Tipp: Please note that in the event of a modification (death, tenant moves in or out) the old ۶Ƶ Rental Surety Savings Account will be closed and opened for a new banking relationship.
Modifying an existing rental surety savings account
Before getting started
Before getting started
Before filling out the form, be sure you meet the following requirements:

- All signatures must always be originals
- To ensure correct processing, we need the following information: account number / IBAN, name of bank, name of account holder
- The form needs to stay in its original state, without deletions or corrections
How to modify a rental surety account
How to modify a rental surety account
Increasing the deposit amount
To increase the deposit, you only need to submit the form “Surety for lease”. Please add the new deposit amount including the increase.
Security for rental agreementSecurity for rental agreement PDF
Reducing the deposit amount
For a reduction, it is sufficient to submit the form “Security for the rental agreement”. Please complete the relevant section.
Security for rental agreementSecurity for rental agreement PDF
Change of administration / ownership
To change the management or the owner, you can use the form «Surety for lease.
Security for rental agreementSecurity for rental agreement PDF
Change of name or legal form
In the event of a change of name or legal form, official proof of the change of name or legal form is sufficient. Please send the documents with the details of the rental deposit account to the address below.
Natural person: If the deposit amount is less than CHF 10,000, a written order is sufficient. We also require proof of the change of name including the tenant's new signature (extract from family register or copy of ID).
Legal entity: Extract from the commercial register or an equivalent document
۶Ƶ Switzerland AG
DMMKK
P.O. Box
8098 Zurich
Moving in or moving out of a tentant
- Please open a new ۶Ƶ Rental Surety Savings Account via “Open a rental surety savings accountOpen a rental surety savings account page link” with your new details.
- Please wait for the opening confirmation, which we will send you within 5 working days.
- Then submit the “Instructions for repayment of rental surety” (closing your old account). Please do not forget to note the account number of the new rental surety savings account on it.
Request for repayment of the rental suretyRequest for repayment of the rental surety PDF
Erroneous payment
In the case of an erroneous payment into an existing rental surety savings account, the amount can be refunded by means of a written order. The order must be signed by the tenant and landlord/management and can only be refunded to the sender of the payment. The refund will only be made to the sender of the payment. Please send the documents to the address below:
۶Ƶ Switzerland AG
DMMKK
P.O. Box
8098 Zurich
Procedure in the event of a tenant’s death (and/or connection)
In the case of a joint account, the rental deposit account can be continued under the previous account number in the name(s) of the remaining account holder(s). A death certificate or an equivalent document (medical certificate of death, official death notice) must be submitted.
In the case of an individual or collective account (and link), the rental deposit account must be balanced.
To fill out our documents, please use , which is available free of charge.
Other important help topics
Other important help topics
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