Anyone who works temporarily from another European country as a digital nomad or workation participant will sooner or later come across the A1 certificate. It is the document with which a German body confirms that German social security law continues to apply for the duration of the stay abroad. Whether you need an A1 certificate as a digital nomad, who applies for it and when it can be issued at all depends on your status: employee, self-employed person, shareholder-managing director, or someone who has already left Germany.
This article treats the certificate as a practical instrument. The fundamental question whether, and for how long, German health, pension and long-term care insurance continue after a move abroad is the subject of the article Digital nomads and social insurance liability. Here the focus is on requirements, application, proof, checks and typical mistakes. The legal position is as at September 2026; authority practice and procedures change, so you should check the current information from the competent institutions before applying.
What the A1 Certificate Is and What It Is Not
The A1 certificate (also called “posting certificate” or “Portable Document A1”) is issued by the competent social security institution. It proves to the authorities in the state of activity that you do not have to pay contributions there because you are subject to the system of your home state. The legal basis is Regulation (EC) No 883/2004 together with Implementing Regulation (EC) No 987/2009; in Germany, national provisions of the SGB IV (German Social Code, Book IV) supplement the procedure.
It is important to distinguish it from other documents and rules:
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| Question | A1 certificate | Other rule |
|---|---|---|
| Which social security law applies? | Yes, it certifies this | Not medical treatment itself |
| Medical treatment abroad | No | European Health Insurance Card (EHIC) for medically necessary treatment; it does not replace travel health insurance for abroad |
| Tax residence | No | Residence, habitual abode, double taxation treaties |
| Residence or work permit | No | Visa or residence title of the destination country |
| Employment law, false self-employment | No | Status examination under German and, where applicable, foreign law |
The A1 is thus no free pass, but proof of exactly one question: the applicable social security law. Tax law follows its own rules; details are in the article Home office abroad: tax law and, on the 183-day question, in the article 183-day rule and habitual abode.
Where It Applies: EU, EEA, Switzerland and the United Kingdom
Regulation 883/2004 coordinates the systems of the EU member states, the EEA states Iceland, Liechtenstein and Norway, and Switzerland. According to the German Pension Insurance (Deutsche Rentenversicherung), the A1 procedure also applies in relation to the United Kingdom (on the basis of the Trade and Cooperation Agreement). The principle is: only one state is ever competent, and you cannot choose it freely. Without a special rule, the law of the state in which you actually work applies (principle of the place of employment, Article 11 Regulation 883/2004). The A1 is the exception that keeps you in the German system.
For destinations outside this area, such as Asia, North or South America, there is no A1 certificate. There, a bilateral social security agreement or, without one, the “spill-over” rule (Ausstrahlung) under Section 4 SGB IV may apply. Both have their own evidence requirements and considerably narrower conditions; the details are in the above-mentioned article on social insurance liability. Anyone working outside Europe must in case of doubt clarify their own coverage, and a reference to “A1” then does not help.
Who Needs an A1 and When None Is Needed
The German Pension Insurance names employees, civil servants and self-employed persons as the people who regularly need an A1 for temporary cross-border activity in European countries. What is decisive is the gainful activity, not the stay:
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| Situation | A1 required? |
|---|---|
| Employee works three weeks from home from a holiday house in an EU state | As a rule yes, provided the conditions for a posting are met |
| Self-employed person temporarily works for German clients from another EU state | Yes, provided he is to remain subject to the German system |
| Pure holiday without any work performance | No |
| Short stay of a few days with work | In principle yes; duration alone does not exempt |
| Work outside the EU/EEA/Switzerland/UK | No A1 possible; examine other legal bases |
The checking practice of the destination states varies; enquire in advance with the institution of the destination state. Where there is an obligation to carry or present it, the certificate (digital or printed) belongs in your luggage. Procedures and sanctions are regulated by each state itself.
Employees Working From Home or on a Workation: The Employer Applies
As a rule the employer files the application; a separate application by the employee is not provided for. It is filed electronically through the payroll software or the sv.net completion aid with the competent health insurance fund. For persons with private insurance or not covered by statutory insurance, the German Pension Insurance may be competent. Since 1 January 2025, according to the Pension Insurance, only electronic application is permitted; paper applications are no longer accepted.
The typical procedure for a workation looks like this:
- The employee notifies the HR department of the planned stay (destination state, period, place of work).
- The employer checks whether the conditions for a posting under Article 12 Regulation 883/2004 are met and whether it agrees to the work abroad at all.
- The application is filed electronically.
- The certificate is transmitted to the employer and made available to the employee.
