Dutch Health Insurance Basics: How the Basisverzekering Works

Dutch health insurance is a private contract almost everyone here is legally obliged to hold, selling a package whose contents the government fixes to the last treatment. What the law requires, the four-month rule that is not a grace period, how the eigen risico is billed, and the dates that govern switching.

Health insurance in the Netherlands is not optional, it is not run by the state, and it is not something an employer holds on your behalf. It is a private contract that almost everyone living or working here is legally obliged to hold, sold by commercial insurers under rules the government writes down to the last treatment. That arrangement — private companies selling a product whose contents are fixed by law — explains most of what newcomers find confusing.

This guide explains how the system works: who the obligation covers, what the package contains, where the money goes, and which dates the law attaches. It does not evaluate insurers or policies and contains no advice about which cover to take out — Polderly is not a licensed insurance adviser or intermediary.

Who has to be insured, and from when

Article 2 of the Zorgverzekeringswet (Zvw, the Health Insurance Act) does not define the obliged group; it borrows it: anyone insured by operation of law under the Wet langdurige zorg (Wlz, the long-term care act) must take out a zorgverzekering. Article 2.1.1 Wlz then names two groups — residents of the Netherlands, and non-residents subject to Dutch wage tax on work performed in the Netherlands. Residence is a factual test: article 1.2.1 Wlz defines an ingezetene as someone who lives in the Netherlands, and article 1.2.2(1) assesses where a person lives naar de omstandigheden, on the circumstances. Registering with your gemeente (municipality) is evidence of that, not the trigger. The payroll test brings in the second group, cross-border commuters included.

A few people fall outside it. Article 2(2) excludes serving military personnel and those exempted from Wlz obligations on conscientious grounds under article 64 of the Wet financiering sociale verzekeringen. Beyond the statute, EU coordination rules can assign your social insurance to another member state — a posting, a pension from elsewhere — so the Wlz may not cover you and the Zvw duty never arises. The SVB (the social insurance bank) determines those cases.

Where the duty does apply, article 5(5)(a) Zvw sets the rule newcomers hear about most and misread most often: if the policy takes effect within four months of the obligation arising, it is backdated to the day that obligation arose. That is a backdating provision, not a grace period. You are obliged from day one, and the four months only describe how far cover can reach back. Sign inside the window and cover runs from the start, with premium owed for the whole period including the weeks before you signed. Sign after it and the backdating is gone: cover begins on the start date, no premium is owed for the gap, and care received during it is your own bill. The obligation normally starts on the date of a residence permit or the first working day.

The basisverzekering is the same wherever you buy it

The most useful fact about the system: the statutory package does not vary by insurer. Article 11(3) Zvw hands its content and scope to a general administrative order (an algemene maatregel van bestuur) — the Besluit zorgverzekering — and to ministerial regulation beneath it. The package is a government decision, revised each 1 January and identical at every company selling it: GP care, hospital and specialist treatment, prescription medicines on the national list, mental health care, obstetric and maternity care, ambulance transport, and the rest of the statutory list. One qualification belongs next to that: article 11(5) permits model contracts that leave out particular performances an insurer finds ethically or religiously controversial, in geringe afwijking — in slight deviation — from the standard package, and such policies exist. Article 17(3) stops it becoming a price lever: the premium basis must equal the one set for full cover.

Article 3(1) adds the other half: every insurer must, on request, conclude a zorgverzekering with any obliged person living in its working area, and with any obliged person living abroad. There is no medical underwriting. Refusal is possible only in the two cases article 3(4) lists: where the applicant already holds a zorgverzekering, and — the one that bites — where an earlier zorgverzekering with that insurer was cancelled or rescinded by either side within the preceding five years for deliberate deception or for non-payment of premium. The law also sets one premium per policy variant rather than a price per person, so age, health and claim history do not move it.

What differs between insurers is everything around the package: the premium, which providers they have contracted, how they reimburse care from providers they have not, service, and supplementary products. The cover itself is not one of the variables.

What you actually pay

The nominal premium goes from you to the insurer, monthly, per adult. The Dutch government's estimate for 2026 puts the average at €1,884 a year, about €157 a month.

The income-dependent contribution (inkomensafhankelijke bijdrage Zvw) is the part most people never see. For 2026 the Belastingdienst (the Dutch tax office) sets the employer levy at 6.10% of wages, paid on top of salary; where the contribution falls on the individual instead — self-employed income, some pensions and benefits — the rate is 4.85%. Either way it is capped at a contribution income of €79,409. Both rates and the cap reset annually.

