We kept the expertise.
We lost the layers.
WECOS is a boutique of chartered accountants (RA), based in Amsterdam. All partners have spend an average of 15 years at a big-four audit practice. Every engagement is led and executed by two, resulting in no layers between you and the person doing the work.
About WECOS
Big-four background.
Applied differently.
Striving to offer the best of both worlds: we left the layers behind, but not the standard.
Every WECOS engagement is run by two chartered accountants, with roles assigned by expertise rather than fixed seniority.There are no account managers or hand-offs: clients work directly with those performing the work, and findings are communicated as they arise.
Services
One stop shop for the CFO function
As an organisation matures, so do the questions its CFO and board face. From getting the financial foundation right at startup, through grant and subsidy reporting during growth, to IFRS readiness and transaction support at maturity. Throughout that journey, we are your sparring partner, not just the auditor who shows up once a year.We provide assurance and advisory services: the full range an organisation would look to an RA for.
Audit & Assurance
Financial statement audits, ISAE 3402 reports and agreed-upon procedures.
Transaction Services
Merger, demerger, conversion and contribution-in-kind statements, due diligence and deal readiness.
Special Purpose Assurance
Special purpose financials, grants and subsidies, tailored reporting.
Advisory Services
Position papers, GAAP conversions and audit readiness.
Need support with reporting, assurance or a transaction?
We are available for direct guidance and next steps.
Accountants focused on what truly matters.
WECOS is an independent audit & assurance firm for organisations that require sound professional judgement, reliable reporting and senior advice. We support companies, investors and stakeholders on complex matters across audit, assurance, transactions, reporting and accounting.
About WECOS
We kept the expertise.
We lost the layers.
WECOS was founded by three partners, with significant experience at a big-four audit practice.
The objective was simple: to build firm around client access and speed, not scale.
Team
Senior expertise. Personally involved.
Our engagements are led by experienced managing partners and supported by engagement managers selected on the basis of their specific expertise and the characteristics of the assignment.
Need support with reporting, assurance or a transaction?
We are available for direct guidance and next steps.
One stop shop for the CFO, at every stage of growth
As an organisation matures, so do the questions its CFO and board face. WECOS aims to be a sparring partner throughout that journey, not just the auditor who appears once a year.
Audit & Assurance
Financial statement audits, ISAE 3402 reports and agreed-upon procedures, delivered by chartered accountants across the sectors where structure and substance matter most.
Financial statement audits: independent assurance for stakeholders.
Reporting frameworks: Dutch GAAP, IFRS or company GAAP, as required.
ISAE 3402 Type I: an opinion on control design at a point in time.
ISAE 3402 Type II: an opinion on control effectiveness over a defined period.
Agreed-upon procedures: factual findings, for a defined purpose.
Sectors We Know Well
Fintech
Banking
Real estate
BioTech & Tech
Private equity
Investment management
Securitisation & SPVs
Holding & finance entities
Dutch GAAP and IFRS knowledge, vast experience in the execution of consolidation and group audits.
Transaction Services
Independent statements and due diligence for mergers, demergers, conversions, contributions in kind, IPOs and other transactions, delivered on deal timelines.
Transaction assurance: Merger statements: for national and cross-border legal mergers.
Demerger statements.
Contribution-in-kind statements.
Conversion statements.
Due diligence: buy-side, vendor and capital market transactions.
Built For Transaction Timelines*
48 hrs Engagement acceptance
72 hrs Execution timeline set
96 hrs Audit work initiated
10 days Audit work completed
* Terms and Conditions apply
Special Purpose Assurance
For reporting built around a specific requirement, not a standard template stretched to fit.
Special purpose financial statements: for lenders, investors or counterparties needing non-standard reporting.
Grant and subsidy audits: MDIEU, EIC Accelerator, Horizon Europe and other national and EU programmes.
Tailored reporting: built around the engagement, never from a template.
Advisory Services
We support the CFO and finance team through audits and other significant changes in the organisation, at the moments when that support matters most, and we're quick to respond when you need us.
Position papers supporting accounting policy choices under Dutch GAAP and IFRS.
GAAP conversions.
Financial statement reviews.
Facilitating constructive dialogue between clients and their auditors.
Audit-readiness support, where good preparation makes for a smooth audit.
One phone call away, with short turn-around times.
Internal controls guidance and advice.
Our Approach
Clear steps. Careful execution.
The right expertise is essential whenever numbers are reviewed, relied upon or challenged by external stakeholders.
Step 01
Understand
We start with the context, interests and information needs
Step 02
Analyse
We bring the relevant accounting, assurance or transaction issues into sharp focus.
Step 03
Advise
We translate findings into clear conclusions, documentation or advice.
Step 04
Resolve
We support execution, reporting and stakeholder communication.
Step 05
Follow up
We remain available for follow-up questions, review or further support.
Professional standards,
clearly explained.
