SIX Interbank Clearing
Swiss payment-infrastructure organization operating the SIC and euroSIC interbank clearing systems.
Last updated August 31, 2026
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Overview
SIX Interbank Clearing is the SIX Group business and legal entity associated with Switzerland's central interbank payment infrastructure. Based in Zurich, it operates the Swiss Interbank Clearing system, commonly known as SIC, on behalf of the Swiss National Bank. SIC is the principal real-time gross settlement platform for payments in Swiss francs and is used by virtually all Swiss financial institutions, together with selected banks outside Switzerland. The platform enables participating institutions to exchange electronic payments with immediate settlement in central-bank money, supporting both domestic transfers and cross-border payment flows denominated in Swiss francs. The organization traces its operational origins to 1987, when Telekurs commissioned a new online clearing system built around a central computer and online participant access. The system was designed primarily for Swiss-franc payments and became a foundational component of the country's financial-market infrastructure. The platform's significance reflects Switzerland's banking structure: rather than being a conventional consumer-facing payments brand, SIX Interbank Clearing provides the underlying connectivity, messaging, settlement and operational framework on which banks and other regulated financial institutions depend. Its responsibilities expanded with the development of euroSIC, the euro-denominated counterpart to SIC. euroSIC gives Swiss and Liechtenstein banks access to euro payment processing and European payment systems. The euro clearing arrangement is supported by Swiss Euro Clearing Bank, a special-purpose bank based in Frankfurt that provides access to the Eurosystem's TARGET Services. Together, SIC and euroSIC allow participating institutions to process Swiss-franc and euro payments through Swiss financial-market infrastructure, including around-the-clock electronic processing for relevant transactions. SIX Interbank Clearing also contributes to the standardization and administration of payment information. Its activities have included participation in national and international payment committees and maintenance of reference material connected with IBAN, SEPA and ISO 4217 currency-code standards. These functions give the organization a role beyond transaction processing: it helps maintain common identifiers and operational conventions that allow banks, payment systems and businesses to exchange payment instructions consistently. The organization became part of the broader SIX structure following the merger of the Telekurs, SWX and SIS groups at the beginning of 2008. The parent group was renamed SIX Group later that year, and Swiss Interbank Clearing AG adopted the SIX Interbank Clearing name in November 2008. Within SIX, the brand sits alongside securities-exchange, post-trade, financial-information and card-payment activities, but its distinctive focus remains interbank clearing and payment infrastructure. SIX Interbank Clearing is not a retail bank, card scheme or consumer wallet. End users generally encounter its infrastructure indirectly when a bank transfer is routed through SIC or when a financial institution processes a euro payment through euroSIC. Its customers and participants are financial institutions, central-bank-related payment participants and other organizations eligible under the relevant system rules. Ownership is ultimately connected to the financial institutions that own SIX Group, while operation of the Swiss-franc system is carried out under the institutional framework established with the Swiss National Bank.
