Test IBAN Generator - Valid Test IBANs

Test IBAN Generator - Generate Valid Test IBANs

Generate structurally valid IBAN numbers for software development and testing. Each generated IBAN has correct country formatting and valid check digits, making it pass standard validation routines while not belonging to any real bank account. Essential for testing payment integrations safely.

The generator builds the BBAN (Basic Bank Account Number) part by part in the order that country's IBAN specification prescribes, then computes the two check digits with the MOD-97 algorithm from ISO 13616. Belgium and France carry a second check digit inside the account itself, computed by the bank; the generator solves for it rather than filling in something random, so a Belgian or French number holds up against a validator that looks at more than MOD-97. British bank codes are four letters, not four digits, which is the kind of detail a generated number has to get right to be useful. Every number this tool produces is run through our own IBAN Validator in the test suite.

Payment developers test Stripe, Mollie, and Adyen integrations with valid test IBANs. QA engineers verify form validation on banking applications. Database developers populate test databases with realistic data. Compliance teams test SEPA payment processing without using real customer accounts.

Never use real customer IBANs in test or development environments - this violates GDPR and banking regulations. Always clearly label test data as non-production. Most payment service providers also offer their own sandbox IBANs, which should be used alongside generated test IBANs.

Compared to hardcoding a few test IBANs in your codebase, a generator produces fresh numbers on demand and supports multiple countries. For testing other Dutch identifiers, see our Test BSN Generator and Test Document Number Generator.