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IBAN Structure Czech Republic

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

The Czech Republic's IBAN has 24 characters in the format CZkk BBBB SSSS SSCC CCCC CCCC. After CZ and the check digits come a 4-digit bank code (e.g. 0100 for Komerční banka, 0800 for Česká spořitelna, 2700 for UniCredit Bank), a 6-digit account prefix and the 10-digit account number. The Czech Republic is in SEPA as an EU member but is not part of the euro area — the koruna (CZK) remains the currency. For payments to the Czech Republic, the available route and required details depend on the banks, currency and payment conditions; 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

CountryCzech Republic (CZ)
IBAN length24 characters
FormatCZkk BBBB SSSS SSCC CCCC CCCC

Visual breakdown

Fictitious format example, not payment data:

CZ6508000000192000145399
Country codeCheck digitsBank codeAccount prefixAccount number

Character-by-character explanation

SegmentCharactersLengthExplanation
Country codeCZ2CZ for the Czech Republic (ISO 3166-1)
Check digits652Two check digits per MOD-97
Bank code080044-digit bank code (e.g. 0100, 0800)
Account prefix00001966-digit account prefix
Account number20001453991010-digit account number

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Frequently asked questions

How do I check the length of an IBAN from Czech Republic?
Remove spaces and count 24 characters. The first two characters are CZ; the remaining positions follow CZkk BBBB SSSS SSCC CCCC CCCC. A different length is formally invalid for this country format.
What do the check digits in a Czech Republic 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

Switzerland

21 characters · CHkk BBBB BCCC CCCC CCCC C

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