History
SIX Interbank Clearing developed from the payment-technology activities of Telekurs, a Swiss financial-information and transaction-services organization. The immediate predecessor of the present SIC infrastructure was commissioned in 1987. Telekurs introduced an online clearing system built around a central computer, with participating institutions connected electronically. At its initial stage, the system was designed mainly for payments in Swiss francs and became a core part of Switzerland's national payment arrangements. The system was significant because it moved interbank settlement away from slower, fragmented procedures toward continuous electronic processing. Rather than serving consumers directly, SIC connected banks and other eligible financial institutions. Its role was to transmit and settle payment instructions between participants, allowing Swiss-franc transfers to be completed on a real-time gross settlement basis. The platform operated within the framework of Swiss monetary and payment-system institutions and was run on behalf of the Swiss National Bank. The payment business expanded internationally in the 1990s. In 1999, euroSIC started operations as a euro-denominated clearing service. It provided Swiss banks with a route into European payment systems and complemented SIC's Swiss-franc role. The euroSIC model was supported by Swiss Euro Clearing Bank, a specialist institution in Frankfurt. SECB's access to the Eurosystem's payment infrastructure allowed euro transactions processed through euroSIC to reach the relevant European settlement environment. Use of euroSIC was not mandatory, and banks could also use other forms of direct or indirect access to European systems. During the same period, the organizations behind Swiss financial-market infrastructure were consolidated. The Swiss stock exchanges in Geneva, Basel and Zurich had already combined to form the Swiss Exchange, while Telekurs and the securities-settlement organizations developed parallel infrastructure businesses. In 2008, the SWX Group, SIS Group and Telekurs Group merged into Swiss Financial Markets Services AG. The group changed its name to SIX Group in August of that year. Swiss Interbank Clearing AG subsequently adopted the SIX Interbank Clearing name in November 2008, aligning the payment-system brand with the new group identity. After the reorganization, interbank clearing remained a distinct activity within the larger SIX portfolio. SIX also operated securities exchanges, central securities and post-trade services, financial-information businesses and payment-processing activities. The interbank-clearing unit continued to concentrate on institution-to-institution payment infrastructure rather than card acquiring, retail banking or consumer mobile payments. SIX Interbank Clearing's activities also include work connected with payment standards. The organization has participated in committees dealing with national and international payment conventions, including IBAN and SEPA-related matters. It maintains reference material associated with ISO 4217, the international standard for currency codes, including currency-code tables and related historical or discussion information. These standards activities support interoperability by helping banks and payment providers interpret payment instructions and currency identifiers consistently. The resulting business is best understood as critical financial plumbing. SIC supports Swiss-franc settlement for the Swiss banking system, while euroSIC extends the infrastructure to euro payments involving Swiss and Liechtenstein institutions and other eligible participants. The brand is owned within SIX Group, whose shareholders are financial institutions and whose businesses serve capital-market and payment-system users. SIX Interbank Clearing therefore has limited public-facing visibility, but its platforms occupy an important position in the operation of Swiss and cross-border payments.
- 2018
Swiss Euro Clearing Bank becomes wholly owned by SIX Group
[1]The specialist bank supporting euroSIC became fully owned by SIX Group, strengthening the group's control of the euro-clearing arrangement.
- 2008
SIX Group is formed
[1]The SWX, SIS and Telekurs groups merged, bringing the interbank-clearing business into the newly created SIX organization.
- 2008
Swiss Interbank Clearing is renamed
[1]Swiss Interbank Clearing AG adopted the SIX Interbank Clearing name in November, following the rebranding of the parent organization.
- 1999
euroSIC launches
[1]The euro clearing service began operations, giving Swiss banks access to euro payment processing and European payment systems.
- 1987
Swiss Interbank Clearing enters operation
[1]Telekurs commissioned an online central-computer clearing system with electronic access for participating institutions. The service initially focused on Swiss-franc payments.
Products and positioning
Systemically important, institution-facing payment infrastructure focused on secure, real-time clearing and settlement for Swiss-franc and euro transactions.
Swiss-franc real-time gross settlement · 1987
Swiss Interbank Clearing
SIC is Switzerland's principal electronic interbank payment system for Swiss francs. Operated by SIX Interbank Clearing on behalf of the Swiss National Bank, it connects virtually all Swiss financial institutions and selected banks outside Switzerland. Payment instructions are processed between eligible participants with settlement in central-bank money, supporting domestic transfers and international Swiss-franc payments. SIC is infrastructure for banks and payment participants rather than a consumer-facing product.
Euro interbank clearing · 1999
euroSIC
euroSIC is the euro-denominated counterpart to SIC. It enables Swiss and Liechtenstein banks and other eligible participants to process euro payments through Swiss payment infrastructure and connect with European payment systems. Swiss Euro Clearing Bank, based in Frankfurt, provides the specialist banking and Eurosystem access supporting the arrangement. euroSIC is intended for institutional payment flows and is not a retail payment wallet or card product.
Payment standards support
Payment standards and currency reference information
SIX Interbank Clearing participates in committees and industry work related to national and international payment standards, including IBAN and SEPA. It also maintains reference tables and historical information associated with ISO 4217, the international standard for currency codes. These activities support consistent identification and formatting of payment and currency data across financial institutions and payment systems.
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