What is the Belarus IBAN format?

Belarus IBANs start with BY, followed by 2 check digits, then a 24-character BBAN encoding the bank code, branch code, and account number.

Belarus is not a SEPA member. International transfer fees and timelines apply.

Belarus IBAN Format

Q: How long is a Belarus IBAN?

A Belarus IBAN is 28 characters long.

28-character IBAN · BYR Belarusian Ruble

A Belarus IBAN is 28 characters long and always begins with the country code BY, followed by two check digits. The next 4 characters are the Bank Code. The remaining 16 characters identify the individual account number. The Belarus IBAN uses the BYR (Belarusian Ruble) and is not part of the SEPA zone, so international transfer fees and timelines apply.

Length

characters

Country Code

ISO 3166-1

Currency

BYR

Belarusian Ruble

SEPA

Non-SEPA

Example IBAN

BY13 NBRB 3600 9000 0000 2Z00 AB00

BY Country

13 Check Digits

NBRB Bank Code

3600 Balance Account

900000002Z00AB00 Account Number

IBAN Structure

Position	Length	Field	Type	Example Value
1–2	2	Country Code	a	BY
3–4	2	Check Digits	n	13
5–8	4	Bank Code	c	NBRB
9–12	4	Balance Account	n	3600
13–28	16	Account Number	c	900000002Z00AB00

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

Validate a Belarus IBAN

Paste a Belarus IBAN below to check it.

Belarus IBAN Regex Pattern

^BY\d{2}[A-Z0-9]{4}\d{4}[A-Z0-9]{16}$

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(' ', '', $input));
if (!preg_match('/^BY\\d{2}[A-Z0-9]{4}\\d{4}[A-Z0-9]{16}$/', $iban)) {
    // Invalid Belarus IBAN format
}

JavaScript

const iban = input.replace(/\s+/g, '').toUpperCase();
const pattern = /^BY\d{2}[A-Z0-9]{4}\d{4}[A-Z0-9]{16}$/;
if (!pattern.test(iban)) {
  // Invalid Belarus IBAN format
}

Python

import re
iban = input_str.replace(' ', '').upper()
pattern = r'^BY\d{2}[A-Z0-9]{4}\d{4}[A-Z0-9]{16}$'
if not re.fullmatch(pattern, iban):
    # Invalid Belarus 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 Belarus IBAN

Belarus accounts are traditionally identified using: Bank Code (4c) + Balance Account (4n) + Account Number (16c). 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 Belarus 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 Belarus 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 Belarus

Belarus is not a SEPA member. Transfers require both an IBAN and a BIC/SWIFT code. Expect 2–5 business days and a SWIFT correspondent fee (typically $10–$40 USD via a traditional bank). Using a specialist service like Wise or Revolut can significantly reduce these fees.

What to provide

Recipient's full name
IBAN (28 characters, starts with BY)
BIC / SWIFT code
Recipient's bank address (some banks)

Typical transfer time

2–5 days

Via SWIFT network. Specialist services (Wise, Revolut) are often faster and cheaper than traditional bank wires.

Belarus adopted IBAN in 2017. International sanctions may affect transfer availability. Always include BIC. The balance account code indicates the type of account (current, deposit, etc.).

Compare transfer services for Belarus

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

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

Central Bank

National Bank of the Republic of Belarus

https://www.nbrb.by ↗

← Bahrain Belgium →

Quick Facts

IBAN Length: 28 chars
Country Code: BY
Currency: BYR
SEPA: No
BBAN Format: 4c4n16c
IBAN Required: mandatory
Adopted: 2017