How the mutuelle (ziekenfonds) works in Belgium

Introduction

Belgium is known for having one of the best healthcare systems in Europe. At the heart of this system is the mutuelle (in French) or ziekenfonds (in Dutch) — the public health insurance funds that make healthcare accessible and affordable for everyone. Whether you’ve just arrived in Belgium or have already been living here for a while, being enrolled in the mutuelle is both mandatory and necessary to use the public health care system.

What is a mutuelle / ziekenfonds?

A mutuelle is the organization through which you access Belgium’s public health insurance system. Membership is mandatory and ensures that a large part of your medical costs are reimbursed.

One of the things many people appreciate about Belgian healthcare is the freedom of choice. You’re free to decide which doctor, general practitioner, or specialist you want to see — without needing a referral first. This makes the system more flexible than in some neighboring countries, where access to specialists is more restricted.

Every fund provides the same compulsory coverage: doctor visits, hospital stays, prescriptions, maternity care, and other essential treatments are reimbursed at nationally fixed rates. What differs between funds are the supplementary benefits, such as dental care, physiotherapy, glasses, or assistance abroad.

Most mutual funds charge a membership contribution, which typically ranges from €70 to €160 per year, depending on the level of extra services. There is, however, one exception: the CAAMI/HZIV , which provides only the compulsory coverage and is completely free of charge.

When must you sign up?

Health insurance is not optional in Belgium — you must register with a mutuelle if:

• you are officially registered at an address in Belgium
• you are paying social security contributions in Belgium (for example, through work)
• you are enrolled at a Belgian university

Importantly, you can only sign up once you have arrived in Belgium and are officially recognized as living here. This means newcomers often need an interim solution:

• if you’re coming from the EEA or the UK, you may use your EHIC (European Health Insurance Card) or GHIC (UK Global Health Insurance Card) for temporary cover until your registration in Belgium is complete
• if you are moving from outside the EU/EEA, temporary expat health insurance can cover you until you’re eligible for a mutuelle

With Feather’s expat health insurance, you’re free to cancel your policy on a month-by-month basis. This means you stay covered until the day your mutuelle membership is active — avoiding both gaps and unnecessary overlap in your health coverage.

How to choose a mutuelle

Since compulsory coverage is the same everywhere, your choice mainly depends on the extras and the service you want. Here are the key factors to look at:

• Supplementary benefits: which additional services matter to you (dental, physiotherapy, travel, alternative medicine)?
• Membership fees: contributions vary between funds depending on extras included
• Language and support: some funds, such as Partenamut and Helan, are known for offering better English-language services and even expat-dedicated help
• Local presence: a nearby branch makes paperwork and advice much easier

The registration process

Once you’ve chosen a mutual fund, registering is straightforward. You’ll usually need to provide:

• your passport or residence permit
• proof of address in Belgium
• your national registration number (obtained when you register at the commune)
• proof of employment, student enrollment, or other income status

After submitting your application — either online, by post, or in person — you’ll receive confirmation of membership and an insurance card or stickers to use when requesting reimbursements. From this point, you’re officially part of the Belgian public health insurance system.

Topping up your coverage

The mutuelle provides excellent compulsory coverage, and for many people this is sufficient. However, it is possible to top up your basic health insurance with private health insurance. Private policies can cover faster access to specialists, private hospital rooms, or treatments not fully reimbursed by the mutuelle. This is entirely optional, and many residents are fully satisfied with public health coverage alone.

Conclusion

The mutuelle system is central to Belgium’s excellent healthcare: it makes high-quality care affordable and accessible to everyone. Once you’re officially registered in Belgium, joining a mutuelle is one of the first steps to take to secure your health coverage.

If you’re not yet eligible — for example, if you’re still waiting for commune registration — Feather’s expat health insurance can bridge the gap. It’s accepted by visa authorities, can be canceled monthly, and ensures you’re covered from day one, until you can smoothly transition into the public system.

👉 Book a call with Feather today to get personal advice and start your journey with peace of mind.