Switzerland — Residence Permit: 6-Month Absence Rule

Summary

B permit (residence)

Lapses after 6 months abroad

C permit (settlement)

Lapses after 6 months abroad

L permit (short stay)

Lapses after 3 months abroad

Tracked as

180 consecutive days (conservative)

Short returns

Do not legally interrupt the period

C only

Maintainable up to 4 years, on request

Basis

Art. 61 para 2 AIG (SR 142.20)

Swiss residence permits die on a clock. Under Art. 61 para 2 of the Foreign Nationals and Integration Act (AIG/LEI, SR 142.20), if you leave Switzerland without deregistering, a short-stay L permit lapses after three months and both the B (residence) and C (settlement) permits lapse after six months — in one and the same statutory sentence, with one and the same arithmetic. It happens automatically: no decision, no warning letter. And the trap most people miss is that a quick trip back to Switzerland does not restart the count once you have actually moved away (Art. 79 para 1 VZAE). Only the C permit can be rescued in advance, by asking your canton to maintain it for up to four years before the six months are up.

Who it applies to

This is the rule to watch if you hold a Swiss permit and are spending a long stretch outside the country. It matters most if you are:

• A C permit (Niederlassungsbewilligung / permis d'établissement) holder taking a posting, sabbatical, or extended family stay abroad.
• A B permit (Aufenthaltsbewilligung / permis de séjour) holder working abroad for a season and planning to come back.
• An EU/EFTA national with a Swiss permit — the six-month tolerance is the same under the free-movement agreement.
• An L permit holder, where the line is much earlier: three months.
• Anyone who has already left and is flying back occasionally, assuming those visits keep the permit alive.

It does not apply to Swiss citizens, and it is separate from tax residency: you can lose your permit while still being treated as a Swiss tax resident, and you can stop being tax resident while your permit is perfectly valid. Those are different tests under different laws — see Switzerland's 30/90-day tax residency rule.

The rule — and why it exists

One sentence, three permits

Art. 61 para 1 AIG lists the ways a permit ends: you deregister, you receive a permit in another canton, your term of validity expires (B permits), you are expelled, or — under letter (b), fleshed out in para 2 — you leave the country. Para 2 sets the periods:

• Short-stay (L) permit: three months. The earliest and easiest line to cross.
• Residence (B) permit: six months. Note that a B permit also ends when its validity term runs out, and unlike C it cannot be maintained from abroad.
• Settlement (C) permit: six months — but on request the canton may keep it alive for up to four years.

Because B and C sit in the same sentence with the same number, there is nothing to tell apart in day terms — the difference is only in what you can do about it. That is why Bounded ships one Swiss residence-permit counter rather than two.

It happens by itself

Expiry under Art. 61 operates ex lege — by force of law. The Federal Supreme Court's leading decision 2C_609/2011 confirms that the permit is simply gone once the period elapses; the authorities do not have to issue anything, and there is no discretion to exercise. The reason for the absence is irrelevant, including absences that were not your choice.

Why it exists: a Swiss permit records that you actually live in Switzerland. The six-month rule is how the law distinguishes a resident who travels from someone whose life has moved elsewhere but who would like to keep the paperwork.

Counting the days

The statute counts calendar months, not days — "six months" from a departure date is somewhere between 181 and 184 days depending on which months you cross (1 September to 1 March in a non-leap year is the short end; 1 March to 1 September is the long end). Bounded therefore tracks the rule as 180 consecutive days abroad: the largest day count that is safe whatever your departure date. That is a deliberate, labelled approximation, and it errs on the safe side — the counter warns you up to three or four days before the statutory lapse, never after.

1. 1Start from the day you left Switzerland — the run is measured from your departure, not from the start of a month or a year.
2. 2Count the consecutive days you are outside Switzerland. Bounded flags you at 181 days; the statutory line is six calendar months.
3. 3Do not assume a short trip back resets it. Art. 79 para 1 VZAE excludes temporary visit, tourism, and business stays from interrupting the period.
4. 4If you hold a C permit and the absence will run long, file the maintenance request with your canton BEFORE the six months elapse (Art. 79 para 2 VZAE).

The reset caveat, stated plainly. A day counter resets the run whenever you log a day in Switzerland. The law does not, once your centre of life has moved abroad. So treat any reset produced by a short visit as optimistic: it may keep the counter green while the legal clock keeps running. If you have genuinely left, count from the day you left.

Scattered absences are a different question. The six-month rule is about one uninterrupted run; adding up separate trips does not generally lapse a permit. But spending less than about half the year in Switzerland over several years creates a rebuttable presumption that your centre of life is elsewhere, which the authorities can act on separately (see 2A.31/2006 and BGE 145 II 322). The counter measures the consecutive run; the pattern is your own judgement call.

Examples

Example 1 — the five-month posting

Elena holds a C permit in Basel and takes a five-month contract in Singapore, then flies home. Her longest unbroken absence is around 150 days, comfortably inside six calendar months, so her settlement permit is untouched and she had nothing to file.

