 per month.

Quantifiable outcome

• SLIM Inzicht clients report 100% real-time financial visibility, monthly budget comparisons, and automatic year-end forecasting, eliminating end-of-year surprises
• +2 more outcomes

Named customers6 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

Feature3 records

Partnerships

13 partnerships are on record, tiered core and minor.

• VisionplannercoreTechnology or Integration · 1 March 2026W&J developed its proprietary SLIM Inzicht management reporting tool on the Visionplanner software platform. Visionplanner serves as the underlying engine for real-time financial dashboards, budget comparisons, and forecasting delivered to clients as part of W&J's subscription service.
• NOBCO (Nederlandse Orde van Beroepscoaches)coreStrategic or Co-development Partner · 14 July 2016W&J and NOBCO jointly developed a modelovereenkomst van opdracht (model services agreement) for NOBCO member coaches. The agreement replaced the VAR and received formal approval from the Dutch Tax Authority (Belastingdienst) on 4 July 2016. This was the second time W&J obtained approval for a model agreement — only about 200 of 3,500 submitted agreements were approved at the time. The agreement clarifies employment status for ZZP coaches and removes the obligation to withhold and pay wage taxes.
• TwinfieldcoreTechnology or Integration · 26 November 2014W&J selected Twinfield as one of its two primary cloud accounting platforms for processing client financial administration. Twinfield integrates with logistics software, reporting tools, and scan solutions. This partnership enables W&J to offer real-time, digital financial administration processing to its MKB client base.
• Exact OnlinecoreTechnology or Integration · 26 November 2014W&J partnered with Exact Online as its second primary cloud accounting platform. Exact Online offers a modular structure with extensive third-party software integrations. The partnership allows W&J to serve a broad range of clients with different administrative needs.
• Kapitaal Op MaatminorChannel Partner/ Reseller/ DistributorCrowdfunding platform included in W&J's network of financing partners for M&A and growth financing advisory engagements. Used to connect SME clients with alternative financing options alongside traditional bank lending.
• GeldvoorelkaarminorChannel Partner/ Reseller/ DistributorCrowdfunding platform in W&J's financing partner network, enabling MKB clients to access alternative financing routes beyond traditional banking for acquisitions and growth capital.
• Funding CircleminorChannel Partner/ Reseller/ DistributorBusiness lending platform included in W&J's network of financing partners for SME loan facilitation as part of acquisition and financing advisory services.
• SRA (Samenwerkende Registeraccountants en Accountants Administratieconsulenten)coreStrategic or Co-development PartnerW&J is a member of the SRA network, a Dutch association of independent accounting and advisory firms. SRA promotes quality standards, provides a code of conduct (Algemene Voorwaarden), and facilitates knowledge sharing among member firms. SRA also offers tools such as the SRA Cultuurscan for organisational culture assessment.
• INAA GroupminorStrategic or Co-development PartnerInternational network of independent accounting and advisory firms to which W&J belongs, providing cross-border knowledge exchange and support for clients with international operations.
• IP-Marktplaats (IP Marktplaats)minorChannel Partner/ Reseller/ DistributorPlatform/network listed as a partner resource for ZZP clients, providing a marketplace for IP-related services or connections relevant to solo entrepreneurs.
• ZZPrminorChannel Partner/ Reseller/ DistributorZZP platform listed as a partner resource offering tools and services for sole traders and freelancers.
• HotzzpotminorChannel Partner/ Reseller/ DistributorZZP platform/network referenced as a partner resource for sole entrepreneurs and freelancers.
• Gemeente Zoetermeer / Ter Zake het OndernemershuisminorStrategic or Co-development PartnerLocal government entrepreneurship hub in Zoetermeer with which W&J collaborates to support ZZP entrepreneurs and small businesses in the region.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Mazars Netherlands: Mazars is an international audit, tax, and advisory firm with a Dutch practice serving mid-market and SME clients. It offers overlapping multidisciplinary services including M&A advisory, but at a broader scale and with international reach.
• BDO Netherlands: BDO is a top-tier international accounting and advisory network with a substantial Dutch presence serving MKB, mid-market, and large corporate clients. It overlaps W&J across accountancy, tax, and M&A advisory but operates at significantly larger scale and serves enterprise clients alongside SMEs.
• Grant Thornton Netherlands: Grant Thornton is an international accounting network with a Dutch practice focused on mid-market and growth-stage companies. It provides overlapping advisory, tax, and transaction services but with broader geographic reach and larger engagement sizes than W&J.
• EY Netherlands: EY is a Big 4 firm with a Dutch practice covering audit, tax, and transaction advisory services. It competes with W&J for larger SME mandates and corporate finance engagements but operates at significantly larger scale with broader capabilities.
• Baker Tilly Netherlands: Baker Tilly is an international accounting and advisory network with a Dutch member firm serving mid-market clients across accountancy, tax, and corporate finance. It competes for similar M&A and advisory mandates but at a larger scale than W&J.
• KPMG Netherlands: KPMG is a Big 4 firm with a Dutch SME and mid-market practice offering accountancy, tax, and advisory services. While primarily serving larger clients, its SME practice overlaps with W&J's market for larger Dutch SMEs seeking M&A and corporate finance advisory.

Direct peers

• Flynth: Flynth is one of the largest Dutch regional accounting and advisory firms serving MKB entrepreneurs across multiple sectors with full-service accountancy, tax, and advisory offerings. It is the closest direct comparable to W&J in terms of client segment, geographic spread, and multidisciplinary service model.
• Accon AVM: Accon AVM is a Dutch regional accounting and advisory firm serving SME clients with accountancy, tax, and corporate finance services. It competes directly with W&J in the same MKB segment and uses similar relationship-manager-led delivery.
• Countus Accountants + Adviseurs: Countus is a Dutch regional accounting and advisory firm serving MKB entrepreneurs with full-service accountancy, tax, and corporate finance offerings. Its size, geographic footprint, and SME-focused multidisciplinary model are closely aligned with W&J.
• Moore Netherlands: Moore is an international accounting network with a Dutch member firm focused on mid-market and SME clients across accountancy, tax, and advisory. Its size, structure, and SME orientation closely resemble W&J, making it a strong direct comparable.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/pages/Worrell-Jetten/159376427472933?fref=ts
• LinkedInlinkedin.com/company/worrell-&-jetten-accountants-en-adviseurs?trk=topnavhome
• Xx.com/worrellenjetten

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 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 Worrell and Jetten