Slovakia IBAN
24 characters: the country code, two check digits, then the BBAN cut as below.
Anatomy of the official example
SK3112000000198742637541
- Country code
- Check digits
- 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.
The bank code of this official example is not allocated in Národná banka Slovenska, prevodník of identification codes for the domestic payment system: the API says so as it is, which is the expected behaviour on a demonstration IBAN.
| ISO code | SK |
|---|---|
| Length | 24 characters |
| Check digits | positions 3 to 4, ISO 7064 mod 97-10 |
| Bank code | positions 5 to 8 · 4!n |
| Branch code | positions 9 to 14 · 6!n |
| Account number | positions 15 to 24 · 10!n |
| Official example | SK31 1200 0000 1987 4263 7541 |
| SEPA area | member · SCT, SDD, SCT Inst |
| Verification of Payee | mandatory for the country's providers |
| Bank-code register | Národná banka Slovenska, prevodník of identification codes for the domestic payment system |
SWIFT notation: n = digits, a = upper-case letters, c = alphanumeric characters; the exclamation mark fixes the exact length.
What the API checks on a Slovakia IBAN
- The length, the charset of every field and the mod-97 check digits.
- The bank code against Národná banka Slovenska, prevodník of identification codes for the domestic payment system, refreshed monthly: institution, matching BIC, status.
- 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 block below is the route's own answer, produced by the same code that serves api.ibanforge.com, on the register as of the date shown. Nothing is edited.
{
"valid": true,
"country": {
"code": "SK",
"name": "Slovakia"
},
"bic": null,
"bank_code_check": {
"value": "1200",
"status": "not_in_register",
"reason": "not_allocated",
"match": null,
"register": "Národná banka Slovenska, prevodník of identification codes for the domestic payment system",
"authoritative": true,
"as_of": "2026-05"
},
"sepa": {
"member": true,
"schemes": [
"SCT",
"SDD",
"SCT_INST"
],
"vop_required": true,
"vop_participant": null,
"basis": "country_default"
},
"issuer": null,
"risk_indicators": {
"country_risk": "standard",
"sepa_reachable": true,
"vop_coverage": true,
"test_bic": false
}
}Source: ISO 13616 registry for the length, layout and example; API answer captured on 2026-09-23.