The Independent Authority for Public Revenue (AADE) has launched an automated integration between the myPROPERTY platform and the E9 property tax declaration form, enabling automatic population of the Unified Property Code (KAEK) for property transfers, donations, and parental provisions. Effective October 7, 2026, notaries and taxpayers submitting E9 declarations through the TAXISnet portal will see the KAEK field auto-filled based on the property’s registration in the National Cadastre. This automation eliminates manual entry errors that previously caused mismatches between declared properties and cadastre records, leading to delayed processing and penalties. The system covers three transaction types: (1) property transfers (sales, exchanges), (2) donations (inter vivos gifts), and (3) parental provisions (transfers from parents to children under favorable tax treatment). For each transaction, the notary’s digital submission to the Cadastre triggers an immediate API call to AADE’s database, retrieving the validated KAEK and populating the E9 form in real-time. The automation extends to the calculation of the property’s objective value (OMV) and the applicable tax rate based on the relationship between transferor and transferee. AADE estimates this will reduce E9 processing time from 15 business days to 48 hours and cut declaration errors by 85%. Notaries must ensure their digital signature certificates are updated to the latest version compatible with the new API. Taxpayers who have already filed E9 declarations for 2026 transactions without KAEK can submit amendment declarations without penalty until December 31, 2026. The integration is part of AADE’s broader “Digital Tax Administration 2025-2027” strategy to interconnect all property-related registries.
Key Takeaways
- Real-Time KAEK Auto-Population: The myPROPERTY-Cadastre-AADE integration automatically fills the KAEK field in E9 declarations for transfers, donations, and parental provisions, eliminating manual entry errors and reducing processing time from 15 days to 48 hours.
- Mandatory Notary Digital Certificate Update: Notaries must upgrade their digital signature certificates to the latest version compatible with the new API by October 31, 2026, or face submission failures. AADE provides a testing sandbox for certificate validation.
- Penalty-Free Amendment Window: Taxpayers who filed 2026 E9 declarations without KAEK can submit amendments without penalty until December 31, 2026. After this date, standard late-filing penalties apply.
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