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EU/EEA Citizens

EHIC, S1 forms, A1 certificates, coordination regulation — how EU freedom of movement works with health insurance

The Coordination Regulation — EC 883/2004

The backbone of cross-border social security in Europe is Regulation (EC) No 883/2004, commonly known as the coordination regulation. Together with its implementing regulation (EC) No 987/2009, it ensures that people moving between EU/EEA countries and Switzerland do not lose their social security rights — including health insurance. This is not a harmonization of national systems. Each country keeps its own rules. Instead, the regulation coordinates how those national systems interact when a person crosses borders.

The regulation applies to all EU member states, the EEA countries (Norway, Iceland, Liechtenstein), and — through a separate bilateral agreement — Switzerland. It covers employed persons, self-employed persons, students, pensioners, and their family members. Since 2011, it also applies to third-country nationals who are legally resident in an EU member state and have a cross-border situation within the EU (though not in the EEA countries or Switzerland for this category).

The Four Core Principles

Understanding these four principles is essential. They govern every cross-border health insurance situation in the EU:

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Principle 1: One Country at a Time (Lex Loci Laboris)

You can only be subject to the social security legislation of one member state at a time. This prevents double insurance and double contributions. Generally, you are insured in the country where you work (the Beschaeftigungslandprinzip), not where you live. If you live in Poland but work in Germany, you are subject to German social security law.

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Principle 2: Equal Treatment

You must receive the same benefits and obligations as nationals of the country whose legislation applies to you. A French citizen working in Germany has exactly the same rights within the German GKV (statutory health insurance) system as a German citizen. No discrimination based on nationality is permitted.

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Principle 3: Aggregation of Periods

Insurance periods, employment periods, and residence periods completed in other member states must be taken into account when determining eligibility for benefits. If you need 5 years of insurance history to qualify for certain benefits in Germany, years insured in Spain or Italy count toward that total. This prevents people from losing entitlements simply because they moved.

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Principle 4: Export of Benefits

Certain benefits — particularly cash benefits like sickness allowance (Krankengeld) — can be exported to another member state. You do not lose your right to a cash benefit simply because you reside in or move to another EU country. However, benefits in kind (actual medical treatment) are generally provided according to the rules of the country where you receive the treatment.

These principles work together to create a safety net for mobile EU citizens. Without them, moving between countries could mean gaps in coverage, loss of entitlements, or being forced to pay into two systems simultaneously. The regulation does not replace national law — it sits on top of it and resolves conflicts between national systems.

EHIC — European Health Insurance Card

The European Health Insurance Card (EHIC) is the most widely recognized tool of EU social security coordination. Issued free of charge by your home country's health insurer, it entitles you to medically necessary treatment during a temporary stay in another EU/EEA country or Switzerland. The keyword here is "temporary" — the EHIC is not designed for people who have moved to another country or who travel specifically to receive treatment.

What the EHIC Covers

The EHIC covers treatment that becomes medically necessary during your stay, taking into account the nature of the treatment and the expected length of your visit. This includes:

  • Emergency treatment at hospitals and emergency rooms
  • Doctor visits for acute illness or injury
  • Treatment for chronic or pre-existing conditions that become necessary during your stay (e.g., dialysis, oxygen therapy, chemotherapy if you cannot wait until returning home)
  • Maternity care if you give birth during a temporary stay
  • Prescriptions for necessary medications

Treatment is provided under the same conditions and costs as for locally insured persons. This means you may still need to pay the same co-payments (Zuzahlungen) that German residents pay — for example, the EUR 10 daily hospital co-payment.

What the EHIC Does NOT Cover

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EHIC Limitations

  • Planned treatment — if you travel to Germany specifically to see a doctor or have a procedure, the EHIC does not apply. You need an S2 form for that.
  • Private providers — the EHIC only works within the public healthcare system (Kassenarztliche Vereinigung network). Private clinics and doctors who do not accept statutory insurance will not accept your EHIC.
  • Repatriation — if you need to be transported back to your home country, the EHIC does not cover the cost. This is a major gap that travel insurance typically fills.
  • Long-term care — the EHIC is for temporary stays. If you are living in Germany, you need proper German health insurance.

