Swiss IBAN Format (CH): Structure, Clearing Number, and SEPA Status Explained

The Swiss IBAN is 21 characters long and encodes a 5-digit clearing number (Clearingnummer) that identifies the bank within Switzerland's domestic interbank clearing system. Switzerland is not a member of the European Union and not a SEPA country — Swiss IBANs are used internationally via SWIFT, not SEPA. This distinction is critical for payment routing and fee calculation when sending money to or from Switzerland.

Swiss IBAN at a Glance

• Country code: CH
• Total length: 21 characters (always)
• Format: CHkk bbbbb cccccccccccc
• BBAN length: 17 digits
• Character types: digits only after the country code

Swiss IBAN Structure Explained

1. Country Code — CH (2 characters)

The ISO 3166-1 alpha-2 code for Switzerland. Every Swiss IBAN begins with CH. Note that Liechtenstein uses LI — not CH — even though it shares many banking ties with Switzerland.

2. Check Digits — kk (2 digits)

Two decimal digits computed with the MOD-97 algorithm over the full BBAN. Standard across all IBANs.

3. Clearing Number — bbbbb (5 digits)

The Swiss Clearingnummer is a 5-digit bank identifier assigned by SIX Interbank Clearing — the Swiss payment infrastructure operator. It uniquely identifies the bank within Switzerland's clearing network. Examples:

• 00762 — UBS AG
• 00830 — Credit Suisse (now integrated into UBS)
• 08390 — PostFinance
• 04835 — Raiffeisen Switzerland

4. Account Number — cccccccccccc (12 digits)

The 12-digit account number. Swiss account numbers are typically zero-padded on the left to reach exactly 12 digits. The account number format varies by bank — PostFinance uses a different internal account structure than UBS, for example, but both are zero-padded to 12 digits in the IBAN.

Swiss IBAN Example Explained

CH93 0076 2011 6238 5295 7

• Country: CH
• Check digits: 93
• Clearing number: 00762 (UBS AG)
• Account number: 011623852957

Second Example — PostFinance

CH56 0483 5012 3456 7800 9

• Country: CH
• Check digits: 56
• Clearing number: 04835 (Raiffeisen)
• Account number: 012345678009

How Swiss IBAN Validation Works

1. Country code check: First two characters must be exactly CH.
2. Length check: Total character count (spaces removed) must be exactly 21. Swiss IBANs are shorter than French or Italian IBANs (both 27) and slightly shorter than German IBANs (22).
3. Character type check: Positions 3–21 must all be decimal digits. No letters appear after the country code in a Swiss IBAN.
4. MOD-97 check: Standard modulo 97 computation. Result must equal 1.

The ibanchecker.cash validator validates Swiss IBANs instantly and displays the clearing number and associated bank name.

Switzerland Is Not a SEPA Country

This is the most important fact about Swiss IBANs that trips up European finance teams. Switzerland is not a SEPA member. Sending a SEPA Credit Transfer to a Swiss IBAN (CH) will be routed as an international SWIFT wire, not a domestic SEPA transfer. This means:

• Longer processing times (1–3 business days vs. same-day SEPA)
• Higher fees, including correspondent bank fees
• Requirement to provide the bank's BIC/SWIFT code alongside the IBAN
• Potential currency conversion if paying in EUR to a CHF account

Some large EU banks have bilateral agreements with Swiss banks that allow faster Swiss-targeted payments, but these are bank-specific, not SEPA-standard.

Common Swiss IBAN Mistakes

Assuming SEPA Coverage

Finance teams in Germany, France, or the Netherlands sometimes process Swiss supplier invoices as SEPA transfers and are surprised when they fail or incur extra fees. Always check whether the recipient's country is in the SEPA zone before initiating a payment.

Using Liechtenstein's IBAN (LI) by Mistake

Liechtenstein's banks often use Swiss clearing infrastructure, but Liechtenstein IBANs start with LI, are 21 characters long, and use the same 5-digit clearing number format as Switzerland. A Liechtenstein IBAN will not validate as a Swiss IBAN.

Spaces in Electronic Transmission

Remove spaces for electronic use: CH9300762011623852957.

Swiss IBAN and International Payments

For payments to Switzerland from outside the country, you typically need both the 21-character IBAN and the bank's 8- or 11-character BIC/SWIFT code. Look up any Swiss bank's BIC using the ibanchecker.cash SWIFT directory.

Validating Swiss IBANs in Bulk

Finance teams processing Swiss vendor payments can validate multiple IBANs at once using the ibanchecker.cash bulk checker. Upload a CSV with up to 100 IBANs and receive per-row validation results with bank name and clearing number.

Last updated: June 2026