A written workation policy makes sense for employers: who may go where, for how long, who reports what, who bears costs. It does not replace an individual check, for example for employees whose residence status or activity is tied to a particular place.
On duration: for a posting the period is at most 24 months (Article 12(1) Regulation 883/2004); a longer exception agreement under Article 16 Regulation 883/2004 is possible on application (see the article on social insurance liability of digital nomads). For a workation of a few weeks this framework is unproblematic; what matters more is whether the activity abroad is really temporary.
Special Case of Teleworking: The Multilateral Framework Agreement
Since 1 July 2023 a special rule exists for a particular case. Under the multilateral framework agreement on cross-border teleworking, employees who usually work in their state of residence may work there for at least 25 percent and less than 50 percent of their working time and still remain in the social security system of the employer’s state. Both states must have acceded to the agreement. According to the DVKA (German Liaison Body for Health Insurance Abroad, part of the GKV-Spitzenverband), an application is filed electronically by the employer, can be filed up to three months retroactively provided contributions were paid throughout that time, and applies for at most three years, extendable.
For digital nomads this rule is of limited relevance. It concerns persons with a fixed residence in another contracting state and, according to the DVKA, excludes self-employed persons, civil servants and persons who regularly work in a third country. Anyone who travels without a fixed residence anyway will hardly benefit from it.
Self-Employed Digital Nomads and Freelancers: Own Application, Own Hurdles
Most digital nomads are not employed but self-employed. Three particularities apply to them.
Application via the SV reporting portal. Since 1 January 2022, self-employed persons are required to file the application electronically via the SV reporting portal (sv.net). For those with statutory health insurance, the health insurance fund is regularly competent; for those with private insurance and in further cases, the German Pension Insurance; in the case of habitual multiple activity (see below), the GKV-Spitzenverband (DVKA).
Requirement: habitual activity in Germany before the stay. Article 14(3) of Implementing Regulation 987/2009 requires that a self-employed person usually carries out substantial activities in the sending state and had begun them some time before the stay abroad. Anyone who registered a business only shortly before, or who was mostly not active in Germany at all, often does not meet the conditions. In addition, the activity abroad must be temporary and resemble the previous activity (Article 12(2) Regulation 883/2004). Whether the activity is “similar” is judged by its actual nature, not by its legal classification in the destination state (Article 14(4) Implementing Regulation).
Several states at once. Anyone who habitually works in several member states falls under Article 13 Regulation 883/2004. According to the German Pension Insurance, the certificate can be issued in cases of habitual multiple gainful activity for up to five years; as a guideline it cites at least one day per month or five days per quarter in several states. For residents of Germany, according to the German Pension Insurance, the GKV-Spitzenverband (DVKA) is competent for this certificate, irrespective of the health insurance relationship; self-employed persons apply for it exclusively via the SV reporting portal. For nomads with a German residence and clients in several countries, this may be the appropriate constellation.
Not every nomad meets these conditions. Anyone who has left Germany without any intention of returning and has given up the apartment is usually no longer working “temporarily” abroad; the centre of interests and the provision of Article 11 or 13 then matter. How residence and habitual abode relate to this question is shown in the article Digital nomad and habitual abode. Nor do you receive an A1 “in stock” for a lifestyle, but for a specific, provable constellation.
False Self-Employment and Status: Why the A1 Depends on It
Whether you are self-employed at all co-determines which institution is competent and which certificate it issues. Criteria include being subject to instructions, integration into the client’s business organisation, a single client over a long period, and a fixed, salary-like remuneration instead of fluctuating billing by performance. If you meet these characteristics, it may turn out afterwards that, for social security purposes, you were an employee, with back-claims against the client. The certificate has no “curing effect” for this allegation. Anyone who works for only one client and presents this outwardly as a full-time activity should have the status checked in advance. Invoicing through your own GmbH does not automatically protect you; what matters is the overall picture of the actual circumstances.
Timing of the Application: Before Departure, Not Only at the Check
Under Article 15 of Implementing Regulation 987/2009, the application should be filed in advance whenever possible. In law, subsequent issue is possible in certain cases. For short business trips of up to seven days, for instance, the certificate can, according to the Pension Insurance, also be applied for retrospectively. Under the teleworking agreement, retroactive application up to three months is provided for. You should not rely on this: without a certificate at a check, enquiries, contribution claims by the state of activity and, in the worst case, sanctions on the spot are threatened. Processing time varies, so allow several weeks.