Using the EHIC in Germany

When visiting a doctor or hospital in Germany, present your EHIC at reception. The provider should accept it and bill the treatment through the Aushilfsverfahren (substitute procedure). In practice, not every doctor's office is familiar with the EHIC process. Some may ask you to pay upfront and claim reimbursement from your home insurer.

If you have forgotten your EHIC or it has expired, your home insurer can issue a Provisorische Ersatzbescheinigung (Provisional Replacement Certificate) — a temporary paper document that provides the same rights as the EHIC. Contact your home insurer and ask them to fax or email it. The German healthcare provider may also issue an Aushilfsschein (substitute certificate) by contacting a German Krankenkasse to verify your coverage.

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Practical Tip: Carry Travel Insurance Too

The EHIC is excellent but has gaps. A supplementary travel insurance policy (Auslandsreisekrankenversicherung) typically costs EUR 10–20 per year and covers repatriation, private doctor visits, and treatment that exceeds what the EHIC provides. Most German insurers and travel agencies recommend having both.

Moving to Germany for Work

If you are an EU/EEA citizen who moves to Germany to take up employment, the Beschaeftigungslandprinzip (country of employment principle) kicks in immediately. You become subject to German social security law from day one of your employment. This means you are automatically enrolled in the German statutory health insurance system (GKV), just like any German employee.

Automatic GKV Enrollment

When you start a job in Germany with a gross salary below the Versicherungspflichtgrenze (compulsory insurance threshold, currently EUR 77,400 per year in 2026), you are versicherungspflichtig — mandatorily insured in the GKV. Your employer will ask you to choose a Krankenkasse (statutory health insurer) within two weeks of starting work. If you don't choose, your employer's default Krankenkasse will be assigned to you.

You have free choice among all open Krankenkassen in Germany — there are around 95 of them. Popular choices for expatsinclude TK (Techniker Krankenkasse), AOK, Barmer, and DAK, but you can choose any that suits you. Contributions are split roughly 50/50 between you and your employer, deducted automatically from your salary.

Informing Your Home Country

Once you are insured in Germany, you must inform your home country's health insurer that you have moved and are now insured in Germany. In most countries, your home insurance will be suspended or terminated. This step is important — if you fail to do it, you may end up paying contributions in both countries, and untangling this retroactively is a bureaucratic nightmare.

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Ending Home Insurance

Contact your home country's health insurer and provide them with proof that you are now insured in Germany. A Mitgliedsbescheinigung (membership certificate) from your German Krankenkasse is usually sufficient. Your home insurer should then deregister you from the date your German insurance began. Keep all correspondence — you may need it if you return to your home country later.

Earning Above the Threshold

If your gross salary exceeds the Versicherungspflichtgrenze, you are versicherungsfrei — exempt from mandatory GKV enrollment. You can then choose between voluntary GKV membership (freiwillige Versicherung) or private health insurance (PKV). This decision has long-term consequences, especially if you plan to stay in Germany. EU citizenship does not change the rules — the same income thresholds and choice mechanisms apply to you as to German nationals.

S1 Form (Formerly E106)

The S1 form (which replaced the older E106, E109, and E121 forms) is one of the most important documents in EU social security coordination. It entitles the holder to full healthcare in their country of residence at the expense of another member state. Unlike the EHIC, which covers temporary stays, the S1 provides comprehensive coverage for people who live in one EU country but are insured in another.

Who Gets an S1 Form?

  • Posted workers — employees sent by their employer to work temporarily in another EU country, who remain in their home country's social security system
  • Pensioners — people receiving a pension from one EU country who reside in another EU country
  • Frontier workers' family members — family members of cross-border workers who live in a different country from where the worker is insured
  • Civil servants — posted to another member state

How It Works in Practice

The S1 form is issued by the competent institution — the health insurer in the country that is financially responsible for your healthcare. For example, if you are a French pensioner moving to Germany, you request the S1 from your French health insurance body (CPAM or the relevant caisse).

