The IRPF solar panel tax deduction is one of the best opportunities to save on your photovoltaic installation and pay less on your next income tax return. However, time is running out: you can only apply this incentive if your installation is completed before December 31, 2025.
In this article, we explain in detail what the deduction consists of, the requirements you must meet, and how to make the most of this tax benefit with Ubora.
What is the IRPF tax deduction for installing solar panels?
The IRPF tax deduction for installing solar panels is a government-approved incentive that allows homeowners to deduct part of the investment made in works that improve a property’s energy efficiency, including photovoltaic installations.
This tax benefit allows you to recover up to 60% of the total cost of your solar installation, as long as you meet the deadlines and technical requirements established by the Spanish Tax Agency (AEAT).
The aim is clear: to promote energy-efficient renovations and reduce non-renewable energy consumption in Spanish households.
Deadlines and requirements to apply the IRPF solar panel tax deduction
According to the Spanish Tax Agency (AEAT), you must meet the following deadlines and requirements to apply the IRPF tax deduction for installing solar panels:
- The works must have been carried out between October 6, 2021 and December 31, 2025.
- The post-installation energy certificate must be issued before January 1, 2026.
- The installation must achieve at least a 30% reduction in non-renewable primary energy consumption, or improve the building’s energy rating to A or B.
- Two energy certificates are required: one before starting the installation and another after it has been completed.
- Payments must be made through bank-verified methods (transfer, card, or account deposit) for them to be valid for tax purposes.
By meeting these requirements, you can legally benefit from the IRPF tax deduction for installing solar panels and enjoy real savings on both your electricity bill and your income tax return.
How much can you save with the IRPF solar panel tax deduction
The IRPF solar panel tax deduction varies depending on the level of energy improvement achieved. There are three main brackets:
| Bracket | Deduction percentage | Requirements | Annual limit | Accumulated limit |
| Bracket 1 | 20 % | Minimum 7% reduction in heating or cooling demand | €5,000 | – |
| Bracket 2 | 40 % | ≥30% reduction in non-renewable energy consumption or an A/B energy rating | €7,500 | – |
| Bracket 3 | 60 % | ≥30% improvement or an A/B energy rating in full residential buildings | €5,000/year | €15,000 |
Any amounts that exceed the annual deduction limit may be applied during the following four tax years, up to a maximum accumulated base of €15,000.
This makes the IRPF tax deduction for installing solar panels one of the most profitable fiscal incentives for households committed to improving their energy efficiency.
Who can benefit from the IRPF tax deduction for installing solar panels?
This incentive is aimed at individuals who own a residential property—either their primary residence or a rented one—where the energy-efficiency improvements are carried out.
Homeowners’ associations can also benefit from the deduction, with each resident applying it in proportion to their ownership share.
To qualify for the deduction, you must meet the following basic requirements:
- The installation must be carried out by an authorised installation company.
- You must keep all invoices and payment receipts that prove the investment.
- The energy improvement must be certified by a qualified technician through the required pre- and post-installation energy efficiency certificates.
- The works must apply to dwellings, garages, or storage rooms intended for residential use (not applicable to economic activities).
Required documentation to apply for the deduction
When filing your income tax return, the Tax Agency will require the following documentation:
- Invoices for the installation and materials.
- Pre- and post-installation energy certificates (issued in accordance with RD 390/2021).
- Proof of bank payment.
- Technical report or project documentation of the photovoltaic installation.
- For homeowners’ associations, a certificate from the building administrator detailing how the costs are allocated among the owners.
All this documentation is essential to correctly apply the IRPF tax deduction for installing solar panels and to avoid issues in the event of a tax review.
How to apply the IRPF solar panel tax deduction step by step
- Request an energy assessment of your home from a professional installation company.
- Obtain the pre-installation energy certificate.
- Carry out the photovoltaic installation before December 31, 2025.
- Obtain the post-installation energy certificate (before January 1, 2026).
- Declare the deduction in the corresponding IRPF sections (energy-efficiency improvement works).
At Ubora, we guide you through every stage of the process so you can claim up to 60% of your investment without complications.
Benefits of taking advantage of the IRPF tax deduction for installing solar panels
✓ Tax savings: deduct up to 60% of your investment.
✓ Energy savings: reduce your electricity consumption by up to 70%.
✓ Increased property value: improve your home’s energy rating and market value.
✓ Environmental contribution: lower your carbon footprint and promote sustainable self-consumption.
In addition, with Ubora you manage the entire process—from project design and permits to the required certificates—with full guarantees and no administrative hassle.
Why choose Ubora
At Ubora, we specialise in residential photovoltaic installations and in managing tax deductions.
Our engineering team takes care of everything:
- Technical design and feasibility study.
- Complete installation and legalisation.
- Pre- and post-installation energy efficiency certificates.
- Guidance to correctly apply the IRPF tax deduction for installing solar panels.
Don’t miss the deadline. December 31, 2025 is the cut-off date to complete your solar installation and qualify for the IRPF solar panel tax deduction.
If you start the process now, you still have time to reduce your investment, lower your electricity bills, and pay less tax next year.
Contact us today on +34 683 300 529 or email us at [email protected] to receive your free assessment and secure your tax deduction before the deadline expires.
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