Germany — Residence Permit: 6-Month Absence Rule (§ 51 AufenthG)

Summary

Limit

6 months outside Germany (Aufenthaltserlaubnis and Niederlassungserlaubnis)

EU Blue Card

12 months (also for Blue Card family members)

Daueraufenthalt-EU

12 months outside the EU (24 for ex-Blue Card) / 6 years outside Germany

Way to extend

Longer period set by the Ausländerbehörde before departure

Effect

The residence title expires (erlischt) automatically

Basis

§ 51 Abs. 1 Nr. 6 and 7, Abs. 2, 4, 9, 10 AufenthG

A German residence title is tied to actually living in Germany. Under § 51(1) no. 7 of the Residence Act (Aufenthaltsgesetz, AufenthG), a title expires if the holder leaves Germany and does not re-enter within six months — or within a longer period the Ausländerbehörde has fixed in advance. The rule applies to the temporary Aufenthaltserlaubnis and to the permanent Niederlassungserlaubnis alike. The EU Blue Card gets twelve months, the Daueraufenthalt-EU has its own regime, and long-established residents are protected. Come back inside the window, or get the longer period approved before you leave, and your status is safe.

Who it applies to

This matters if you hold a German residence title and you are:

• Being sent abroad by your employer for a project, secondment or rotation of several months.
• Leaving for study, research, family care or a sabbatical outside Germany.
• A Niederlassungserlaubnis holder who assumes "permanent" means it can never lapse.
• A Blue Card holder or family member planning a long stay in your home country.

It applies to third-country nationals holding an Aufenthaltserlaubnis, Blaue Karte EU, ICT card, Niederlassungserlaubnis or Erlaubnis zum Daueraufenthalt-EU. EU/EEA and Swiss citizens live in Germany under free-movement rules and are not affected. It is an immigration rule about keeping your title alive, separate from German tax residency and from the absence limits for naturalisation.

The rule — and why it exists

§ 51(1) AufenthG lists the events that end a residence title. Two of them concern absence:

• No. 6 — leaving for good. The title expires when the holder leaves Germany for a reason that is not merely temporary in nature (aus einem seiner Natur nach nicht vorübergehenden Grund). Moving your home, family and job abroad ends the title on departure, even if you return for visits.
• No. 7 — staying away too long. The title expires when the holder has left and has not re-entered within six months, or within a longer period set by the Ausländerbehörde.

The Act then carves out exceptions: § 51(2) protects the Niederlassungserlaubnis of 15-year residents and spouses of Germans; § 51(4) obliges the authority to set a longer period where the stay abroad is in Germany's interest; § 51(9) gives the Daueraufenthalt-EU its own 12-month / 6-year regime; and § 51(10) extends the basic period to twelve months for the EU Blue Card, its family members, and 15-year residents aged 60 or over.

Why it exists: the title reflects a real centre of life in Germany. Six months is the legislature's line between a long trip and having moved away; the extension route recognises that German employers, universities and families sometimes need people abroad for longer.

Counting the days

This rule is about the length of a single, continuous stay outside Germany — not a yearly total of days abroad.

1. 1Start counting from the day you leave Germany on one trip.
2. 2Add up the consecutive time you remain outside the country without re-entering.
3. 3Once that single absence runs past six months (twelve for a Blue Card, or the longer period your Ausländerbehörde fixed), the title has expired.
4. 4A genuine re-entry into Germany ends the absence; the next departure starts a new count from zero.

The law uses calendar months, so six months from a 10 March departure ends on 10 September. Treat roughly 180 days as your warning line. Two cautions: first, the count is about re-entering Germany — time in other EU countries counts as absence for the ordinary titles (only the Daueraufenthalt-EU distinguishes inside/outside the EU); second, a brief return does not help if the departure itself fell under no. 6 as a non-temporary move.

Examples

Example 1 — over the limit, no extension

Ana holds an Aufenthaltserlaubnis for employment and takes an eight-month project in Brazil for a different company, keeping her Berlin flat. She does not ask the Ausländerbehörde for a longer period. After six months her title has expired under no. 7; when she flies back she is treated as a new arrival and needs a fresh visa and permit.

Example 2 — the longer period saves it

Kwame is posted to Nairobi for a year by his Munich employer. Before leaving he applies under § 51(1) no. 7 and § 51(4), showing the posting serves a German company; the authority sets a 14-month period. His title survives the whole assignment.

Example 3 — Niederlassungserlaubnis, long resident

Fatma has lived lawfully in Germany for 22 years with a Niederlassungserlaubnis, has a pension that covers her living costs, and spends 20 months caring for a parent in Turkey. Under § 51(2) her permit does not expire. She asks her Ausländerbehörde for a Bescheinigung confirming this before she returns, to avoid questions at the border.

Exceptions & edge cases

• Longer period set in advance (§ 51(1) no. 7, § 51(4)). The Ausländerbehörde may — and, where the stay serves German interests, must — fix a longer deadline. Postings for German-based employers, research stays and similar are the typical cases. It must be arranged before departure and cannot be granted once the title has expired.
• 15-year residents and spouses of Germans (§ 51(2)). A Niederlassungserlaubnis held by someone with at least 15 years of lawful residence, and that of their cohabiting spouse, does not expire under nos. 6 and 7 if their livelihood is secured and no serious expulsion interest exists. The Niederlassungserlaubnis of a foreigner married to and living with a German does not expire under those provisions if no such expulsion interest exists.
• EU Blue Card and family (§ 51(10)). Twelve months instead of six, for the Blue Card holder and for family members holding permits under §§ 30, 32, 33 or 36. Also twelve months for 15-year residents (and spouses) with a Niederlassungserlaubnis who are 60 or older.
• Daueraufenthalt-EU (§ 51(9)). Expires only after twelve consecutive months outside the territory where long-term resident status can be acquired (24 for former Blue Card holders and their family), after six years outside Germany, or on acquiring long-term status in another member state.
• Military service (§ 51(3)). A title does not expire under no. 7 if the absence is for compulsory military service in the home country and the holder re-enters within three months of discharge.
• Proof of continuation. Anyone relying on § 51(2) or on a longer period can ask the Ausländerbehörde of their last habitual residence for a certificate that the title continues — carry it when you travel back.

Because "not merely temporary" under no. 6 is judged on the facts — whether you gave up your flat, moved the family, deregistered — a long absence with loose ties is risky even inside six months. Check with the Ausländerbehörde or a lawyer before a stay that might look like leaving.

Common misconceptions

• "A Niederlassungserlaubnis is permanent and can't be lost." It is unlimited in time, but it still expires after six months abroad unless you fall under the 15-year or spouse-of-a-German protections or have a longer period approved.
• "Six months means 180 days per year." No — it is one continuous absence. Several shorter trips adding up to more than 180 days do not trigger no. 7 (though they may matter for other rules, such as naturalisation).
• "Staying in another EU country doesn't count." For an Aufenthaltserlaubnis or Niederlassungserlaubnis it does: the test is re-entering Germany. Only the Daueraufenthalt-EU distinguishes between time inside and outside the EU.
• "I'll just pop back for a weekend before the deadline." That ends the six-month count, but if your departure was in substance a permanent move, no. 6 already ended the title on the day you left.
• "I can apply for the extension from abroad after the fact." The longer period must be fixed before the title expires, in practice before you leave. Once expired, the only route is a new visa.

Frequently asked questions

Sources

• Gesetze im Internet — § 51 AufenthG (Beendigung der Rechtmäßigkeit des Aufenthalts)
• Berlin.de (Landesamt für Einwanderung) — Erlöschen eines Aufenthaltstitels bei einem Auslandsaufenthalt