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ISDE 2026

Calculate your subsidy on new windows.

The ISDE scheme gives owner-occupiers a fixed amount back per m² of glass: €25 for HR++ and €111 for triple glazing in new frames. Combine it with a second insulation measure within 24 months and that amount doubles. We prepare your application; you submit it to RVO yourself.

checkValid for 2026 checkHR++ €25,00/m² · triple €111,00/m² Min. 3 m² · max. 45 m² · ×2 with 2 measures
CALCULATE YOUR SUBSIDY 4 questions · instant result
1 · Are you an owner-occupier?
2 · How many m² of glass is being replaced?
18 m² of glass ≈ 14 kozijnen

RVO calculates per m² of glass, not per window. An average tilt-and-turn window has about 1.3 m² of glass; the exact sizes will be in your quote.

3 · Which glazing?

The higher triple-glazing rate applies only if the frames are replaced too, standard with us. Triple glazing in your existing frames falls back to the HR++ amount.

4 · Are you combining this with a second insulation measure?

Carry out two or more insulation measures within 24 months and RVO doubles the amount per m².

YOUR ESTIMATED SUBSIDY

Answer the four questions above and your estimated amount appears here straight away.

An estimate based on your input. RVO determines the exact amount based on your final situation.

checkGOOD TO KNOW

We prepare your application and guide you; you submit it to RVO yourself with DigiD, as a recognised installer we supply all the required details and walk you through the procedure step by step.

Request a quote →
BEYOND THE ISDE

Check what your municipality offers

The ISDE is a national scheme. On top of it, many municipalities, provinces and water authorities run their own insulation funds, and you can usually combine those with the ISDE. How much you get and what for differs per municipality, and such a fund is often empty before the year is out. So it pays to check what applies to your address before you place the order.

The Energiesubsidiewijzer by Milieu Centraal shows in one go which national and local schemes apply to your postcode.

See the schemes in your municipality →
ISDE 2026

Claim the subsidy on new windows?

Request a no-obligation quote or book an online consultation. You'll hear back from the same team that will install them.