Bulgaria IBAN Calculator

Enter a Bulgarian bank code and account number to generate a correctly formatted BG IBAN — right length, valid check digits, instantly in your browser.

Calculate a Bulgarian IBAN

Every Bulgarian IBAN starts with BG and two check digits, followed by a 4-character bank code and the account number — 22 characters in total.

Enter the local details below. The calculator pads the account number, computes the ISO 7064 check digits, and prints the result in standard four-character groups.

BG IBAN format

A Bulgarian IBAN packs the whole routing path into one string: BG, two check digits, the 4-character bank code, and a 8-character account section.

In the printed format, k marks the check digits, b the bank code, s the branch, c the account number, and x a national check character.

IBAN length
22 characters
Bank code
4 characters
Account number
Up to 8 characters
Check digits
2 digits after BG
Printed format
BGkk bbbb ssss ttcc cccc cc
Example IBAN
BG80 BNBG 9661 1020 3456 78

Frequently asked questions

  • A Bulgarian IBAN is 22 characters: the country code BG, two check digits, a 4-character bank code, and the account section. Printed in groups of four, it looks like BG80 BNBG 9661 1020 3456 78.

  • With the ISO 7064 mod 97-10 algorithm. The bank code, account number, and country code are converted to digits, and the two check digits are chosen so the full number leaves a remainder of 1 when divided by 97. The calculator does this for you and rejects any input that cannot produce a valid BG IBAN.

  • Yes. It runs entirely in your browser — the bank details you enter are never sent to a server, stored, or shared. There is no sign-up and no fee.

  • Yes — the calculator covers 41 countries. Pick a different country in the form above, or open its dedicated page from the list below.

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