Detect invalid lengths, wrong country formats and failed IBAN check digits before payment data is saved.
IBAN validation API
Validate IBANs before payments fail
Use the IBAN-Test REST API to validate IBAN format, country rules, check digits and available bank data before IBANs enter your payment workflow.
Built for forms, SaaS products and payment workflows
IBAN validation is most useful before a customer submits a form, before SEPA data is stored and before payment files are generated. The API lets you run the same checks automatically in your own application.
For supported countries, return bank details such as institution, city or BIC when directory data is available.
Integrate IBAN checks into onboarding, checkout, ERP, accounting and back-office processes.
curl -H "Authorization: Bearer YOUR_API_TOKEN" \
"https://www.iban-test.eu/api/iban/validate?iban=DE89370400440532013000"A formally valid IBAN does not automatically prove that an account exists or can receive payments. IBAN-Test helps reduce avoidable input and plausibility errors before submission.