JIB (Jedinstveni identifikacioni broj) is the unique identification number assigned to legal entities in Bosnia and Herzegovina. It is the primary tax identifier used by the Indirect Taxation Authority (UIO / UINO) for indirect-tax registration, customs, and fiscal filings.

How many digits is a JIB?

A JIB is 13 digits. The first twelve form the base number and the thirteenth is a check digit computed from them with the ISO 7064 MOD 11,10 algorithm.

How does the ISO 7064 MOD 11,10 check work?

The algorithm starts with a running remainder of 10 and processes each base digit in order: t = (remainder + digit) mod 10, treating 0 as 10, then remainder = (t × 2) mod 11. After all twelve digits the check digit equals (11 − remainder) mod 10. This is the same scheme used by the Croatian OIB.

Is the JIB the same as a VAT (PDV) number?

No. The JIB is the entity identification number, while the PDV (VAT) number is a separate 12-digit identifier issued when a business registers for VAT. They often appear together on Bosnian invoices but are distinct identifiers from the same authority.

Is my JIB sent to a server?

No. Validation runs entirely in JavaScript inside your browser. Nothing is uploaded, logged, or stored, and the tool works offline once loaded.

Bosnia and Herzegovina JIB Validator

Bosnia and Herzegovina JIB at a glance

The JIB (Jedinstveni identifikacioni broj — “unique identification number”) is the primary identifier for legal entities in Bosnia and Herzegovina, administered by the Indirect Taxation Authority (UIO / UINO). It appears on indirect-tax registrations, customs documents, and fiscal invoices. The JIB is 13 digits, with the final digit acting as an ISO 7064 MOD 11,10 check digit over the first twelve.

How it works

The check digit is computed exactly like the Croatian OIB — ISO 7064 MOD 11,10:

rem = 10
for each base digit d (positions 0..11):
    t   = (rem + d) mod 10        // if t == 0, set t = 10
    rem = (t * 2) mod 11
check = (11 - rem) mod 10

The resulting check must equal the thirteenth digit. ISO 7064 MOD 11,10 detects all single-digit substitutions and all adjacent transpositions, which are the dominant transcription errors for a 13-digit number.

Tips and notes

Because the JIB shares its check-digit scheme with the OIB, the same step-by-step trace applies — expand it to audit each iteration by hand. A valid check digit confirms the number is mathematically well-formed but does not prove the entity is registered or active; only the UIO register can confirm that. When reconciling Bosnian supplier records, strip separators first since the JIB may appear with or without spacing.