AVS and complementary services in the canton of Aargau (cross-border guide)

First pillar of Swiss social security: AHV pension, calculation on contributory history, contributory gaps and supplementary benefits for minimum subsistence.
Context
In a nutshell
- The AVS pension is the first pillar of Swiss social security
- Contribution gaps reduce the amount of the annuity
- Complementary benefits fill the gap between annuity and minimum subsistence
Key facts
- What: AVS System (Old Age and Survivors Insurance)
- Who: UFAS/BSV oversees social security in Switzerland
- When: Contributions paid throughout the working career
- Where: Each canton (including Aargau) has a compensation fund
- Amount: Income calculated on contribution history; supplementary benefits supplement
The first pillar of Swiss social security, managed by the UFAS/BSV (Federal Office of Social Insurance), is based on a mechanism of contributions paid during the entire working career. Each canton, including the canton of Aargau, has a cantonal compensation fund that administers these contributions and determines the amount of the AVS pension.
How the AVS annuity is calculated
The AVS pension is not fixed: it depends directly on the number of years of contribution paid to the system. Each working year contributes to the final calculation of the service. Those who have paid contributions for their entire career receive the maximum amount; those who have contribution gaps receive a reduced income.
Contribution gaps may result from:
- Unemployment periods not covered
- Years in which the contribution has not been paid for administrative reasons
- Move between cantons without
Operational details
Calculation of the pension and effects of gaps
The procedure for calculating the AVS pension follows a uniform national scheme, although it is administered at the cantonal level. The UFAS/BSV defines the parameters; the cantonal compensation fund of Aargau (like any other) applies the formulas to individual cases. To obtain an approximate simulation, you can use the pension calculator available online.
A full year of contributions paid corresponds to one year of contribution. Are there missing contributions? Each missing year proportionally reduces the final pension. Someone who has paid 42 years of contributions out of 45 years of working life will have a reduction in the final pension.
There are mechanisms for filling gaps: it is possible to voluntarily pay back contributions, but within certain deadlines and limits set by law. Not all missing years can be recovered; the system provides well-defined deadlines.
Supplementary benefits and minimum living standard
Supplementary benefits come into play when the combination of:
- AVS pension
- Income from other sources (possibly)
- Movable/immovable assets
does not reach the minimum threshold set by cantonal law (with federal guidelines). The cantonal compensation fund processes the application and verifies the right.
The amount of the supplementary benefit is the difference between the recognized minimum living standard and the AVS pension received. It is not a fixed contribution but calculated case by case based on the economic situation.
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Key points
How to verify your contribution history
The first step is to request an extract of your contribution history from the cantonal compensation fund of the canton of Aargau (or the canton of your current residence, if you have moved). This extract indicates:
- Number of years of contributions paid
- Recognized gap years
- Amount of pension calculated at the time of request
You can obtain the extract by visiting in person, by mail, or through the online portal of the fund (where available). Many funds offer digital services to view your personal file in real-time.
Procedure to request supplementary benefits
If the extract shows a low pension or if you know that you will live on an insufficient pension, you can apply for supplementary benefits:
1. Gather documents: copy of the AVS pension decision, income statement, bank statement, real estate ownership certificate (if owner).
2. Fill out the PC application form provided by the cantonal compensation fund.
3. Submit the application to the fund (by mail, email, or counter).
4. Wait for the review; the fund will assess the need according to the established legal criteria.
Terms and deadlines
Supplementary benefits start from the month following the submission of the application (not retroactive, except for specific exceptions). It is advisable to submit the application before retirement or immediately after receiving the AVS pension decision, to avoid losing months of coverage.
The cantonal compensation fund remains available for telephone consultation, by email, or through a physical counter. Official websites and helplines provide updated information on forms and deadlines.
To deepen the calculation of your AVS pension and compare contribution scenarios, use the pension calculator — a tool that helps you plan your retirement.
Frequently Asked Questions
- What is the difference between complementary benefits and AVS annuity?
- The AVS annuity is the right acquired through contributions paid during the career. Supplementary benefits are a supplement provided only if the annuity does not cover the minimum living wage established by law. They are not automatic: they must be requested and the cantonal compensation fund verifies the need of the interested party.
- Can I fill the contribution gaps before asking for the annuity?
- Yes, voluntary contributions may be paid in arrears, but within certain deadlines and limits set by federal law. Not all missing years can be made up. The cantonal clearinghouse provides information on the terms applicable in your specific case.
- Where do I go if I have questions about my tax history in the canton of Aargau?
- You apply directly to the cantonal clearing house in the canton of Aargau (or the canton where you currently reside). You can contact her by phone, email, physical counter or online portal. The UFAS/BSV also provides general information and links to regional contacts.