Pillar 3a that saves you nothing
If you are taxed at source (Quellensteuer) and never file a tax return, paying into a 3a usually gets you no deduction — which is most of the point. The fix is a deadline you have probably never heard of.
For people who moved to Switzerland
Three pillars, a permit that changes your tax treatment, German words on every letter, and rules that work differently because you arrived mid-career. Ask about your situation and get a straight answer.
If you are taxed at source (Quellensteuer) and never file a tax return, paying into a 3a usually gets you no deduction — which is most of the point. The fix is a deadline you have probably never heard of.
Your pension certificate shows a large "buy-in potential". If you never belonged to a Swiss pension fund before moving here, you can only use 20% of your insured salary a year for the first five years.
A full first-pillar pension needs 44 contribution years from age 21. Arrive at 35 and you are permanently about a third short — and you can generally only buy back the last five years.
Leave for an EU/EFTA country and the mandatory part of your second pillar stays locked in Switzerland until around 60. Leave for anywhere else and you can usually take it all. Worth knowing before you buy in.
A question, a letter you did not understand, or just "where do I start".
Permit, canton, whether you are taxed at source, whether you were ever in a Swiss pension fund. A conversation, not a form.
A summary of your position, the steps worth taking, and the exact questions to put to an adviser. Yours to download.