The eigen risico is the excess, covered in the next section.

Zorgtoeslag runs the other way: an income-linked allowance from the Belastingdienst that offsets part of the premium, with its own limits and its own application, set out in toeslagen explained.

Children are a special case. Under article 16(2)(a) Zvw no premium is due until the first day of the month after a child turns 18, and article 19 applies the eigen risico only from 18. Under-18s must still be registered on a policy, a duty article 2(3) puts on the parent or guardian.

The eigen risico, and how it is actually billed

Article 19(1) Zvw gives every insured person of 18 or older a verplicht eigen risico of €385 per calendar year. Because the amount sits in the statute, it is identical at every insurer. Articles 19(2) and 19(3) provide for annual indexation against projected care spending, with a ministerial regulation replacing the figure whenever the indexed amount moves by €5 or more — but article 19(7) disapplies both for the years 2019 to 2026, which is why the number has stood still. It moves when the legislature moves it.

Article 20(2) separately allows variants with a vrijwillig eigen risico of €100, €200, €300, €400 or €500 a year against a premium discount, putting maximum exposure at €885. Offering them is optional; offering at least one variant with no voluntary excess is not, under article 20(1).

The billing surprises people more than the amount. You hand over €385 nowhere: the provider bills your insurer, the insurer charges the tariff against your remaining eigen risico, then invoices you. Hospital care is billed as a treatment episode, so an invoice can land long after the appointment. Article 19(4) Zvw and article 2.17(3) of the Besluit zorgverzekering set the outer limit: a bill counts against a year's eigen risico only if the insurer received it before 31 December of the following year. The counter resets on 1 January and nothing unused carries over.

Some care sits outside it entirely. Article 2.17(1) of the Besluit zorgverzekering lists care from the huisarts, multidisciplinary primary care of which GP care forms part, advice a huisarts requests from another provider in order to diagnose, treat or refer you, obstetric care and kraamzorg, the non-invasive prenatal test, the combined lifestyle intervention, district nursing, and certain donor-related care and transport. The distinction that catches people: the exemption covers the huisarts's own care, not everything the huisarts sets in motion. Blood tests, prescribed medicines, imaging and a specialist referral are separate services, charged against the eigen risico. Article 2.17(2) also lets an insurer waive it for designated providers, prevention programmes, medicines and devices — so two policies can differ here even though the €385 cannot.

Natura, restitutie and combinatie

These words describe how an insurer discharges its statutory duty of care (zorgplicht), not how much cover you get. That duty is owed to each insured person individually, and it is what you invoke when no huisarts near you has room: registering with a huisarts sets out what your insurer then has to do. Article 11(1) Zvw offers two shapes: (a) the care itself, or (b) reimbursement of its cost; article 11(2) permits a policy to combine them.

A natura policy is shape (a): the insurer contracts providers and delivers care in kind, and contracted treatment is settled directly between provider and insurer. Use a provider the insurer has not contracted and article 13(1) gives a right to a reimbursement "to be determined by the insurer" — a policy term, not a statutory percentage. Article 13(2) puts the calculation method in the model contract and article 13(4) makes it identical for everyone in the same situation, so the figure is published and uniform rather than negotiated. Case law constrains how low it can go: in a 2014 judgment the Hoge Raad (the Dutch Supreme Court) confirmed the hinderpaalcriterium, under which the reimbursement may not be so low that it becomes a practical obstacle to using a non-contracted provider. Reported percentages cluster in the 70–80% band of an average contracted rate — market convention, not a figure in the law.

A restitutie policy is shape (b): the insurer reimburses the cost, you choose the provider, and reimbursement is typically capped at what the insurer treats as a reasonable market rate — again a policy term in the model contract. A combinatie policy applies one shape to some kinds of care and the other to the rest, which is why the label on the front says less than the policy read per care type.

What aanvullende verzekering is, and what it is not

Supplementary insurance sits entirely outside the Zvw, and everything below follows from that. It is an ordinary private insurance contract covering what the statutory package excludes or limits — adult dental care, physiotherapy beyond what the basic package covers, glasses and lenses, orthodontics, extra cover abroad.

