San Marino IBAN Validator SM
Validate a San Marino IBAN and view its structure: checksum, bank code and format. 100% in your browser - no upload.
What is a San Marino IBAN?
A San Marino IBAN is the standardized 27-character account number used for San Marino bank transfers, starting with the country code SM and 2 check digits followed by the national bank code and account number. It is validated with the ISO 13616 mod-97 checksum — paste one above to check it instantly, in your browser.
Enter an IBAN
Spaces are automatically ignored. No data is sent - 100% local calculation.
San Marino IBAN format
- Country code
- SM
- Length
- 27 characters
- Structure
- SM + 2 check digits + 23-character BBAN
- Example
- SM86 U032 2509 8000 0000 0270 100
San Marino IBAN structure explained
How a San Marino IBAN is built, segment by segment, from our validated example:
Major San Marino banks and their codes
The national bank codes of the largest San Marino banks, embedded in every IBAN they issue:
| Bank | ABI + CAB code | BIC / SWIFT |
|---|---|---|
| Banca Agricola Commerciale (BAC) | 03034 | BASMSMSM |
| Banca Sammarinese di Investimento | 03287 | BSDISMSD |
| Cassa di Risparmio della Repubblica di San Marino | 06067 | CSSMSMSM |
| Banca di San Marino | 08540 | MAOISMSM |
Bank codes and BIC/SWIFT identifiers are provided for reference. Always confirm the full IBAN with your bank.
See all San Marino banks and their codesAbout San Marino IBANs
A San Marino IBAN starts with the country code SM, followed by 2 check digits and the national account number (BBAN), for a total of 27 characters. ValidateFin verifies the mod-97 checksum (ISO 13616), the length and the format - entirely in your browser, no data sent to any server.
- •San Marino shares the Italian structure, starting with a one-letter CIN national checksum right after the check digits.
- •The bank is identified by a 5-digit ABI code and the branch by a 5-digit CAB code, exactly as in Italy.
- •San Marino uses the euro and is part of the SEPA zone, so a SM IBAN works for all standard euro payments.
San Marino IBAN — frequently asked questions
How many characters does a San Marino IBAN have?
A San Marino IBAN is exactly 27 characters long: the country code SM, 2 check digits and a 23-character BBAN (national account number). Any San Marino IBAN that is shorter or longer than 27 characters is invalid.
How do I check whether a San Marino IBAN is valid?
Paste the IBAN into the validator above. ValidateFin verifies that it starts with SM, has 27 characters and passes the mod-97 checksum defined by ISO 13616. The check runs entirely in your browser — nothing is uploaded to any server.
Where can I find my San Marino IBAN?
Your San Marino IBAN appears on your bank statements, in your online or mobile banking under account details, and on your bank card documentation. It always begins with the SM country code followed by the 2 check digits.
What is the structure of a San Marino IBAN?
A San Marino IBAN (SM) is made of the SM country code, 2 check digits, the national bank code and the account number — 27 characters in total. The validator above breaks any San Marino IBAN down into these parts.
How do I find the bank from a San Marino IBAN?
The bank code is embedded right after the check digits in every San Marino IBAN. Match it against the bank code table above, or paste the IBAN into the validator to identify the issuing institution.