CZ IBAN Generator

The tool accepts a 4‑digit CZ bank code and a 16‑digit account number to produce a CZ IBAN. It operates without UI specifics, focusing on the domain logic and outputs. The process follows the ISO IBAN standard by constructing the BBAN from the bank code and account number, calculating the two check digits, and presenting the final 24‑character IBAN. The result is formatted in blocks of four characters for readability while remaining machine‑parsable. This is useful for accountants, treasury teams, and payment professionals who prepare Czech cross‑border payments. Conceptually, the tool performs normalization, BBAN assembly, check-digit computation via modulus 97, and then final formatting. In practice, a user would supply a 4‑digit bank code (e.g., 0300) and a 16‑digit account number (e.g., 1234567890123456); the system computes the two check digits and returns an IBAN like CZkk 0300 1234 5678 9012 3456. The value lies in correctness, speed, and standardization—avoiding manual errors and ensuring consistency with banking formats. Beneficiaries include SMEs, freelancers, and finance teams handling Czech bank accounts and international payments. Unique value comes from strict adherence to CZ BBAN length, automatic check-digit generation, and consistent 4‑character grouping; the tool remains agnostic to live bank directories and is suitable for pre-validation, invoicing, and payment preparation.