There is no acceptance duty, because article 3(1) applies to the zorgverzekering and nothing else: an insurer may ask health questions, exclude a condition, or decline the application. Its terms, price and cancellation rules are the insurer's rather than the government's, and can change yearly. And it never alters the basisverzekering: the two are separate contracts even when sold as one bundle, quoted as one monthly figure and collected by one direct debit — which matters when only one is being cancelled.

The switching window, and the dates behind it

Article 17(7) Zvw says a change in the premium basis cannot take effect earlier than seven weeks after it has been communicated to the policyholder. For a change landing on 1 January, that puts the announcement no later than 12 November — the date every insurer's premium for the coming year is public by, and the date the switching period is conventionally counted from.

Article 7(1) sets the other end: the policyholder may cancel at the latest on 31 December of each year, with effect from 1 January.

Then the provision almost everyone gets wrong. Article 5(5)(b) backdates a new policy that takes effect within one month of a previous one ending by cancellation on 1 January, running the new cover from the day after the old one ended. In plain terms: cancelling by 31 December leaves until 31 January to take out the replacement, backdated to 1 January, so there is no gap and no uninsured period. Cancelling is the step with the hard deadline; choosing is the step with the extra month.

If 31 December passes with no cancellation, the existing policy continues into the new year on the new premium and the new statutory package. Mid-year exits are narrow: article 7(3) bars cancelling because the statutory package has been trimmed, and article 7(4) gives a six-week right after certain notices about your insurer under the Wet marktordening gezondheidszorg.

Being uninsured: the CAK procedure

Articles 9a to 9d Zvw set out a fixed enforcement ladder, run by the CAK (the Dutch Central Administration Office). It compares national datasets to find obliged people holding no policy (article 9a(1)) and sends a written aanmaning giving three months from dispatch to arrange cover (article 9a(2)). If those months pass without a policy, article 9b(1) requires an administrative fine. Article 9b(2) defines its size as three times the standaardpremie from the Wet op de zorgtoeslag reduced to a monthly amount. The standaardpremie is a statutory reference amount, not a price any insurer charges: it is set each year at the estimated average nominal premium plus the average eigen risico an insured person actually pays, and it is what zorgtoeslag is calculated from — which is why it sits above the nominal premium. Being indexed, the euro amount moves every year. For 2026 the CAK puts it at €529.74, being three times €176.58; the CJIB (Centraal Justitieel Incassobureau, the Dutch central judicial collection agency) collects it. The decision carries a further three-month deadline (article 9b(5)).

Miss that and article 9c imposes a second fine of the same size plus an order giving another three months. If that expires too, article 9d(1) has the CAK take out a policy on your behalf: it picks the insurer (article 9d(2) spreads such cases across insurers in proportion to their size), takes the variant with the lowest premium and no voluntary excess (article 9d(3)), and article 9d(7) blocks cancellation for twelve months.

Nothing in it covers the past: care received while uninsured stays your own bill, usually the larger number. A different CAK scheme, under article 18c(1) Zvw, catches people who are insured but six monthly premiums in arrears; that is the payment-arrears route, not this one, and the two are often confused.

FAQ

Does my employer arrange health insurance for me? No. The employer pays the income-dependent contribution — 6.10% of wages in 2026 — but the zorgverzekering is a contract in your own name, taken out by you and cancellable by you, even where an employer points staff at a particular scheme.

Do I have to pay €385 before the insurance does anything? No. It is not paid in advance or at a desk. Care is billed to the insurer, which charges it against your eigen risico until the €385 is used up and invoices you afterwards. Care from the huisarts, obstetric care and kraamzorg, district nursing and the other items in article 2.17 of the Besluit zorgverzekering never count against it.

Can an insurer refuse me because of a pre-existing condition? Not for the basisverzekering. Article 3(1) obliges every insurer to conclude that contract on request, without medical questions, and the premium for a variant is the same for everyone holding it. Health is never a ground for refusal; article 3(4)(b) allows one on a different footing — an earlier policy with that insurer cancelled or rescinded within five years for deliberate deception or unpaid premium. Aanvullende verzekering falls outside the Zvw, so health questions, exclusions and refusals are possible there.

Is travel insurance or an EHIC enough while I settle in? Neither is a zorgverzekering, so neither discharges the article 2 duty for someone it applies to. The European Health Insurance Card covers necessary care during a temporary stay on the strength of cover held elsewhere, not Dutch statutory cover. Whether the duty applies at all can turn on EU coordination rules, which the SVB determines.