Costa Rica IBAN validator
How the IBAN format works
- Format
- CR + 2 check digits + 18-digit bank/branch/account number (22 chars)
- Example
- CR05015202001026284066
Things to watch for
- 22 characters total, all numeric after the country code
- Checks structure and checksum only, not that the account exists
^CR[0-9]{2}[0-9]{18}$A Costa Rican IBAN is 22 characters: “CR”, two check digits, and 18 digits with no letters anywhere, combining the bank, branch, and account number into a single numeric block. Costa Rica runs one of the more digitized banking systems in Central America, and its national payment infrastructure — overseen by the Central Bank of Costa Rica — treats IBAN as the everyday domestic account format rather than a special international-only version, which is why Costa Rican bank statements typically show the full IBAN directly rather than a separate shorter account number.
How this validator works
This tool checks for the “CR” prefix, confirms exactly 18 digits follow the two check digits with no letters present, and then runs the mod-97 (ISO 7064) checksum a correctly generated Costa Rican IBAN must satisfy — entirely client-side in your browser, with nothing sent to a server and no signup required.
What a pass doesn’t tell you
A pass confirms the 22 digits are correctly formed and pass the checksum, not that the account exists, is open, or belongs to whoever you intend to pay. This validator never queries the Central Bank of Costa Rica or any commercial bank — it’s a pure structure-and-arithmetic check. If a Costa Rican IBAN fails, re-verify the digit groups against the original statement or invoice one segment at a time, since an 18-digit unbroken block is easy to mis-split by eye.
Scope: structure and mod-97 checksum validation for Costa Rican IBANs only — not payment processing, bank verification, or confirming an account is active. Catch the typo here; confirm the account with your bank.
Content last reviewed 2026-07-09.
IBAN FAQ
What does a Costa Rican IBAN look like?
22 characters, entirely numeric after the prefix: 'CR', two check digits, then 18 digits covering the bank, branch, and account identifiers — for example CR05015202001026284066. There's no letter block anywhere in the format.
Is IBAN the standard account format inside Costa Rica, not just for international transfers?
Yes — Costa Rica's national payment system, run through the Central Bank of Costa Rica, uses IBAN as the standard account identifier for domestic transfers, not only for money coming from abroad, so a Costa Rican bank account's everyday number is already in IBAN form.
Does a passing result confirm the Costa Rican account is active?
No. This tool only checks that the 22 digits are correctly structured and pass the mod-97 checksum. It does not contact the Central Bank of Costa Rica or any commercial bank, so it can't confirm the account exists, is open, or belongs to a specific person.