Once you have the S1, you submit it to the Deutsche Verbindungsstelle Krankenversicherung — Ausland (DVKA) in Bonn, which is the German liaison body for international health insurance. The DVKA will register you and assign you to a German Krankenkasse of your choice. You then receive a German health insurance card (Gesundheitskarte) and can access the German healthcare system exactly like a locally insured person.

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Submit the S1 Promptly

Do not delay submitting your S1 form after arriving in Germany. The form establishes your entitlement to healthcare from day one of your residence. If you wait months to submit it, you may face a gap in coverage or difficulties accessing healthcare. The DVKA processes S1 registrations regularly, but the initial enrollment can take a few weeks, so start early.

Cost Sharing Between Countries

When you use healthcare in Germany with an S1, the costs are borne by the country that issued the S1 — not by Germany. The German Krankenkasse provides the treatment and then claims reimbursement from your home country's insurer through the DVKA. You do not see this process — it happens entirely between institutions. For you, the experience is identical to being normally insured in Germany.

A1 Certificate — For Posted Workers

The A1 certificate (formally: "Certificate concerning the social security legislation which applies to the holder") is the key document for Entsendung (posting of workers). It proves that a worker who is temporarily sent to another EU/EEA country remains subject to the social security legislation of their home country — including health insurance.

When You Need an A1

If your employer in, say, the Netherlands sends you to work in Germany for a project, you would normally become subject to German social security law under the Beschaeftigungslandprinzip. The A1 certificate is the exception: it allows you to remain in your home country's system for up to 24 months. This avoids the administrative burden of switching systems for short-term postings.

The A1 is also required for self-employed persons who temporarily perform their activity in another member state. Even for short business trips — attending a conference, meeting clients, or performing a few days of work — an A1 is technically required. Since 2019, enforcement has increased significantly, and some countries (notably France and Austria) impose fines for workers found without an A1 certificate.

The 24-Month Limit

The standard posting period under Article 12 of Regulation 883/2004 is 24 months. After that, the worker must switch to the host country's social security system. Extensions are possible through an Article 16 agreement (exceptional agreement between the two countries' competent authorities), but these are not automatic and require a formal application. If your posting is expected to exceed 24 months from the start, the A1 exception does not apply.

How to Obtain an A1

The A1 certificate is issued by the competent institution in your home country — typically the social security or health insurance authority. In the Netherlands, this is the SVB; in France, URSSAF or CPAM; in Poland, ZUS. Your employer usually handles the application before your posting begins.

The institution checks that the conditions are met: the worker is normally employed in the sending country, the posting is genuinely temporary, and the worker is not being sent to replace another posted worker. If approved, the A1 is issued and the worker carries it during the posting. In Germany, the A1 must be available for inspection — the German customs authority (Zoll) and Deutsche Rentenversicherung may request it during workplace checks.

S2 Form — Planned Treatment Abroad

The S2 form (formerly E112) covers planned medical treatment in another EU/EEA country. Unlike the EHIC, which covers treatment that becomes necessary during a temporary stay, the S2 is specifically for situations where you travel to another country with the intention of receiving treatment.

Prior Authorization Required

To receive an S2 form, you must obtain prior authorization from your home country's health insurer before traveling. The insurer will assess whether the treatment is medically necessary, whether it is available in your home country within a medically justifiable timeframe, and whether the treatment is covered under your home country's benefit basket.

Authorization cannot be refused if the treatment is among the benefits provided for by your home country's legislation and the treatment cannot be given within a medically justifiable time limit, taking into account your current state of health and the probable course of your condition. This is a critical patient right established by the European Court of Justice.

What It Covers in Germany

With an S2 form, you are treated as if you were insured in Germany. The treatment is provided under German conditions — meaning the same scope, quality, and co-payments as for GKV-insured patients. The costs are then claimed back from your home country's insurer. This typically applies to hospital treatment, specialized surgeries, or treatments with long waiting lists in your home country.

