28 Nov Tax Deduction for Building Upgrade Expenses – Extension until 2026

According to the new decision A.1153/2025, the tax deduction measure for energy, functional, and aesthetic upgrades of buildings is extended until December 31, 2026.

This decision updates the previous A.1197/2024, retaining the core framework for eligible expenses, while extending the timeframe for application.

What Changes This Year

As of this year, expenses incurred up to the end of 2026 remain eligible for tax deduction, provided that:

• The goods and services are purchased from businesses with tax residence or a permanent establishment in Greece, and
• The expenses are not part of another subsidized program, such as “Exoikonomo” (Energy Saving at Home).

Additionally, fossil fuel systems installed after 2024 are now excluded from the measure.

Who Benefits

The tax deduction applies to property owners (full ownership, usufruct, or bare ownership) who carry out eligible upgrades on their properties.

In the case of co-ownership, the maximum deductible amount is calculated in proportion to the ownership share. If the person making the expenditure holds usufruct or bare ownership, the maximum deductible amount and the resulting income tax reduction are limited accordingly, based on the value of the right relative to the total property value.

How Much Is the Deduction

• Expenses reduce the income tax over a period of up to 5 years.
• The maximum eligible expense amount is €16,000.
• The annual tax reduction may not exceed €3,200.
• The cost of goods considered may not exceed 1/3 of the amount spent on services.

Eligible Expenses

1. Service Costs
2. i) Energy Upgrades

• Installation of thermal insulation
• Replacement of windows, glass panes, and exterior protective shutters
• Installation or upgrade of heating/cooling systems, including all necessary infrastructure
• Installation of automated control systems for heating/cooling operations
• Installation of electricity self-production systems (net metering) and battery storage systems when combined with photovoltaics
• Installation of solar water heating systems using Renewable Energy Sources (RES)
• Installation of mechanical ventilation systems with heat recovery
• Lighting upgrades in common areas of apartment buildings

1. ii) Functional & Aesthetic Improvements

• Installation/replacement of plumbing systems
• Installation/replacement of electrical systems
• Roof maintenance or repair
• Wall repairs/painting, interior and exterior
• Installation of fixed or mobile shading systems
• Installation or upgrade of elevators
• Installation of home EV charging points
• Flooring replacement or repair

1. Purchase of Goods

• Thermal insulation materials
• Windows, glass panes, and shutters for replacement
• Electricity self-production systems (net metering) and battery systems with photovoltaics
• Solar water heating systems using RES
• Mechanical ventilation systems with heat recovery
• Plumbing and electrical installation materials
• Interior and exterior wall/painting materials, and other goods aligned with the service categories listed above

Requirements for Deductibility

To claim the tax deduction:

• Payments must be made electronically (via e-banking, credit card, or payment service provider).
• Invoices/receipts must be submitted to AADE through the myDATA platform, clearly specifying:
  • The type and value of goods/services (based on the list above)
  • The name and Tax ID (AFM) of the individual holding ownership/usufruct/bare ownership rights
  • The property ID (ATAK) – unless the expense concerns common areas, in which case the property address is sufficient.
• The expenses must relate to properties located in Greece.

Implementation Period

This measure applies to eligible expenses incurred from January 1, 2024, until December 31, 2026.

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