iXBRL Reporting in the Netherlands 

Starting from the 2025 financial year, large Dutch legal entities are mandatory to file their annual financial statements digitally under the Standard Business Reporting (SBR) framework. While standard XBRL is widely used, iXBRL (Inline eXtensible Business Reporting Language) has become the leading international format to fulfill this requirement. It bridges the gap between human-readable business reports and structured, machine-readable data. By embedding digital tags directly into an HTML document.

Navigating this digital transition requires flawless execution from both an preparation and a statutory audit perspective. Missing tags or validation errors can lead to immediate rejection by the Dutch Chamber of Commerce (Kamer van Koophandel). We provide integrated technical and advisory support to keep your financial reporting compliant, structured, and auditable.

Our services

Whether you need to convert your financial data into the correct taxonomy or require comprehensive pre-audit validation to satisfy statutory requirements, our specialized teams deliver full-scope support.

1. iXBRL accounting & reporting services

For finance teams and accounting departments, the challenge lies in mapping existing reporting structures to the mandatory Dutch taxonomy. We manage the entire data preparation pipeline:

• Report Conversion: Transforming your existing consolidated and standalone financial statements into compliant Inline XBRL format.
• Taxonomy Mapping & Tagging: Accurate selection and embedding of iXBRL tags across all financial statements, notes and disclosures.
• Process Optimization: Aligning your current financial consolidation software with digital filing requirements to automate future reporting cycles.

2. Audit support & validation services

For corporate entities undergoing a statutory audit, the digital statements submitted via SBR or iXBRL. Must strictly align with the approved and audited financial statements. We mitigate audit friction by acting as the technical bridge:

• Audit Readiness: Preparing clean documentation of taxonomy choices, making it easier for auditors to verify the completeness of mandatory filing data
• Pre-Audit File Validation: Running comprehensive diagnostic checks to eliminate validation failures, incorrect tags and formatting discrepancies before auditor review.
• Consistency & Alignment Checks: Verifying that the human-readable HTML layer perfectly matches the underlying audited financial figures, enabling a smooth sign-off from your external auditor.

The mandate applies strictly to large entities meeting at least two of the three criteria on two consecutive balance sheet dates: a turnover greater than €50 million, a balance sheet total greater than €25 million or an average of 250 or more employees.

6 Steps to a Successful iXBRL Filing

Preparing an iXBRL filing involves more than converting financial statements into the correct format. Our guide outlines six essential steps to help you prepare, validate and submit your iXBRL filing in the Netherlands.

Submit your contact details via the form below to receive the full guide directly by email.

Schedule your consultation

We offer a free initial consultation to think along with your business and determine which approach fits your situation best. During the call, we provide practical guidance on the most suitable reporting structure and audit readiness for your company. An appointment can be requested easily via the contact form.