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Alternative: Cross-Border Healthcare Directive

In addition to the S2 route, the Cross-Border Healthcare Directive (2011/24/EU) allows EU citizens to seek healthcare in another member state and claim reimbursement from their home insurer — up to the amount the treatment would have cost at home. This does not require prior authorization for most outpatient care but does for hospital treatment. The key difference: under the Directive, you pay upfront and get reimbursed, while with the S2 form, the costs are handled institution-to-institution.

Pensioners from EU Countries

If you receive a pension from another EU member state and move to Germany, your healthcare situation depends on whether you also receive a German pension and which country's legislation applies to you.

Pension Only from Another EU Country

If you receive a pension exclusively from another EU country (e.g., you worked your entire career in France and now retire to Germany), you remain insured through your pension country's system. You request an S1 form from your home country's pension insurance or health insurance body. Once submitted to the DVKA in Germany, you are registered with a German Krankenkasse and receive a Gesundheitskarte. You are then insured aushilfsweise (on a substitute basis) — meaning you have full access to the German healthcare system, but the costs are borne by your home country.

Pensions from Multiple EU Countries

If you receive pensions from multiple EU countries, including Germany, you are generally insured in your country of residence. If you live in Germany and receive both a German and a foreign pension, German law applies. You will be enrolled in the Krankenversicherung der Rentner (KVdR) — the health insurance of pensioners — provided you meet the Vorversicherungszeit requirement (having been insured in the GKV for at least 90% of the second half of your working life). If you do not meet this requirement, you will be voluntarily insured in the GKV.

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Contributions for EU Pensioners

If you are insured aushilfsweise with an S1, you do not pay German health insurance contributions. Your home country's insurer covers the costs. If you are insured directly in the German GKV (because you also have a German pension), contributions are calculated on your total pension income — including pensions from other EU countries. The current contribution rate for pensioners in the GKV is approximately 14.6% plus the Zusatzbeitrag, with half paid by the pension insurance and half by you.

Students from EU Countries

EU students coming to Germany for their studies have several options for health insurance. The right choice depends on the duration of study, whether you are working alongside your studies, and a critical decision that is irrevocable.

EHIC for Temporary Study

If you are enrolled at a university in your home country and come to Germany for an exchange semester (e.g., Erasmus+), your EHIC from your home country generally suffices. You remain insured in your home country, and the EHIC covers medically necessary treatment in Germany. German universities accept the EHIC as proof of health insurance for enrollment purposes, though some universities are stricter than others.

Full Degree Studies — German Student GKV

If you are enrolling in a full degree program at a German university, you are subject to Versicherungspflicht in der studentischen Krankenversicherung — mandatory student health insurance. This costs approximately EUR 120 per month (including Pflegeversicherung) and provides full GKV coverage. You must join a German Krankenkasse and can choose freely among them.

The Befreiung — An Irrevocable Decision

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Warning: Befreiung Is Irrevocable

If you already have health insurance from your home EU country (via EHIC or an S1 form), you can apply for a Befreiung von der Versicherungspflicht (exemption from mandatory insurance). This allows you to keep your home insurance instead of joining the German student GKV. However, this exemption is irrevocable for the entire duration of your studies. If your home insurance later becomes insufficient, expires, or becomes too expensive, you cannot switch to the German student GKV. You would have to get private insurance at potentially much higher cost. Think very carefully before choosing the Befreiung.

The Befreiung must be requested within three months of enrollment or of the start of the insurance obligation. After the three-month window, you are automatically enrolled in the German student GKV. Many EU students choose the Befreiung because their home insurance is cheaper, but this can backfire if circumstances change — for example, if you turn 30 (when student GKV ends and you would need more expensive voluntary or private insurance anyway) or if your home country's rules change.

Working Alongside Studies

If you take up employment in Germany alongside your studies (more than a Minijob), German insurance obligation may arise through your employment, overriding your student status. The rules for Werkstudenten (working students) are complex — your student insurance or Befreiung may no longer apply if you work more than 20 hours per week during the semester.

