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In addition to regional grants and preferential rate loans, renovating a home in Belgium can also entitle you to tax benefits. These incentives allow you to reduce your final bill by benefiting from a tax reduction or a reduced VAT rate. Provided you meet certain criteria, these schemes can represent several hundred or even thousands of euros in savings.
But beware: not all works qualify for tax benefits, and the rules vary depending on the region where your home is located. This page reviews the Belgian tax provisions in force in 2025, for both Brussels residents and Walloon residents, and explains how to effectively activate them.
Belgium has committed to reducing its greenhouse gas emissions and improving the energy performance of its buildings. To achieve these goals, the federal government complements regional schemes (grants and loans) by offering targeted tax reductions, particularly for roof insulation, which is considered one of the most energy-efficient renovations.
These benefits allow:
For several years, the Walloon Region has been the only one still allowing a federal tax reduction for renovation work, specifically for roof insulation.
This is therefore an interesting advantage provided all technical and administrative conditions are met. Avenir Rénovations helps you draft quotes and invoices that comply with tax requirements.
The 6% VAT applies to renovations of homes over 10 years old in Belgium. Avenir Rénovations manages the VAT certificate for your insulation, heating, roofing, etc. work.
You want to insulate the roof of your house located in Namur:
In the end, your out-of-pocket expense can be less than €2,000 for an intervention of €8,000, thanks to the combination of regional, tax aids, and VAT conditions.
Brussels residents do not benefit from federal tax reduction on renovation work, even for roof insulation. However, they can fully enjoy the reduced VAT rate of 6%, under the same conditions as Walloons.
This helps to lower the final bill on:
The 6% VAT is cumulative with RENOLUTION grants and with the ECORENO loan, making the entire project more accessible, even for low-income households.
Some tax mechanisms can apply to rented properties, provided certain rules are followed:
To avoid any rejection or tax adjustment, the documents related to your project must be:
Avenir Rénovations prepares quotes, technical sheets, and invoices compatible with the requirements of the tax administration and grant offices.
Yes, in Wallonia. If you insulate your roof, you can combine the Housing grant, the 30% tax reduction, and the reduced VAT of 6%. Provided that all rules are followed.
Yes. The tax reduction only applies after payment. Grants are also paid out after the work is completed. To avoid advancing funds, you can use a loan like Rénopack or ECORENO.
No. A final invoice, proof of payment, and a technical appendix detailing the performance criteria are required. A simple promise of work is not enough to trigger the tax advantage.
No. Only homes that are over 10 years old are eligible for reduced VAT. For the tax reduction on roof insulation, the home must have been occupied for at least 5 years.
You need to contact the Federal Public Service Finance with all necessary evidence. If needed, Avenir Rénovations can provide you with a duplicate of the required documents.
The tax advantages offered by the Belgian state effectively complement regional aid schemes. In 2025, homeowners in Wallonia can still benefit from a tax reduction for roof insulation, in addition to the reduced VAT of 6%, available throughout Belgium. When used properly, these tools allow you to significantly reduce the actual cost of your work.
With Avenir Rénovations, you are assured of meeting all technical and administrative requirements to fully take advantage of these benefits. We help you optimize your project, from the quote to the tax declaration.
Request a compliant quote today to start your work with confidence.
