Montenegro IBAN validator
How the IBAN format works
- Format
- ME + 2 check digits + 18-digit bank/branch/account number (22 chars)
- Example
- ME25505000012345678951
Things to watch for
- 22 characters total, all numeric after the country code
- Checks structure and checksum only, not that the account exists
^ME[0-9]{2}[0-9]{18}$A Montenegrin IBAN is 22 characters, entirely numeric after the country code: “ME”, two check digits, and an 18-digit block that combines bank code, branch code, and account number. One quirk of Montenegro worth knowing when dealing with its banking system: the country uses the euro as its everyday currency despite never having joined the EU or the eurozone, having adopted the currency unilaterally in 2002 — but that’s a monetary fact about the country, not something encoded anywhere in the IBAN’s digits, which follow a standard national structure like any other format on this site. Anyone paying a Montenegrin business, sending funds to a hotel or supplier there, or filling in an international transfer form needs the full 18-digit block correct, since it’s a continuous run of digits with no separators to check your position against.
How this validator works
The check confirms the “ME” prefix, verifies exactly 18 digits follow the two check digits, then runs the real mod-97 checksum (ISO 7064) used to generate valid Montenegrin IBANs — entirely client-side, nothing sent to a server, no signup, result the moment you stop typing.
What a pass doesn’t tell you
A pass means the 22 digits are internally consistent — not that the account exists, is open, or belongs to whoever you expect. This tool performs no bank-name resolution and never contacts the Central Bank of Montenegro or any commercial bank. If a Montenegrin IBAN fails, double-check you haven’t accidentally entered a Serbian or Bosnian number instead — the digit-heavy shapes look similar at a glance, but the two-letter prefix and exact length differ.
Scope: Montenegrin IBAN structure and mod-97 checksum validation only — not payment processing or proof an account is active. Use this to catch a typo before a transfer fails; your bank confirms the account itself.
Content last reviewed 2026-07-09.
IBAN FAQ
What length and format does a Montenegrin IBAN use?
22 characters: 'ME', two check digits, and an 18-digit block covering bank, branch, and account, entirely numeric — for example ME25505000012345678951.
Montenegro uses the euro — does that change the IBAN format?
No. Montenegro adopted the euro unilaterally without joining the EU or the eurozone formally, but its IBAN structure is a standard national format like any other non-euro-area country's — the currency an account holds isn't encoded in the IBAN's structure itself.
Does a passed check mean the Montenegrin account is verified?
No. This tool checks structure and the mod-97 checksum only, in your browser, with no lookup against the Central Bank of Montenegro or any commercial bank's records.