Monaco IBAN calculator and checker

A Monaco IBAN has 27 characters: MC, two check digits, then the bank code (code banque), branch code (code guichet), account number (numéro de compte) and RIB key (clé RIB). Enter the local details to build one, or paste an IBAN to check it, all in your browser.

Calculate or check a Monaco IBAN

Enter the bank code (code banque), branch code (code guichet), account number (numéro de compte) and RIB key (clé RIB). The calculator pads short numbers with zeros, works out any national check digits you leave empty and adds the two IBAN check digits.

Switch to Check to paste an IBAN instead: it tests the length, characters, check digits and national check, and shows the bank, branch and account parts. Nothing you type leaves the page.

MC IBAN format

A Monaco IBAN is 27 characters: MC, two check digits, then the bank code (code banque), branch code (code guichet), account number (numéro de compte) and RIB key (clé RIB).

In the printed format, k marks the check digits, a and b the bank, s the branch, sort code or prefix, c the account number and x a national check character.

IBAN length
27 characters
Check digits
2 digits after MC
Bank code (code banque)
5 digits
Branch code (code guichet)
5 digits
Account number (numéro de compte)
11 characters
RIB key (clé RIB)
2 digits
National check digit
Clé RIB, the last 2 digits
SEPA
Yes, outside the EEA
Printed format
MCkk bbbb bsss sscc cccc cccc cxx
Example IBAN
MC58 1122 2000 0101 2345 6789 030

Frequently asked questions

  • 27 characters: MC, two check digits, then the bank code (code banque), branch code (code guichet), account number (numéro de compte) and RIB key (clé RIB). Printed in groups of four, it looks like MC58 1122 2000 0101 2345 6789 030.

  • Monaco uses the French account layout: a five-digit bank code, a five-digit branch code, an 11-character account number and a two-digit RIB key. Its IBAN is 27 characters like France’s, and only the prefix differs: MC instead of FR.

  • Yes. Monaco is in SEPA’s geographical scope although it is not in the EU or the EEA; it joined by EPC decisions taken between 2006 and 2013. Euro payments to a Monaco IBAN can go by SEPA credit transfer when the receiving bank takes part in the SEPA schemes.

  • With the ISO 7064 mod 97-10 algorithm. The bank code (code banque), branch code (code guichet), account number (numéro de compte) and RIB key (clé RIB) and the country code MC are turned into digits, and the two check digits are chosen so the whole number leaves a remainder of 1 when divided by 97. The calculator does this for you and rejects any input that cannot make a valid MC IBAN.

  • Yes. The calculator and the checker run entirely in your browser: the details you enter are never sent to a server, stored or shared. There is no sign-up and no fee.

  • Yes. The calculator covers 41 countries and the checker all 89 in the SWIFT IBAN registry. Pick a different country in the form above, or open its page from the list below.

Paying an IBAN from stablecoins? Holyheld Business converts USDC to EUR and pays it out by SEPA. See pricing or the guide to off-ramping USDC to an IBAN.

Calculate an IBAN by country

More IBAN tools