Deadline Approaches for Critical E9 Corrections Impacting ENFIA
Taxpayers face a firm January 31 2026 deadline to amend any errors or omissions in their E9 property declaration, a process that directly shapes the ENFIA bill they will receive.
Authorities warn that uncorrected discrepancies may lead to ENFIA hikes reaching up to 90 which makes the upcoming review essential for owners who updated their property status during 2025.
Assessment notices will appear on Taxisnet at the end of February 2026 while payments are set to begin in March 2026 and continue in 12 monthly installments through February 2027.
Corrections must be submitted electronically through the AADE platform where taxpayers are prompted to inspect every recorded detail to avoid unnecessary charges.
Common Mistakes That Trigger Higher ENFIA
Frequent errors significantly inflate the final tax and taxpayers should closely review the following points:
Listing auxiliary spaces as primary areas.
Declaring basement spaces as main living areas.
Reporting more square meters than the property actually has.
Leaving the floor code blank.
Omitting codes for vacant, unfinished or non electrified buildings.
Failing to declare agricultural buildings or storage units.
Entering the completion year instead of the building permit year.
Incorrectly stating property rights such as full ownership bare ownership or usufruct.
Not declaring co ownership percentages.
Classifying mezzanines with internal stairs as primary spaces.
Digital Steps Required for Adjustments
Corrections begin once taxpayers log in to myAADE where they select the E9 submission year and open a new declaration for updates.
Users may add modify or delete property entries in tables 1 and 2 ensuring all mandatory fields are accurately filled in.
Newly added properties require details such as square meters property rights co ownership percentage and geographical identification either manually or via the objective value map.
Existing entries can be updated by adjusting only the fields that need correction.
Electricity meter numbers have been mandatory for buildings with full ownership or usufruct since 2013.
Contract information including number date notary identification will details and date of death where relevant has been required since 2014.
The system may request updates to properties with missing or incomplete data.
All changes must be saved before submitting the declaration definitively with an option to transfer it to the next year.
Who Must File an Updated E9
Anyone who bought inherited received as a donation or transferred property in 2025 is required to file a corrective E9 by January 31 to ensure their 2026 ENFIA reflects their actual holdings.
No action is needed for digital transfers made through the myProperty system because updates were automatically recorded.
Additional events requiring a declaration update include changes to property rights transformations of semi outdoor spaces legalization of unauthorized structures and any construction completion demolition or expansion.
