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IBAN Structure Switzerland

Last reviewed: · Source: ISO 13616 / SWIFT IBAN Registry

Switzerland's IBAN is 21 characters long and follows the pattern CHkk BBBB BCCC CCCC CCCC C. After the country code CH and two check digits come a 5-digit bank clearing number (BC number) and a 12-character account identifier. The BC number is assigned by SIX Interbank Clearing and uniquely identifies each Swiss bank. Switzerland participates in SEPA, but payment requirements depend on the banks, currency and route. For international payments, routing details, fees and timing depend on the banks, currency and route; check them in advance with your bank.

Structural fields are based on the official SWIFT IBAN Registry. The editorial method and validation boundary are documented on our German editorial page (German).

Overview

CountrySwitzerland (CH)
IBAN length21 characters
FormatCHkk BBBB BCCC CCCC CCCC C

Visual breakdown

Fictitious format example, not payment data:

CH9300762011623852957
Country codeCheck digitsBank codeAccount identifier

Character-by-character explanation

SegmentCharactersLengthExplanation
Country codeCH2CH for Switzerland (ISO 3166-1)
Check digits932Two check digits per MOD-97
Bank code0076255-digit bank clearing number (BC number)
Account identifier0116238529571212-character alphanumeric account identifier

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Frequently asked questions

How do I check the length of an IBAN from Switzerland?
Remove spaces and count 21 characters. The first two characters are CH; the remaining positions follow CHkk BBBB BCCC CCCC CCCC C. A different length is formally invalid for this country format.
What do the check digits in a Switzerland IBAN mean?
The two check digits are calculated from the complete IBAN using ISO 7064 MOD-97. They help detect format and transcription errors. A passing checksum does not confirm that an account exists or identify its account holder.
What should I do when an IBAN is formally invalid?
Check the country code, character count, letters and digits, and the check digits. Compare the entry with your bank records or ask the bank for the correct IBAN. This checker validates structure and checksum; it does not verify account ownership or payment approval.

IBAN structure for other countries

Germany

22 characters · DEkk BBBB BBBB CCCC CCCC CC

Austria

20 characters · ATkk BBBB BCCC CCCC CCCC

Liechtenstein

21 characters · LIkk BBBB BCCC CCCC CCCC C

France

27 characters · FRkk BBBB BGGG GGCC CCCC CCCC CKK

Spain

24 characters · ESkk BBBB GGGG KKCC CCCC CCCC

Italy

27 characters · ITkk XBBB BBGG GGGC CCCC CCCC CCC

Portugal

25 characters · PTkk BBBB SSSS CCCC CCCC CCCK K

Netherlands

18 characters · NLkk BBBB CCCC CCCC CC