Example 2 — the weekend that did not help

Tomas gives up his Zurich flat, moves to Prague for a new job, and flies back to Switzerland for a long weekend every couple of months to see friends. His day counter resets each visit and looks healthy. The law disagrees: because he has left Switzerland for good, those visit stays do not interrupt the Art. 61 period (Art. 79 para 1 VZAE), and his B permit lapses six months after he moved.

Example 3 — the C permit that was saved in time

Amina is sent to Nairobi for two years. Four months into the assignment — well before the six months are up — she files a maintenance request with her cantonal migration office, showing she intends to return. The canton keeps her C permit alive for the assignment. Her colleague on a B permit had no such option and had to reapply on return.

Exceptions & edge cases

• Maintaining a C permit (Art. 61 para 2 AIG, Art. 79 para 2 VZAE). The canton may keep a settlement permit valid for up to four years, on request. The request must be filed before the six-month period ends; a timely request suspends the lapse in principle (2A.86/2004), but the grant is discretionary (Art. 96 AIG) and turns on a genuine intention to return (2C_461/2012). Cantonal practice adds conditions of its own — Zurich, for example, expects you to have lived in Switzerland again for at least as long as a previous maintenance lasted before granting a new one. That is cantonal practice, not statute; ask your own canton.
• B permits cannot be maintained. There is no equivalent mechanism, and a B permit also ends at the expiry of its validity term (Art. 61 para 1 lit. c AIG).
• Posted workers. Employees sent abroad by a Swiss employer who remain in the Swiss social-security system (BSV/OFAS certificate) are the classic maintenance case, and cantons treat these requests favourably — but the request still has to be made.
• Children schooling abroad. Cantonal practice generally allows a settlement permit to be maintained for a child educated abroad for up to about four years, provided the child spends holidays in Switzerland. Again: practice, not statute.
• Getting a C permit back after it lapsed. Art. 61 VZAE ("Erneute Erteilung der Niederlassungsbewilligung nach Auslandaufenthalt") allows a new settlement permit if you previously held a C permit for at least ten years and the absence lasted no more than six years, with language competence at A2 spoken and A1 written. Outside that, Art. 34 para 3 AIG allows earlier Swiss residence to be credited toward a future C permit, and Arts. 49–51 VZAE set out readmission relief for defined groups.
• EU/EFTA nationals. Annex I Art. 6(5) FZA gives the same six-consecutive-month tolerance, so there is no separate day count to learn. Art. 61a AIG — expiry of an EU/EFTA permit after involuntary unemployment — is an entirely different rule and is not what this counter tracks.

Maintenance requests, re-issuance after a lapse, and centre-of-life arguments all turn on documented facts and cantonal discretion. If your absence is going to run long, talk to your cantonal migration office (or a Swiss immigration lawyer) before the six months are up — after the lapse there is much less to work with.

Common misconceptions

• "A weekend in Switzerland resets the six months." It does not. Art. 79 para 1 VZAE expressly says temporary visit, tourism, and business stays do not interrupt the Art. 61 para 2 periods once you have moved abroad.
• "They have to notify me before my permit is cancelled." No — expiry is automatic by operation of law (2C_609/2011). It applies even when the absence was involuntary (2A.14/2004).
• "My scattered trips will add up to six months and kill my permit." Generally not: the rule is about one continuous absence. A long-run pattern of spending under half the year in Switzerland is a separate centre-of-life problem, not this arithmetic.
• "EU citizens are exempt." They are not. The FZA applies the same six-consecutive-month tolerance (Annex I Art. 6(5)).
• "A B permit can be put on hold like a C permit." No. The four-year maintenance option in Art. 61 para 2 exists for the settlement (C) permit only.
• "Keeping my permit keeps me tax resident" (or the reverse). The two are independent. Swiss tax residency follows Art. 3 DBG and the 30/90-day stay test, not your permit status.

Finally, note that the same six-month absence does double damage if you are still working toward the C permit: it does not just lapse the permit you hold, it also restarts the "last five years without interruption" clock that qualifying for settlement requires — see Switzerland's C permit residence requirement. And it ends a period of registered residence for citizenship purposes too (Art. 33 para 3 BüG). If you are building toward a Swiss passport, see Switzerland's citizenship residence requirement.

Frequently asked questions

Sources

• Fedlex — Foreign Nationals and Integration Act (AIG/FNIA, SR 142.20), Art. 61
• Fedlex — Verordnung über Zulassung, Aufenthalt und Erwerbstätigkeit (VZAE, SR 142.201), Art. 61 & 79
• Fedlex — Freizügigkeitsabkommen CH–EU (FZA, SR 0.142.112.681), Anhang I Art. 6
• Canton Zurich, Migrationsamt — Weisung «Erlöschen der Bewilligung»
• Canton Lucerne, Migrationsamt — Merkblatt «Aufrechterhaltung der Niederlassungsbewilligung»