Understanding IBAN Checksums
Learn how IBAN checksum digits are calculated, why the modulo 97 step matters, and how to validate them reliably in your payment workflows.
IBAN insights and product updates
Explore best practices for working with international bank account numbers, learn how checksum validation works in different countries, and stay informed about new features landing in the RandomIBAN toolkit. Each article is written by our payment specialists and includes practical examples you can adapt to your own QA environments.
Country-by-Country IBAN Format Reference
A practical overview of IBAN lengths, BBAN structures, and national banking nuances across major markets, complete with localisation tips.
IBAN Testing Checklist for Product Teams
A step-by-step testing plan to keep IBAN capture, storage, and payment execution error-free, from interface validation to reconciliation.
What is an IBAN? Complete Guide to International Bank Account Numbers
Discover everything you need to know about International Bank Account Numbers (IBANs), including their structure, purpose, and how they simplify cross-border payments worldwide.
IBAN Format by Country: Complete List of IBAN Lengths and Examples
Comprehensive reference guide to IBAN formats, lengths, and structures for all countries. Includes practical examples and detailed breakdowns of BBAN patterns for developers and payment professionals.
How to Validate an IBAN Number: Step-by-Step Guide
Learn how to validate IBAN numbers using the MOD-97 algorithm. Complete guide with practical examples, code snippets, and best practices for implementing IBAN validation in your payment systems.
IBAN vs SWIFT Code: What is the Difference?
Understand the key differences between IBAN and SWIFT/BIC codes, when to use each one, and how they work together to enable secure international bank transfers.
How to Find Your IBAN Number: Bank by Bank Guide
Complete guide on how to find your IBAN number across different banks and countries. Includes step-by-step instructions for online banking, bank statements, mobile apps, and customer service methods.
SEPA Payments Explained: How European Bank Transfers Work
Complete guide to SEPA payments — how they work, fees, transfer times, and the difference between SEPA Credit Transfer, Instant Credit Transfer, and Direct Debit across 36 European countries.