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IBAN by country

San Marino IBAN

27 characters: the country code, two check digits, then the BBAN cut as below.

Anatomy of the official example

SM86U0322509800000000270100

  • Country code
  • Check digits
  • National check or other
  • Bank code
  • Branch code
  • Account number

The example comes from the ISO 13616 registry; it belongs to nobody. Positions count from the first character of the IBAN.

Some of this country's bank codes are additionally named by a supervisor's list, which we serve one page each — but that list does not publish the allocation of the code space, so a code missing from it is not a code that was never issued.

The facts about the San Marino IBAN
ISO codeSM
Length27 characters
Check digitspositions 3 to 4, ISO 7064 mod 97-10
Bank codepositions 6 to 10 · 5!n
Branch codepositions 11 to 15 · 5!n
Account numberpositions 16 to 27 · 12!c
Official exampleSM86 U032 2509 8000 0000 0270 100
SEPA areamember · SCT, SDD, SCT Inst
Verification of Payeeno duty to date
Bank-code registerCentral Bank of the Republic of San Marino, Operating Banks (banks only; the list does not publish the allocation of the ABI code space, so an absence is not a non-allocation)

SWIFT notation: n = digits, a = upper-case letters, c = alphanumeric characters; the exclamation mark fixes the exact length.

What the API checks on a San Marino IBAN

  • The length, the charset of every field and the mod-97 check digits.
  • The bank code against Central Bank of the Republic of San Marino, Operating Banks (banks only; the list does not publish the allocation of the ABI code space, so an absence is not a non-allocation): the holder of every code it lists, without the weight of a register that settles a negative; the other codes against our composite map.
  • The country's SEPA reachability and the open schemes (SCT, SDD, SCT Inst).
  • The Verification of Payee duty that does, or does not, bind the country's providers.

What the API answers for this code

The API checks this country's bank codes against Central Bank of the Republic of San Marino, Operating Banks (banks only; the list does not publish the allocation of the ABI code space, so an absence is not a non-allocation). We serve that register from a private file rather than publish it, so its answer to this example is not copied here: it is computed live, on the request. Try the example in the playground

Test a San Marino IBAN for freeAudit a whole creditor fileThe POST /v1/iban/validate routeThe country's bank codes, one per pageAll countries

Source: ISO 13616 registry for the length, layout and example; API answer captured on 2026-10-21.