Countdown is on for the launch of the Registry of Property Ownership and Management (MIDAS), introduced by Greece’s Independent Authority for Public Revenue (AADE). The new framework effectively introduces a ‘grace period’—giving property owners time to correct inaccuracies in their real estate data before cross-checks begin and penalties apply.
No Penalties, No Retroactive Charges for E9 Corrections
Under Law 5313/2026, published in the Government Gazette, key changes to the MIDAS legal framework take effect. Crucially, property owners can now update property details in their E9 tax form without triggering retroactive ENFIA charges or fines—provided certain conditions are met.
Correcting Larger Square Meters
The most significant change concerns cases where the actual built area of a property exceeds what was previously declared in the E9, the Cadastre, or title deeds. In such instances, owners may now submit the correct surface area via MIDAS without facing retroactive ENFIA assessments or administrative penalties for prior years. Any additional ENFIA liability arising from the correction will only apply starting with the 2027 tax year.
Reducing Declared Area
Conversely, if the actual area is smaller than officially recorded, corrections are permitted only when supported by an official Electronic Building Identity (EBI) document verifying the reduced size. In these cases, the resulting ENFIA reduction will also take effect from 2027—with no retroactive adjustments.
New Obligations for Rentals and Free Use
The law introduces a new requirement to update MIDAS whenever a property’s usage changes—such as entering into a new lease or granting free use. Failure to file this update within the prescribed deadline carries an administrative fine of €500. This provision enters into force on 1 November 2026.
Intentionally inaccurate declarations that lead to state subsidies or grants will incur a €1,000 penalty. For other types of inaccurate information, the fine is set at €100.
ENFIA Reforms Begin in 2027
Changes related to ENFIA calculation—based on updated MIDAS data—will be implemented starting with the 2027 tax year. Declarations submitted under MIDAS will not be deemed inaccurate for previous years, nor will they trigger sanctions. Any resulting increases or reductions in ENFIA will apply exclusively to future tax years.
MIDAS aims to create a unified, up-to-date digital snapshot of Greece’s real estate assets—serving as the foundation for future automated cross-checks between property records and tax data.
Industry Reaction
The Panhellenic Association of Real Estate Owners (POMIDA) has welcomed the grace period for corrections, calling it especially important. The association estimates it will allow hundreds of thousands of owners to resolve long-standing discrepancies in their property records.