If you want to insulate your home to save energy, the most affordable way is to use your savings. That saves you costs in the long run. Don’t have enough savings or do you prefer to keep some money aside? Then you can choose to finance your heat pump with a personal loan, a mortgage increase or an additional mortgage.
Options at ING:
Possibilities via the government:
Great question! Because this differs per person and financial situation, it is difficult to say what works best for you. These are some important points to keep in mind:
"}},{"accordionList":[{"richBody":{"value":"The interest rate on a loan is higher than the mortgage rate, but also pay close attention to the loan amount because it has a big impact on the total interest you pay. The lower the loan amount, the smaller the difference in interest costs between different interest rates.
"},"title":"1. Loan amount"},{"richBody":{"value":"Extra costs: with a loan you only pay interest and no additional costs. With a mortgage you pay advice costs of €900. And if you need an extra mortgage you also pay notary costs of around €1,000 and possibly valuation costs of €465.
"},"title":"2. Extra kosten of niet"},{"richBody":{"value":"With the same interest rate, the rule is that the shorter the period in which you repay the debt, the lower the total interest costs. With a loan you can choose a term starting from 6 months. With a mortgage the term is between 10 and 30 years.
"},"title":"3. Loan term"},{"richBody":{"value":"Imagine you borrow €10.000 :
Now imagine you borrow €30,000 :
Because you repay more each month during the term, your debt decreases and the amount you pay in interest also goes down.
"},"title":"Calculation example - the impact of the loan amount"},{"richBody":{"value":"Imagine you have a personal loan of € 10,000 and the interest rate is 7.4%. The earlier you repay, the less interest you pay.
Option 1: term of 12 months:
Your monthly amount is € 867.11 (repayment and interest). After 12 months you have paid € 405.35 in interest on top of the € 10,000 repayment (total: € 10,405.35).
Option 2: term of 36 months:
Your monthly amount is € 310.60 (repayment and interest). After 36 months you have paid € 1,181.71 in interest on top of the € 10,000 repayment (total: € 11,181.71).
For smaller loan amounts, a personal loan is often more cost‑effective than financing through a mortgage. The extra costs and long duration of a mortgage usually don’t outweigh the difference in interest. It’s always smart to calculate your options using the current interest rates.
"},"title":"Conclusion about financing"},{"componentType":"sectionTitle","title":"Subsidies for home insulation and sustainable energy"},{"componentType":"paragraph","richBody":{"value":"To encourage energy‑saving home improvements, the Dutch government offers several subsidies. This includes subsidies for heat pumps. We’ve listed the subsidies for energy‑saving measures for you.
"},"textLinks":[{"text":"More about subsidies for home insulation and sustainable energy","url":"https://www.milieucentraal.nl/energie-besparen/energiezuinig-huis/financiering-energie-besparen/subsidie-woningisolatie-en-duurzame-energie/"}]},{"componentType":"linkList","iconTitle":{"title":"Useful information"},"textLinks":[{"text":"Everything about sustainable living","url":"/en/personal/mortgage/sustainable-living"},{"text":"Government subsidies","url":"https://www.verbeterjehuis.nl/hoe-betaal-ik-het/subsidies/"},{"text":"Finance solar panels","url":"/particulier/lenen/jouw-leendoel/zonnepanelen-financieren"},{"text":"Finance home insulation","url":"/en/personal/loans/your-goals/finance-home-insulation"}]}]},"hasMacro":false,"id":"501097ae-6fde-4105-ba97-e15397a9b514","localeString":"en-GB","mainHeaderZone":{"backLink":{"textLink":{"text":"Your Loan Goal","url":"/en/personal/loans/your-goals"}},"componentType":"productHeader","coreHeader":{"body":"Great that you’re looking into making your home more energy efficient through better insulation. We’re happy to help you with information about financing options.","headerImage":{"extension":"jpg","original":"https://assets.ing.com/m/e692ddb1848e8e3/original/making-your-home-sustainable-where-should-you-start-1920.jpg","transformBaseUrl":"https://assets.ing.com/transform/239180b4-c34f-4f96-8a9d-8e302422fa8b/making-your-home-sustainable-where-should-you-start-1920","type":"image","width":1920},"subtitle":"Good to know when you’re borrowing","title":"Financing home insulation"},"cta":{"componentType":"cta","textLink":{"text":"See our loan options","url":"/en/personal/loans/our-loans"}},"legalBanner":{"body":"Let op! Geld lenen kost geld","componentStyle":"default","headerBannerType":"headerBannerType","image":{"extension":"svg","original":"https://assets.ing.com/m/3f5c0b274ee863ed/original/Group-7.svg","transformBaseUrl":"https://assets.ing.com/transform/bfc47636-d002-461a-b209-589beaaa7596/Group-7","type":"image","width":46}}},"publishDate":"2026-06-25T14:19:27.944+02:00"}}