Binding Effect and Checks in the Host State
According to settled case law of the Court of Justice of the European Union, a validly issued A1 binds the authorities and courts of the state of activity for as long as it has not been withdrawn or declared invalid. The binding effect is not unlimited, however: in its judgment of 6 February 2018 (Case C-359/16, Altun), the Court held that a court of the host state may disregard a certificate if it was obtained or relied on fraudulently and the issuing institution was previously involved but its examination did not dispel the doubts. For you this means: the information in the application must be accurate. An A1 based on false information (for example about residence, client or activity) does not protect you.
Common Mistakes in Practice
- A1 applied for, but no prospect of return. Anyone who gives up the German residence and travels permanently often does not meet the posting requirements.
- Expecting the A1 to solve the tax issue. It says nothing about residence, permanent establishment or tax liability; on the latter, see Permanent establishment through a home office abroad.
- Confusing health insurance cover with the A1. Anyone who falls ill abroad additionally needs proof such as the EHIC or travel health insurance, in particular for repatriation and non-essential treatment.
- Cancelling statutory health insurance too early. The A1 presupposes continuing German insurance; the consequences of cancelling are explained in the article Cancelling German statutory health insurance on emigration.
- Wrong classification as self-employed where there is in fact a duty to follow instructions (see above).
- No coordination with the client. Especially with clients from the destination state, its social security institution may ask questions; the certificate must then be available.
- Applied for too late. Without a certificate, enquiries and contribution claims are threatened. With frequent stays, you should clarify early whether there is multiple activity under Article 13.
What Remains if the Application Is Refused or the Conditions Are Not Met
If the A1 is not issued because, for example, there is no posting, the law of the state of activity applies. You then owe contributions there and must register under its rules; advice on foreign social security law can only be given by an adviser on the spot. In parallel, it must be clarified whether your German insurance continues or ends. You should also keep in view the pension gap that arises from gaps in contributions, see German statutory pension insurance on emigration.
Checklist Before Applying
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| Step | Question to check |
|---|---|
| 1. Destination state | EU, EEA, Switzerland, United Kingdom? Otherwise no A1 |
| 2. Status | Employee, self-employed, multiple activity? Rule out false self-employment |
| 3. Link back | Does the German business or the employment relationship continue and is a return planned? |
| 4. Insurance | Do the German health/pension insurance continue? |
| 5. Duration | Temporary, within 24 months, or exception agreement? |
| 6. Application | Electronic (employer or SV reporting portal), in good time before the trip |
| 7. Proof | Carry the certificate digitally and printed; ask about the destination country’s requirements |
| 8. Additional cover | EHIC and, where applicable, private travel health insurance |
| 9. Tax, visa | Check separately; the A1 replaces neither |
Conclusion
For digital nomads who work temporarily in a European country, the A1 certificate is the central proof document of social security law, but it is tied to conditions: habitual activity in Germany, an only temporary activity abroad and accurate information in the application. Employees depend on their employer’s application; self-employed persons apply electronically themselves. Outside the EU, the EEA, Switzerland and the United Kingdom, the A1 does not exist. Anyone who travels permanently without a prospect of return should carefully clarify the question of social insurance and residence before applying for certificates.
Frequently Asked Questions
Do I always need an A1 certificate as a digital nomad?
No. You need it for temporary gainful activity in an EU or EEA state, Switzerland or the United Kingdom if you want to remain subject to German social security law. For pure holiday stays without work and for countries outside this area there is no A1.
Can I apply for the A1 certificate retrospectively?
In principle the application should be filed in advance. For short business trips of up to seven days, retrospective application is provided for; under the teleworking framework agreement up to three months retroactively. For self-employed persons, you should file the application before departure and not rely on retrospective issue.
Who files the application: me or my client?
For employees, the employer, electronically via sv.net or the payroll software. Self-employed persons file the application themselves via the SV reporting portal, whereby for those with statutory insurance the health insurance fund is regularly competent, and for those with private insurance the German Pension Insurance.
Does the A1 replace health insurance abroad?
No. It only confirms that German social security law applies. For treatment abroad you additionally need the EHIC or private travel health insurance that also covers repatriation.
Does the A1 also apply in Asia, America or Africa?
No. It is limited to the EU, the EEA, Switzerland and the United Kingdom. For other states, bilateral social security agreements or the spill-over rule under Section 4 SGB IV matter; you should have foreign law checked on the spot.
What happens if I cannot present an A1 at a check?
The host state may demand contributions or impose sanctions under its own law. Have yourself informed before the trip about the destination country’s proof requirements and carry the certificate digitally and printed.
The Fiala law firm has published extensively on international tax and exit law and supports clients in legally classifying the tax and social security consequences of working abroad and of emigration. Digital nomads who wish to have their situation assessed individually can contact the firm for an initial consultation without obligation.
