On 28 September 2026, the Austrian Federal Finance Court (BFG) issued a procedural ruling (case reference: 44a8f094-0dad-4435-85ae-37afffbaa536) that annulled a corporate income tax assessment and remitted the case to the tax authority for a complete re‑investigation. The tax office had issued an assessment based on estimated income after the taxpayer failed to provide sufficient documentation during an audit. However, the BFG found that the authority’s estimation was arbitrary because the underlying facts – the taxpayer’s actual business operations, revenue streams, and expense structure – remained “völlig unklar” (completely unclear). The court stressed that under § 184 BAO (Federal Fiscal Code), the tax authority has a duty to investigate the facts ex officio (Ermittlungsgrundsatz) and cannot simply shift the burden of proof to the taxpayer when the authority itself has not exhausted its investigative powers. The decision cites the Constitutional Court (VfGH) precedent on the right to a fair procedure (Article 6 ECHR) and the ECJ’s ruling in Case C‑277/19 (DHL) on the principle of sincere cooperation in tax matters. The annulment means the original assessment is void, and the tax authority must conduct a new audit, gather evidence, and issue a fresh assessment. This ruling has immediate effect for all pending and future tax audits in Austria.
Key Takeaways
- Procedural Safeguard Strengthened – Duty to Investigate: The BFG reiterated that the tax authority must actively clarify the factual situation before estimating taxes. Mere reliance on the taxpayer’s non‑cooperation is insufficient; the authority must use its statutory powers (e.g., §§ 148‑150 BAO) to obtain third‑party information, conduct site visits, and analyze bank records. Failure to do so renders any estimation legally flawed.
- Full Remittal – Not a Partial Correction: Unlike a reduction of the assessed amount, the annulment and remittal (Aufhebung und Zurückverweisung) require a completely new procedural cycle. The taxpayer gains a fresh opportunity to present evidence, and the authority must rebuild the case file. This avoids “patchwork” corrections that leave fundamental factual gaps unresolved.
- Practical Impact on Tax Audits and Compliance: Tax advisors should advise clients to cooperate proactively but also to document any authority inaction. The ruling empowers taxpayers to challenge assessments based on insufficient fact‑finding. Conversely, tax authorities will likely tighten audit manuals, mandating more comprehensive evidence collection before issuing estimation notices. This may lengthen audit timelines but increase legal certainty.
Disclaimer: This article is compiled and summarized by the AI based on publicly available information and is for general information purposes only. It does not constitute any form of formal tax advice, legal opinion, or basis for performance. Please consult a qualified professional tax advisor or legal counsel for tax advice.
Source: Read Official Announcement