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.