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Attention!

Fraudulent emails are currently circulating in the name of OASI.

Updated on 29 Sept 2026

These messages state that your OASI insurance certificate has expired and invite you to renew it online. This is a phishing attempt aimed at obtaining your personal and sensitive data.

Published on 6 March 2025

Declaring your income and assets

As a member, you must declare your income and/or assets every year to determine the amount of your contributions.

How do I obtain the income and assets declaration (I+A)?

  • Each year, in January, you will receive your I+A either by e-mail or by post
  • If you have not received your I+A, please contact us by e-mail or by post

  • I+A declarations are processed in order of arrival

How do I complete the I+A?

  • According to your professional situation abroad: with or without gainful employment

  • If you have worked for less than 9 months or at a rate of less than 50%, please provide us with your income and your assets

  • A copy of the supporting documents must be enclosed with the I+A

How do I submit the I+A?

Online: via the eCdC portal

  • Only those insured under the voluntary OASI/DI scheme registered with a Swiss consular representation have access to the eCdC portal.
  • Students insured under the compulsory OASI/DI/EO scheme do not have access to the eCdC portal.

By e-mail in pdf format

By post:

Swiss compensation Office SCO
Voluntary Insurance - Contributions
Av. Edmond-Vaucher 18
P.O. Box 3100
1211 Geneva 2
Switzerland

Please do not use the following when sending documents: staples, paper clips, drawing pins, post-it notes, highlighters and pencils.

Submission deadline

The deadline for submitting your I+A is 31 march of the following year.

Consequences of late submission

  • End of April – 1st reminder
  • End of June – 2nd reminder
  • End of August – Default taxation decision
  • End of December – Exclusion from the voluntary OASI/DI scheme