Pillar 3a in divorce: division, separate property and matrimonial property law

1. Is Pillar 3a divided in a divorce?

In a divorce, Pillar 3a is only partly divided: the part built up during the marriage is affected. What you saved before the marriage counts as separate property. For Pillar 3a, matrimonial property law is decisive, not the pension law that applies to the pension fund.

How Pillar 3a is divided is determined by the marital property regime:

• Participation in acquired property (the statutory default without a marriage contract): the 3a balance built up during the marriage counts as acquired property and is divided.
• Community of property: insofar as Pillar 3a belongs to the joint property, it is divided in half as a rule.
• Separation of property: no matrimonial property division takes place; each person keeps their own Pillar 3a.

A 3a account in your name alone is also taken into account if the balance arose during the marriage.

Important is the delineation from the pension fund: Pillar 3a remains restricted provision even after the divorce. It is not about a free payout, but about who the balance belongs to under matrimonial property law.

2. Which cut-off date applies to dividing Pillar 3a?

What counts for the division is not when the divorce becomes legally binding or when you physically separate, but when the divorce proceedings are initiated. Decisive is the day on which the joint petition or the claim is filed with the court (CC Art. 204). What you pay into Pillar 3a after that no longer counts towards the divisible acquired property.

3. What counts as separate property and what as acquired property in Pillar 3a?

Not every franc in the 3a account belongs to both in a divorce. What was saved before the marriage remains separate property and thus yours; only the acquired property built up during the marriage is divided. In longer marriages, this delineation quickly becomes complex.

Separate property, according to CC Art. 198, covers the assets present before the marriage as well as inheritances and gifts you receive during the marriage. One often overlooked rule matters here: the returns on separate property, such as interest or increases in value, fall under CC Art. 197 into the acquired property as a rule and thus become divisible.

It becomes disputed above all in three constellations:

• Mixed funds: if an account was built up partly before and partly during the marriage, the share must be split by calculation.
• Proof: inheritances or pre-marital balances only count as separate property if you can prove the origin. Without records, the balance is attributed to the acquired property.
• Marriage contract: an agreed separation of property can provide its own rules.

Under participation in acquired property, each person is ultimately entitled to half of the other's surplus. What is actually paid out is therefore not the half 3a account, but the difference between the two claims.

Example calculation: A 41-year-old physiotherapist from Biel had CHF 22'000 in Pillar 3a at the marriage and CHF 85'000 at the initiation of proceedings. The CHF 63'000 built up during the marriage count as acquired property. From this results a half claim of around CHF 31'500, provided no return on separate property has to be delineated. The actual equalisation runs through the entire matrimonial property settlement and can differ from this.

4. Is Pillar 3a divided like the pension fund?

No. The pension fund and Pillar 3a follow different rules. With the pension fund, the entitlements acquired during the marriage are divided in half as a rule through pension equalisation; the court can deviate from this in exceptional cases (CC Art. 124b). The divided capital remains in the pension system and is transferred to a vested benefits account of the other person.

For Pillar 3a, by contrast, matrimonial property law determines whether and how it is divided. Under participation in acquired property, the 3a balance built up during the marriage counts as acquired property and is equalised in half.

Whether the 3a balance was built up through a bank account or an insurance policy plays no role for the division. Differences between bank or insurance concern contract structure and valuation; for a policy, what usually counts for this is the surrender value plus any surplus.

5. Is Pillar 3a paid out or transferred?

If you are awarded a share of the other person's 3a balance, you do not receive it as cash. It is transferred within the pension system, that is to a 3a or a vested benefits account in your name. A free payout is only possible if a statutory withdrawal reason exists anyway.

For the provider to transfer, it needs a clear basis: the division must be expressly quantified in the legally binding divorce decree or in the court-approved agreement. If this figure is missing, the account remains unchanged.

6. What should I consider for Pillar 3a after the divorce?

After a divorce, several things need to be arranged for Pillar 3a. Most important is early documentation: 3a accounts and 3a policies belong in the asset inventory, but are often forgotten in divorce proceedings. For the division, you should have these documents ready:

• Current 3a statement as the starting value and statement at the marriage date to delineate separate property
• Contribution confirmations as proof of the marriage period
• Contract documents for a 3a policy for the valuation
• Evidence of inheritances or gifts as well as any marriage contract with special rules on separation of property

Besides the documents, you should tackle two points:

Adjust contributions: After a divorce, the available income often falls. Adjust the 3a contribution to the lower income and check an existing 3a policy for costs and flexibility. Those who earned little or worked part-time during the marriage additionally carry a larger pension gap; for those affected, provision for part-time work is especially important after the separation.

Update the beneficiary designation: With the legally binding divorce, your ex-partner automatically loses the statutory position as beneficiary spouse. Nonetheless review your beneficiary declaration, above all if you had expressly named the person. If you newly live in cohabitation, you must actively designate the partner as beneficiary, otherwise there is no claim. The same beneficiary designation determines who receives the balance in the event of death.

With the divorce, a new financial chapter often begins, for provision too. With Pillar 3a, it is not the individual account that decides which part is divided, but the marital property regime and the cut-off date. If you review your own provision after the separation and adjust it to the new situation, you close new gaps in time.

This article was first published on 13/05/2026