One Accountants B.V.

What One Accountants B.V. does

One Accountants B.V. (operating as One Accountants & Bedrijfsadviseurs) is a privately held Dutch accounting and business advisory firm headquartered in Zoetermeer, South Holland, Netherlands. Founded in 2011, the firm provides full-service MKB (small and medium-sized business) accounting, outsourced bookkeeping, payroll administration, corporate finance advisory, and custom KPI reporting to Dutch SMBs ranging from ZZP-ers (solo entrepreneurs) to companies with over 200 employees. The firm reports having served more than 500 companies and operates as a registered Dutch B.V. (limited liability company) with no disclosed parent, institutional investors, or funding rounds.

The firm's service delivery is built on an integrated cloud platform rather than proprietary accounting software. It combines Twinfield for online bookkeeping, Odoo for business management, Exact Online for cloud ERP, Nmbrs for payroll processing, and Power BI for client-specific KPI dashboard visualization. The firm handles full setup and implementation of these tools, positioning the integrated stack as a differentiator versus single-software MKB practices. Corporate finance services cover business valuation, due diligence, buy/sell support, financing applications, and restructuring advisory.

One Accountants operates a fee-based, sales-led professional services model. The firm prefers fixed-price all-in packages covering annual accounts, tax filings, and monthly payroll processing, with monthly billing and quote-based pricing not publicly disclosed. New client acquisition is driven by direct outreach, the firm's fiscal news blog (Fiscaal nieuws, ~181 pages of Dutch tax/employment law content), website quote requests, and referrals from partner networks (Syfers, Meijers Vitaal) and professional affiliations (NBA, Auxilium Adviesgroep). The firm is led by qualified Dutch accountants including Brian Vrijenhoek RA and Barry Wieser AA, supported by a team of 20+ professionals across accounting, relationship management, and client management functions.

Name

One Accountants B.V.

Legal name

One Accountants B.V.

Website

https://oneaccountants.nl

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

One Accountants B.V. is a privately held Dutch accounting and business advisory firm in Zoetermeer serving small and medium-sized businesses with outsourced bookkeeping, payroll administration, corporate finance advisory, and custom KPI dashboards built on integrated cloud platforms.

Ownership category

akta.pro rank

Product category

Accounting and Business Advisory Services

NAICS

Offices of Certified Public Accountants (541211), Other Accounting Services (541219)

akta.pro industry

PRIMARYBPAHABAC

Accounting & Bookkeeping Services

Business & Public Services/Professional Services (Legal, Accounting, Consulting)/Accounting, Audit & Tax Services

SECONDARYBPAHABAF

Financial Reporting & Technical Accounting Advisory (GAAP/IFRS)

Business & Public Services/Professional Services (Legal, Accounting, Consulting)/Accounting, Audit & Tax Services

SECONDARYBPAHABAA

Audit & Assurance Services

Business & Public Services/Professional Services (Legal, Accounting, Consulting)/Accounting, Audit & Tax Services

Keywords

• Accounting services
• Business advisory
• Payroll services
• Corporate finance
• Financial reporting

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, Infrastructure

Revenue model

1. Professional Accounting and Advisory Services: One Accountants generates revenue through fee-based professional services including full-service MKB accounting, outsourced bookkeeping, payroll administration, corporate finance advisory, and custom KPI reporting. The firm prefers fixed-price all-in service packages covering annual accounts, tax filings, and monthly payroll processing.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

One Accountants B.V. is a Dutch accounting and business advisory firm that delivers accounting, payroll administration, corporate finance support, and KPI reporting services to small and medium-sized businesses. The firm operates from the Netherlands and combines traditional bookkeeping with management reporting to help business owners make informed financial decisions.

Product overview

One Accountants & Bedrijfsadviseurs offers a comprehensive suite of accounting and business advisory services for the Dutch SME (MKB) market. The core offering consists of full-service accounting, outsourced bookkeeping, a state-of-the-art cloud-based accounting platform with integrated applications, payroll administration via Nmbrs, and corporate finance advisory services. The product portfolio is complemented by KPI reports and dashboards on a custom basis using Power BI. The firm leverages modern software platforms including Exact Online, Twinfield, Odoo, and Nmbrs to deliver digitalized, cloud-available services with fixed pricing for all-inclusive service packages.

Differentiator

Problem solved

Functional benefit

Products and services

• Accounting and Bookkeeping Core accounting and bookkeeping services for Dutch SMBs, including preparation of annual accounts and ongoing financial records management.
• Payroll Administration Payroll processing and administration services for Dutch employers, handling wage calculations, payslips, and related filings.
• Corporate Finance Advisory Corporate finance advisory support including financing, valuations, and transaction-related guidance for SMEs.
• KPI Reporting Key performance indicator reporting that translates financial data into management dashboards and actionable business metrics for owners.
• Business Advisory General business advisory services supporting Dutch SMB owners with strategic and operational financial decisions.