Family Members

One of the most attractive features of the German GKV system is Familienversicherung — free co-insurance for family members. EU/EEA citizens are fully eligible under the same conditions as German nationals, thanks to the equal treatment principle of Regulation 883/2004.

Familienversicherung for EU Family Members

If you are an EU citizen working in Germany and insured in the GKV, your spouse and children can be covered through Familienversicherung at no additional cost, provided they:

  • Reside in Germany (or in some cases, another EU/EEA country)
  • Have no income or earn below the Geringfuegigkeitsgrenze (currently EUR 538/month for Minijobs or EUR 695/month for other income)
  • Are not themselves subject to mandatory insurance through employment
  • Are not insured through their own employment in another EU country

Children are covered through Familienversicherung until age 18, or until age 25 if they are in education or completing Bundesfreiwilligendienst (voluntary service). In some cases, coverage extends further for children with disabilities.

Family Members Living in Another EU Country

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Cross-Border Family Coverage

If your family members remain in another EU country while you work in Germany, the coordination regulation still applies. Your family can receive healthcare in their country of residence at Germany's expense. The process involves requesting an S1 form from your German Krankenkasse for your family members, which they then submit to the health insurer in their country of residence. This is common for frontier workers (Grenzgaenger) whose families stay in the neighboring country.

Children Studying in Another EU Country

If your child is covered by your German Familienversicherung and goes to study in another EU country, they retain their German coverage. They can use the EHIC for medically necessary treatment in the study country. If the study is a full degree program, they may need to register with the local system using an S1 form — the rules vary by country.

UK Citizens Post-Brexit

Since January 1, 2021, the United Kingdom is no longer part of the EU or the EEA. However, the EU-UK Trade and Cooperation Agreement (TCA) and the Withdrawal Agreement preserve many social security coordination rights — though with important limitations.

The Withdrawal Agreement — Existing Rights

UK citizens who were already living in Germany before December 31, 2020, and who were covered by the coordination regulation, retain their rights under the Withdrawal Agreement. This means their S1 forms, EHIC rights, and aggregation of insurance periods continue to apply. These are protected rights that cannot be unilaterally withdrawn.

The Trade and Cooperation Agreement — New Framework

For UK citizens who moved to Germany after January 1, 2021, the TCA provides a new (but more limited) framework:

  • Workers — UK citizens working in Germany are subject to German social security law, just like EU citizens. The Beschaeftigungslandprinzip applies. They are enrolled in the GKV under the same conditions.
  • EHIC equivalent — the UK Global Health Insurance Card (GHIC) provides rights similar to the EHIC for temporary stays. However, coverage may be more limited in practice.
  • S1 forms — still available for posted workers and pensioners under the TCA, though the administrative process may involve additional steps.
  • Aggregation of periods — insurance periods completed in the UK before and after Brexit count toward German eligibility requirements, and vice versa.
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Key Differences Post-Brexit

The TCA is less comprehensive than the coordination regulation. Notable differences: the Cross-Border Healthcare Directive no longer applies to UK citizens; the S2 form for planned treatment is more restricted; and family members' derived rights may be more limited. UK citizens planning to move to Germany should check the latest guidance from both the UK government (gov.uk) and the German DVKA, as implementing rules continue to evolve.

Switzerland

Switzerland is not an EU or EEA member state, but it participates in the social security coordination framework through a bilateral agreement with the EU that largely mirrors Regulation 883/2004. Swiss citizens and EU citizens moving between Switzerland and Germany benefit from similar coordination rules — aggregation of periods, export of benefits, and the one-country-at-a- time principle.

The Optionsrecht for Grenzgaenger

One unique feature of the Switzerland-EU arrangement is the Optionsrecht (right of option) for Grenzgaenger (cross-border commuters). If you live in Germany but work in Switzerland, you would normally be insured in Switzerland under the Beschaeftigungslandprinzip. However, Germany negotiated an exception: Grenzgaenger can opt to be insured in their country of residence (Germany) instead of in Switzerland.

