# Greek tax authority dispute resolution cases > Live situation record from CLSTR: https://clstr.news/situations/greek-tax-authority-dispute-resolution-cases > Updated: 2026-09-14T05:04:08.000Z. Sources: 5. Developments: 2. Recent legal developments in Greece highlight disputes between taxpayers and the Independent Authority for Public Revenue (AADE) regarding the validity of tax assessments and deductions. In one instance, the Dispute Resolution Directorate (DED) rejected a taxpayer’s appeal for property renovation deductions. The taxpayer sought to claim expenses for energy and aesthetic building upgrades, but the DED ruled that the submitted receipts for air conditioning and window frames were invalid because they lacked the required Property Identity Number (ATAK) and proof of electronic payment. In a separate case, a 500 euro tax penalty against an Athens-based company was overturned. Tax inspectors had attempted to justify a violation by claiming the physical condition of fish—specifically their eye condition and rigor mortis—indicated a recent undocumented purchase. The DED ultimately canceled the penalty, citing insufficient documentation to support the inspectors’ biological assessments. ## Timeline ### 2026-09-14: Greece: Tax penalty overturned after fish condition used as evidence A 500 euro tax penalty in Greece was overturned after inspectors used the physical condition of fish to claim a company had failed to document a recent purchase. 2 sources. https://clstr.news/cluster/greece-tax-penalty-overturned-after-fish-condition-used-as-evidence ### 2026-09-12: Greek tax authority rejects property renovation deductions A Greek taxpayer lost a claim for 5,505.99 euros in renovation tax deductions because their receipts lacked the required Property Identity Number (ATAK). 3 sources. https://clstr.news/cluster/greek-tax-authority-rejects-property-renovation-deductions --- Cite as: Greek tax authority dispute resolution cases. CLSTR, https://clstr.news/situations/greek-tax-authority-dispute-resolution-cases