A library for generation and validation of International Bank Account Numbers (IBAN, ISO 13616) and Business Identifier Codes (BIC, ISO_9362).

• Drop-in replaceable with iban-js
• Currently conformant with Version 95 (July 2023) of the IBAN registry
• Decodes bank, branch and account numbers from IBAN
• Supports random BBAN / IBAN generation for testing
• Has BIC validation as a bonus
• Supports validation of National Check Digits if part of BBAN format
• Full TypesScript support
• No external dependencies

This release should be compatible with the SWIFT IBAN Registry Version 95. There may be a limited number of value differences, some countries in the Registry doesn't describe bank/branch information but may expose it as 3!n4!n but leave the branch description as a blank.

// How to generate IBAN
const ibanStr = new IBANBuilder()
  .countryCode(CountryCode.AT)
  .bankCode("19043")
  .accountNumber("00234573201")
  .build()
  .toString();

// How to create IBAN object from String
const iban = new IBAN("DE89370400440532013000");

// The library ignores spaces in IBANs, this is valid
const iban = new IBAN("DE89 3704 0044 0532 0130 00");

// For testing, the library will also generate random IBANs
const iban = IBAN.random(CountryCode.AT);
const iban = IBAN.random();
const iban = new IBANBuilder().countryCode(CountryCode.AT).bankCode("19043").build();

// For simplicity in porting from iban-js applications
// you can quickly check validity
IBAN.isValid("AT611904300234573201"); // ===  true
IBAN.isValid("DE89 3704 0044 0532 0130 00"); // == true
IBAN.isValid("hello world"); // == false

// How to create BIC object from String
const bic = BIC("DEUTDEFF");

// Check to see is BIC code is valid
BIC.isValid("DEUTDEFF500"); // === true

• Finish writing all national check digit generators (see Oracle spec)
• For random IBANs the National Check digits is random, rather than "valid"

• http://en.wikipedia.org/wiki/ISO_13616
• http://en.wikipedia.org/wiki/ISO_9362
• https://www.swift.com/resource/iban-registry-pdf
• https://docs.oracle.com/cd/E18727_01/doc.121/e13483/T359831T498954.htm
• https://en.bitcoinwiki.org/wiki/International_Bank_Account_Number
• globalcitizen/php-iban#39

• iban-js by ARHS Group
• iban4j by Artur Mkrtchyan

Copyright 2018-2023 David Koblas

Licensed under the Apache License, Version 2.0: http://www.apache.org/licenses/LICENSE-2.0