The map in plain English
Pillar 2 is tied to your job. If you are employed and earn above the relevant thresholds, your employer pension fund is usually part of your compensation package.
Pillar 3a is private restricted retirement saving. You open it yourself with a bank, foundation, insurance company, or digital provider and may receive a tax deduction within the annual limit.
Vested benefits are what often happens when occupational pension money needs to be parked outside an active employer pension fund. This can happen after a job change, career break, or departure from Switzerland.
Why expats get confused
All three buckets can involve retirement money, Swiss tax, blocked access, and withdrawal rules. But they do not have the same source, provider type, contribution logic, or exit treatment.
A person may have Pillar 2 from employment, Pillar 3a from private contributions, and a vested-benefit account after leaving a job. The paperwork may arrive from different foundations, each with its own forms.
The practical step is to list each account separately. Do not call everything 'my Swiss pension'. Label the account type, provider, balance, investment allocation, and withdrawal conditions.
What to check before relocation
Before leaving Switzerland, make a pension inventory. Include employer pension certificates, 3a tax certificates, vested-benefit statements, and provider contact details.
Then ask which accounts can be withdrawn, which must remain, which can be transferred, and which tax authority will tax the payout. Pillar 2 and Pillar 3a can have different restrictions, especially around EU/EFTA moves.
A clean inventory is not exciting, but it prevents costly confusion during an already stressful relocation.
If you are not sure what an account is, ask the provider for the formal account type in writing. That is better than relying on app labels, because the legal category drives transfer options, withdrawal rules, and tax paperwork.
A useful inventory also records who controls each account after a job change. Employer pension funds, vested-benefit foundations, and 3a providers may all require different signatures, addresses, and tax certificates.