This option must be exercised within three months of starting work in Switzerland. Once chosen, it remains in effect for as long as the cross-border work situation continues. The Optionsrecht is particularly attractive for people with families in Germany, as German Familienversicherung covers the whole family at no extra cost — Swiss insurance requires separate premiums for each family member.

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Swiss Health Insurance System

Unlike Germany's employer-based GKV system, Switzerland has a mandatory private insurance model (KVG/LAMal). Everyone must buy individual health insurance from a private insurer, and premiums are not income-based — they are flat-rate, varying by canton, insurer, and chosen deductible. Premiums for a family of four can easily exceed CHF 2,000 per month. This is why the Optionsrecht to stay in the German GKV is financially significant for many Grenzgaenger.

Practical Steps & Checklist for EU Citizens Arriving in Germany

Whether you are moving to Germany for work, retirement, study, or family reasons, the following checklist will help you navigate the health insurance process. The exact steps depend on your situation, but this covers the most common scenarios.

Before You Leave Your Home Country

  • Request your EHIC — even if you are moving permanently, carry a valid EHIC for the transition period. It covers you until your German insurance is activated.
  • Request an S1 form — if you are a pensioner, posted worker, or family member of a frontier worker, apply for the S1 from your home insurer before you leave. Processing can take weeks.
  • Obtain an A1 certificate — if you are being posted by your employer, ensure the A1 is in hand before you start work in Germany.
  • Gather documentation — bring proof of your insurance history (Versicherungsverlauf), any portable documents (S forms, A1), your birth certificate, marriage certificate, and children's birth certificates (for Familienversicherung).

After Arriving in Germany

  • Complete your Anmeldung — register your address at the Buergeramt within 14 days of moving in. You need your rental contract and the Wohnungsgeberbestaetigung from your landlord.
  • Choose a Krankenkasse — if you are starting employment, choose a statutory health insurer within two weeks. You can compare them online — they all cover the same base benefits, but differ in Zusatzbeitrag (supplementary contribution) and bonus programs.
  • Submit your S1 form — if applicable, send it to the DVKA (Deutsche Verbindungsstelle Krankenversicherung — Ausland, Pennefeldsweg 12c, 53177 Bonn). They will register you and connect you with a Krankenkasse.
  • Inform your home insurer — once your German insurance is active, notify your home country's insurer that you are now insured in Germany. Request confirmation in writing.
  • Apply for Familienversicherung — if your spouse or children are moving with you, apply for their co-insurance at your Krankenkasse. Bring marriage and birth certificates (with translations if needed).

Documents You'll Need

Essential Documents Checklist

  • Valid passport or national ID card
  • EHIC (European Health Insurance Card) from your home country
  • S1 form (if applicable — pensioners, posted workers)
  • A1 certificate (if posted by employer)
  • Employment contract (if moving for work)
  • University enrollment confirmation (if studying)
  • Proof of prior insurance periods from home country
  • Marriage certificate and children's birth certificates
  • Rental contract and Wohnungsgeberbestaetigung
  • Anmeldung confirmation (Meldebestaetigung)

Timeline

The ideal timeline for EU citizens moving to Germany:

  • 4–6 weeks before move — request S1 form and/or A1 certificate; ensure EHIC is valid; gather documents
  • Within 14 days of arrival — complete Anmeldung
  • Within 14 days of starting work — choose and register with a Krankenkasse
  • Within 3 months of enrollment — decide on Befreiung if applicable (students); apply for Familienversicherung
  • Within 1 month of German insurance activation — notify home country insurer; cancel or suspend home insurance
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Don't Panic About Gaps

The coordination regulation is designed to prevent gaps in coverage. During the transition from your home country's insurance to German insurance, your EHIC provides a safety net. If you fall ill before your German Krankenkasse has issued your Gesundheitskarte, go to the doctor with your EHIC and explain that you are in the process of registering. In most cases, the costs will be sorted out between institutions retroactively. The system is complex, but it is built to protect you during transitions.

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