Start by identifying the pledge
Pledged pillar 3a assets can secure a home loan without necessarily being paid to the lender. An early withdrawal, by contrast, takes money out of pension provision. That distinction matters when the mortgage is renewed. A new rate or lender does not tell you what happens to existing security. Retrieve the pledge and 3a agreements to identify the asset, lender, release conditions and scope of the pledge.
An example with three parties
Assume a CHF 460,000 mortgage and a CHF 58,000 3a account pledged to the current lender. Another bank offers to refinance. Before signing, the owner asks whether the new lender accepts a pledge on the same account, requires different security or changes the loan terms. The owner also asks the old lender and foundation what instructions allow a release or replacement. The mortgage reaching maturity does not turn the account into CHF 58,000 of freely accessible money.
Compare with an actual repayment
If an offer uses 3a money to repay the loan, separate an actual payment from a change in security. Geneva says that a transfer of pension assets to the bank for mortgage repayment is a taxable lump-sum benefit. The proposal should therefore distinguish refinancing costs, any capital benefit tax and changes to retirement savings. If the 3a is an insurance policy, check its risk cover and transfer value instead of comparing mortgage rates alone.
Confirm the sequence in writing
Ask who must agree, which documents are needed and when instructions must arrive. Confirm whether the savings remain invested during the change and whether indirect amortisation needs to be revised. Do not request a payout to a current account to simplify a transfer. Keep the release or new pledge confirmation with the agreements and reconcile balances and references afterward.
If the banks' timelines differ
The time allowed to refinance may be shorter than the time needed to transfer pension assets. Ask whether the financing can be confirmed subject to a condition and what happens if paperwork arrives after the deadline. Before agreeing, compare the consequences of an extension with switching lenders and providing alternative security. Do not assume a verbal agreement determines what happens to the pledge. A written timeline should identify who handles each step and when you can check that it is complete.