What is the difference between permit B and permit L in Switzerland?

The L permit is for short-term residents (maximum 1 year) and is not renewable: if it expires, a new permit must be applied for. The B permit is for residence and is renewable: it allows longer residence and renewal is an ordinary procedure if conditions remain stable. Both are managed by the SEM at the federal level, but renewal takes place at the canton of residence.

When do I need to apply for the renewal of the B permit in the Canton of Aargau?

It is advisable to submit the renewal request 2-3 months before the expiry of the current permit. The request must be forwarded to the cantonal migration office of Aargau. If the permit expires without a renewal request, the resident loses the legality of residence.

What social contributions towards a B permit in Canton Aargau?

With permit B, the same contributions of a Swiss resident are paid: AVS/AI/IPG at 10.6% of the salary (5.3% employee, 5.3% employer), unemployment insurance (AD) up to the annual maximum, accident insurance according to the sector, and mandatory LAMal. All these payments count towards future social security entitlements.

Do I need to take out health insurance (LAMal) with a B permit?

Yes, health insurance is mandatory for all legal residents in Switzerland, including those who have allowed B. It must be taken out within 3 months of arrival. The insurance is private at per capita premiums and varies by canton; in the canton of Aargau it is possible to take advantage of cantonal premium reduction subsidies depending on income.

Does the B permit give me access to Swiss social security rights?

Yes, with permit B you accumulate the right to the AVS (old age and disability pension) for each year of payment. After 10 years of continuous residence in Switzerland, you can apply for the C permit (domicile), which is the first step towards an ordinary naturalization after another 10 years (or 8-18 years depending on the canton).

Residence permit B Aargau: requirements and renewal (cross-border guide)

Di Redazione Frontaliere Ticino · Published on 2 September 2026

Aargau cantonal administration office with Swiss residence permit documentation

Permit B is the renewable residence in Switzerland. Federal SEM procedure, cantonal office competence. Complete guide to requirements, renewal and deadlines.

Context

In brief

Permit B allows renewable residence in Switzerland for foreigners
Federal management through SEM (State Secretariat for Migration)
Renewal: cantonal migration office before expiration
Documents and duration remain at cantonal/federal level

Key facts

What: Permit B, renewable residence authorization for foreigners
Who: Foreigners residing and working legally in Switzerland
Where: Federal competence SEM, procedure at the canton (Aargau)
Validity: Determined period, renewable upon request to the canton
Reference: Federal law on migration, art. foreign permits

The residence permit B is the authorization that allows a foreigner to reside in Switzerland for a limited period. Unlike the permit L (short duration, maximum 1 year), the permit B is renewable and is issued to those who intend to establish a more lasting residence in the country. The permit C, on the other hand, represents permanent residence and is usually granted after 10 years of continuous residence (or 5 years for citizens of the European Union or the European Free Trade Association).

The management of foreign permits in Switzerland falls under the competence of the State Secretariat for Migration (SEM), which operates at the federal level. However, the concrete procedure for renewing the permit B in the Canton of Aargau takes place at the competent cantonal migration office. Each canton organizes its own offices and the related administrative procedures, although the regulatory framework remains federal.

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Operational details

The B permit cycle: what changes in practice

When a foreigner receives a B permit for the Canton of Aargau, they acquire the legal right to reside and work in the Swiss territory for the period indicated on the document. This right is subject to the maintenance of the conditions that led to the issuance: job stability, absence of criminal convictions, and payment of the prescribed social contributions (AVS/AI/IPG, LAMAL, and other contributions depending on the employment situation).

A significant difference between the B permit and other permits concerns the renewal procedure. In the case of the L permit, the short-term resident does not have the right to automatic renewal; they must instead apply for a new permit if they wish to stay. In the case of the B permit, however, renewal is an ordinary procedure that presupposes the continuation of the same working and social conditions. If the resident has maintained employment, paid taxes regularly, and has not violated criminal or civil norms, renewal is generally granted.

Tax and social security implications

Anyone holding a B permit in the Canton of Aargau is required to pay federal, cantonal, and communal taxes, as well as all mandatory social contributions. Aargau's taxation follows the Swiss three-tier system: direct federal tax managed by the Federal Customs Administration (AFC), cantonal tax managed by the cantonal administration, and communal tax based on the communal multiplier applied to the cantonal rate.

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Key points

How to proceed: step-by-step towards renewal

For those in the Canton of Aargau with a B permit nearing expiration, the renewal procedure begins by contacting the cantonal migration office. This is the competent authority for the entire administrative procedure in the canton. It is advisable to submit the request at least 2-3 months before the expiration date to allow the office time to process the application and request any additional documents.

The required documents for renewal will vary depending on the individual situation: current employment contract, tax return, certificate of good conduct (if required), proof of tax and contribution payments, and in some cases, proof of accommodation. The cantonal office will communicate the exact list of required documents during the procedure.

Implications for workers and residents

Those legally residing in the Canton of Aargau with a B permit have the same rights and obligations as Swiss residents in terms of contributions and taxes. This means full payment of income tax, wealth tax (if applicable in the canton), and capital tax, as well as contributions to social security (AHV/IV/EO, AD, AC, LAMal). At the same time, they accumulate pension rights: each year of AHV contributions counts towards future pensions.

Regarding mandatory health insurance (LAMal), anyone legally residing in Switzerland must take out insurance within 3 months of arrival. The insurance is private, with per capita premiums varying by canton and region of residence. In the Canton of Aargau, premiums may benefit from cantonal subsidies for premium reduction (premium subsidy) for those falling under certain income thresholds.

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Frequently Asked Questions

What is the difference between permit B and permit L in Switzerland?: The L permit is for short-term residents (maximum 1 year) and is not renewable: if it expires, a new permit must be applied for. The B permit is for residence and is renewable: it allows longer residence and renewal is an ordinary procedure if conditions remain stable. Both are managed by the SEM at the federal level, but renewal takes place at the canton of residence.
When do I need to apply for the renewal of the B permit in the Canton of Aargau?: It is advisable to submit the renewal request 2-3 months before the expiry of the current permit. The request must be forwarded to the cantonal migration office of Aargau. If the permit expires without a renewal request, the resident loses the legality of residence.
What social contributions towards a B permit in Canton Aargau?: With permit B, the same contributions of a Swiss resident are paid: AVS/AI/IPG at 10.6% of the salary (5.3% employee, 5.3% employer), unemployment insurance (AD) up to the annual maximum, accident insurance according to the sector, and mandatory LAMal. All these payments count towards future social security entitlements.
Do I need to take out health insurance (LAMal) with a B permit?: Yes, health insurance is mandatory for all legal residents in Switzerland, including those who have allowed B. It must be taken out within 3 months of arrival. The insurance is private at per capita premiums and varies by canton; in the canton of Aargau it is possible to take advantage of cantonal premium reduction subsidies depending on income.
Does the B permit give me access to Swiss social security rights?: Yes, with permit B you accumulate the right to the AVS (old age and disability pension) for each year of payment. After 10 years of continuous residence in Switzerland, you can apply for the C permit (domicile), which is the first step towards an ordinary naturalization after another 10 years (or 8-18 years depending on the canton).