Quantifiable outcome

• More than 500 companies served, from ZZP-ers to companies with 200+ employees
• +2 more outcomes

Named customers4 records

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration5 records

Feature3 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• SyferscoreStrategic or Co-development PartnerOne Accountants works closely with the fiscalists and payroll administrators of Syfers (www.syfers.nl), combining their expertise to deliver comprehensive fiscal and payroll services to clients.
• Meijers VitaalcoreStrategic or Co-development PartnerOne Accountants collaborates with Meijers Vitaal (meijersvitaal.nl) for fiscal and payroll administration services, integrating their specialist expertise into the firm's broader service offering.
• NBA (Nederlandse Beroepsorganisatie van Accountants)coreOthersOne Accountants B.V. is affiliated with the NBA, the Dutch professional association of accountants. This affiliation provides professional standards, credibility, and regulatory alignment for the firm's accounting services.
• Auxilium AdviesgroepminorImplementation/ SI/ Consulting PartnerFor quality management, One Accountants collaborates with Auxilium Adviesgroep, which provides independent quality assurance and advisory support to ensure high standards of service delivery.
• TwinfieldcoreTechnology or IntegrationTwinfield is one of the cloud accounting software platforms integrated into One Accountants' service offering. The firm uses Twinfield as a core component of its state-of-the-art accounting platform.
• OdoocoreTechnology or IntegrationOdoo is one of the integrated software applications used by One Accountants to provide cloud-based business management and accounting services to clients.
• Exact OnlinecoreTechnology or IntegrationExact Online is one of the cloud ERP platforms integrated into One Accountants' service offering, providing online accounting, ERP, and financial management capabilities for client administrations.
• NmbrscoreTechnology or IntegrationNmbrs is the payroll portal platform used by One Accountants for payroll administration services. The firm provides clients with access to Nmbrs salary portals (Nmbrs salarisportal One and Nmbrs salarisportal Syfers) for online payroll management.

Scale indicators1 record

Recent moves5 records

Expansion highlights3 records

Broad incumbents

• KPMG Netherlands: KPMG NL is a Big 4 firm in the Netherlands offering audit, tax, legal, and advisory services across all business segments, including MKB — a broad incumbent that competes for larger Dutch SMB clients and corporate finance mandates.
• Grant Thornton Netherlands: Grant Thornton NL is a larger mid-market accounting and advisory firm offering audit, tax, outsourcing, and corporate finance to Dutch businesses, competing for the upper end of One Accountants' MKB client base.
• Exact Online: Exact is a major Dutch-headquartered cloud ERP and accounting software vendor whose platform is integrated into One Accountants' stack; it also competes indirectly by enabling SMBs to self-serve bookkeeping and financial management without a traditional accountant.

Direct peers

• Syfers: Syfers is a stated strategic partner of One Accountants for fiscal and payroll services, but operates as an independent Dutch accountancy/advisory firm serving similar MKB clients with overlapping bookkeeping, payroll, and fiscal advisory capabilities.
• Baker Tilly Netherlands: Baker Tilly NL is a mid-tier Dutch accounting and advisory firm serving MKB clients with audit, tax, outsourcing, and corporate finance services, competing with One Accountants for the same Dutch SMB segment but at a larger scale.
• Flynth Adviseurs en Accountants: Flynth is one of the largest Dutch accounting and advisory firms focused on MKB and agricultural businesses, offering outsourced bookkeeping, payroll, annual accounts, and business advisory — directly overlapping with One Accountants' core service portfolio for Dutch SMBs.
• Accon AVM: Accon AVM is a Dutch MKB-focused accounting and advisory firm providing bookkeeping, payroll, tax, and corporate finance services to small and medium-sized businesses across the Netherlands — a closely comparable direct peer in segment, geography, and offering.

Emerging players

• e-Boekhouden.nl: e-Boekhouden.nl is a popular Dutch online accounting SaaS for ZZP and small businesses, offering automated bookkeeping and tax filings — a direct substitute at the bottom of One Accountants' target market and a partial overlap for SMBs.
• Moneybird: Moneybird is a Dutch cloud-based accounting platform purpose-built for ZZP-ers and small businesses, competing with One Accountants at the lower end of the SMB segment by offering self-service bookkeeping, invoicing, and tax filing.

Others

• Auxilium Adviesgroep: Auxilium Adviesgroep is a stated quality-management and advisory partner of One Accountants, but operates as an independent Dutch advisory firm providing accounting support and quality assurance to other MKB practices — adjacent ecosystem participant.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/confidum-accountants-b-v-

Compliance1 record

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 One Accountants B.V.