What is the Slovenia IBAN format?

Slovenia IBANs start with SI, followed by 2 check digits, then a 15-character BBAN encoding the bank code, branch code, and account number.

Slovenia is a SEPA member. Transfers from other SEPA countries are fast and low-cost.

SI SEPA Member

Slovenia IBAN Format

Q: How long is a Slovenia IBAN?

A Slovenia IBAN is 19 characters long.

19-character IBAN · EUR Euro · SEPA zone

A Slovenia IBAN is 19 characters long and always begins with the country code SI, followed by two check digits. The next 2 characters are the Bank Code. This is followed by the Branch Code (3 characters). The remaining 8 characters identify the individual account number. The Slovenia IBAN uses the EUR (Euro) and is a <strong>SEPA member</strong>, meaning euro transfers from other SEPA countries are fast and low-cost.

Length

characters

Country Code

ISO 3166-1

Currency

EUR

Euro

SEPA

Yes

SEPA member

Example IBAN

SI56 2633 0001 2039 086

SI Country

56 Check Digits

26 Bank Code

330 Branch Code

00120390 Account Number

86 National Check Digits

IBAN Structure

Position	Length	Field	Type	Example Value
1–2	2	Country Code	a	SI
3–4	2	Check Digits	n	56
5–6	2	Bank Code	n	26
7–9	3	Branch Code	n	330
10–17	8	Account Number	n	00120390
18–19	2	National Check Digits	n	86

n = numeric only (0–9) a = alphabetic only (A–Z) c = alphanumeric (0–9, A–Z)

Validate a Slovenia IBAN

Paste a Slovenia IBAN below to check it.

Slovenia IBAN Regex Pattern

^SI\d{2}\d{2}\d{3}\d{8}\d{2}$

Pattern validates length, country code, check digit positions, and field character types. Does not verify the MOD-97 checksum (use the validator above for full validation).

PHP

$iban = strtoupper(str_replace(' ', '', $input));
if (!preg_match('/^SI\\d{2}\\d{2}\\d{3}\\d{8}\\d{2}$/', $iban)) {
    // Invalid Slovenia IBAN format
}

JavaScript

const iban = input.replace(/\s+/g, '').toUpperCase();
const pattern = /^SI\d{2}\d{2}\d{3}\d{8}\d{2}$/;
if (!pattern.test(iban)) {
  // Invalid Slovenia IBAN format
}

Python

import re
iban = input_str.replace(' ', '').upper()
pattern = r'^SI\d{2}\d{2}\d{3}\d{8}\d{2}$'
if not re.fullmatch(pattern, iban):
    # Invalid Slovenia IBAN format

These snippets check format only. For full IBAN validation including MOD-97 checksum, use a dedicated IBAN library or the validator on this page.

How to Find Your Slovenia IBAN

Slovenia accounts are traditionally identified using: Bank Code (5n) + Account Number (8n) + Check Digits (2n). Your IBAN encodes these same components in the standardised international format.

1
Mobile banking app — Open your bank's app, navigate to account details or "Account Info." Your IBAN is usually displayed alongside your account number. Look for a field labelled "IBAN" or "International Account Number."
2
Bank statement — Your Slovenia IBAN appears in the account header of your printed or PDF bank statement, typically near the top of the first page.
3
Online banking — Log in to your bank's website and go to "Account Details," "Account Summary," or "Profile." Most Slovenia banks display the IBAN prominently in account settings.
4
Bank branch or helpline — Call your bank's customer service or visit a branch with your ID. They can provide your full IBAN instantly.

Once you have your IBAN, use the validator above to confirm it is correctly formatted before sharing it.

Sending Money to Slovenia

Slovenia is a SEPA member. From any other SEPA country, you only need the recipient's IBAN — no BIC/SWIFT required. Transfers settle within 1 business day (or instantly via SEPA Instant Credit Transfer). Fees cannot exceed what your bank charges for a domestic payment.

What to provide

Recipient's full name
IBAN (19 characters, starts with SI)

Typical transfer time

0–1 day

SEPA Credit Transfer (1 day) or SEPA Instant (<10 seconds if both banks support it)

Slovenia is a SEPA member using the Euro. IBAN alone is sufficient for SEPA transfers. Slovenia adopted the Euro in 2007. Slovenian IBANs are short at 19 characters.

Compare transfer services for Slovenia

Specialist services typically charge significantly less than high-street banks for international transfers.

Wise — Low fees, real exchange rate ↗ Revolut — Fast transfers ↗

Central Bank

Banka Slovenije

https://www.bsi.si ↗

← Slovakia Somalia →

Quick Facts

IBAN Length: 19 chars
Country Code: SI
Currency: EUR
SEPA: Yes
BBAN Format: 15n
IBAN Required: mandatory
Adopted: 2001