What documents are needed to open a 3rd pillar?

You need a valid identity document (ID card or passport), proof of address (utility bill, residence certificate) and, depending on the provider, a pension fund affiliation certificate (to determine your 3a limit). For cross-border workers, a G work permit is also required.

When is the best time to open a 3rd pillar?

The best time is as early as possible in the year, ideally in January. The earlier you contribute, the more your capital benefits from investment returns. At the start of a career, each additional year of saving has a huge impact thanks to compound interest. Do not put it off until tomorrow -- start now.

Can you open a 3rd pillar online?

Yes, many banks and pension platforms allow you to open a 3rd pillar entirely online. The process generally takes 10 to 15 minutes and includes a video identity verification or ID document check. Some insurers still require a physical signature.

Is there a minimum amount to open a 3rd pillar?

It depends on the provider. Some banks require no minimum amount, others ask for an initial deposit of CHF 100.- to CHF 500.-. For insurance, a minimum premium is generally required (CHF 1,200.- to CHF 1,800.- per year). Check with your chosen provider.

How to Open a 3rd Pillar in Switzerland: Step-by-step Guide

Opening a 3rd pillar is a simple process that can be completed in a few days, or even a few minutes online. This guide accompanies you step by step, from initial reflection to your first contribution.

Conditions for opening a pillar 3a

To open a pillar 3a, you must meet the following conditions:

Exercise a gainful activity in Switzerland: employee, self-employed or secondary activity generating income subject to AHV/OASI
Be subject to Swiss AHV/OASI: AHV contributions are the prerequisite for pillar 3a eligibility
Age: from 18 years (from the start of gainful activity). You can contribute up to 5 years after the legal retirement age if you continue working (i.e. up to age 70).
Residence or work in Switzerland: Swiss residents and cross-border workers employed in Switzerland are eligible

For a pillar 3b, there is no activity condition. Any person residing in Switzerland can open one.

Step 1: define your needs

Before opening a 3rd pillar, take time to reflect on your objectives:

How much to contribute? Ideally, aim for the limit of CHF 7 258.- per year. If that is too much, start with an amount that suits you (even CHF 100.-/month is a good start).
Bank or insurance? Do you prioritise flexibility and returns (bank) or protection and discipline (insurance)? See our guide bank or insurance.
What investment strategy? Secure savings account or investment funds for better returns? This depends on your horizon and risk tolerance.
How many accounts? Plan to open 3 to 5 accounts in total to optimise taxation at withdrawal.

Step 2: compare offers

Conditions vary enormously from one provider to another. Here are the essential comparison criteria:

For a bank 3a

Management fees (TER): for funds, aim for a TER below 0.50%. Passive ETFs offer the lowest fees (0.10-0.30%).
Interest rate: for the savings account, compare the rates offered.
Fund range: check the diversity and quality of available funds (equities, bonds, sustainable, ETFs).
Account maintenance fees: some banks waive them, others charge CHF 10.- to 30.- per year.
App and interface: a good digital experience facilitates tracking your savings.
Minimum contribution: some providers require no minimum.

For a 3a insurance

Guaranteed capital at maturity: what amount is guaranteed at the end of the contract?
Annual surrender value: how much do you recover if you cancel after 1, 5, 10, 15 years?
Death coverage: what capital is paid to your loved ones in case of death?
Premium waiver: from what degree of disability? What conditions?
Annual premium: the fixed premium amount and associated fees.

Use our online comparator for an overview of the best offers, or request a personalised quote.

Step 3: gather the documents

The documents needed to open a 3rd pillar are:

Identity document: valid ID card or passport
Proof of address: recent utility bill (electricity, phone), municipal residence certificate, or lease
BVG affiliation certificate: provided by your employer or pension fund, to determine whether you fall under the employee or self-employed limit. Not always required.
For cross-border workers: G work permit (cross-border permit)
For self-employed persons: certificate from the AHV compensation fund confirming your self-employed status
AHV number: your Swiss social security number (13 digits)
Bank details: IBAN of your current account for contributions

Step 4: open the account

Online opening

The majority of banks and new pension platforms offer entirely online opening:

Go to the provider's website or app
Complete the registration form (personal data, professional situation)
Complete identity verification (video, ID photo, or PostIdent)
Choose your investment strategy (savings account, mixed fund, equity fund, etc.)
Sign the contract electronically
Make your first contribution

Duration: online opening generally takes 10 to 20 minutes. The account is active within 1 to 5 business days.

In-branch opening

If you prefer human contact, you can open your 3a directly at a bank branch or with an insurance broker:

Make an appointment with an advisor
Bring your documents (ID, proof of address)
Discuss your objectives and risk profile
Sign the opening documents
The account is generally active within the following days

Step 5: make your first contribution

Once the account is open, make your first contribution:

By bank transfer: transfer the desired amount from your current account to your 3a account
By standing order: set up an automatic monthly transfer to ensure savings discipline (e.g. CHF 605.- per month to reach the limit)
By lump-sum payment: contribute the maximum amount at the beginning of the year to maximise investment duration

Reminder: the annual limit is CHF 7 258.- for employees with BVG and CHF 36 288.- for self-employed persons without BVG. See our page on the maximum amount.

Step 6: declare your contributions for tax purposes

To benefit from the tax deduction, you must declare your 3a contributions in your tax return:

At the beginning of the following year, your provider will send you a contribution certificate
Enter the amount in the "Pillar 3a" section of your tax return
Keep the certificate in case of audit
The tax saving will be visible on your next tax assessment

The best time to start

The answer is simple: now. Every year without a 3a contribution is a lost tax saving and missed compound interest gains. Here is the impact of when you start:

Starting age	Saving duration	Total contributed	Capital at 65 (4% return)
25 years	40 years	CHF 290'320.-	~CHF 715'000.-
30 years	35 years	CHF 254'030.-	~CHF 540'000.-
35 years	30 years	CHF 217'740.-	~CHF 407'000.-
40 years	25 years	CHF 181'450.-	~CHF 303'000.-
45 years	20 years	CHF 145'160.-	~CHF 222'000.-

Annual contributions of CHF 7 258.- with an average annual return of 4%. Total gain includes compound interest.

Starting at 25 rather than 35 allows you to nearly double the final capital, even though the total contributed differs by only CHF 72,580.-. That is the power of compound interest.

Consider the retroactive buy-back

If you did not contribute the maximum in previous years, the new retroactive buy-back law (in force since January 2026) allows you to fill these gaps. You can buy back up to CHF 7 258.- per gap year, in addition to your regular contribution.

Starting strategy: multiple accounts

From the opening of your first 3rd pillar, keep in mind the multiple accounts strategy. The idea is to gradually open 3 to 5 3a accounts over your career to stagger withdrawals at retirement and minimise withdrawal tax.

You do not need to open all accounts at once. Start with one, then open a new one every 5 to 8 years.

Do not wait any longer: open your 3rd pillar

You have all the information you need to get started. Request a free personalised quote to receive a recommendation tailored to your profile and compare the best solutions on the market. It is free, fast and without obligation.

How to open a 3rd pillar in Switzerland