Question 1

How long is a Guinea-Bissau IBAN?

Accepted Answer

A Guinea-Bissau IBAN is always exactly 25 characters. It starts with GW followed by 2 check digits, then a 21-character BBAN. Example: GW04GW1430010181800637601.

Question 2

What does a Guinea-Bissau IBAN look like?

Accepted Answer

A Guinea-Bissau IBAN has the structure: 2-letter country code (GW), 2 check digits, and a 21-character BBAN with structure 2a+2n+19n. Full example: GW04GW1430010181800637601.

Question 3

Is Guinea-Bissau part of SEPA?

Accepted Answer

No, Guinea-Bissau is not a SEPA member. Transfers to Guinea-Bissau are international wire transfers and may incur additional fees and longer processing times.

Question 4

Why would a valid Guinea-Bissau IBAN be rejected?

Accepted Answer

A Guinea-Bissau IBAN can be rejected even if technically valid if the account is closed, the bank doesn't accept that transfer type, the IBAN isn't in the official registry, or regulatory restrictions apply. Our validator checks the official bank registry.

Question 5

How do I validate a Guinea-Bissau IBAN?

Accepted Answer

Validating a Guinea-Bissau IBAN involves 3 steps: 1) Format check (25 characters, structure 2a+2n+19n); 2) MOD 97-10 checksum; 3) Official bank registry lookup. Use our free validator at https://bankvalidor.com/en/validate/gw for instant, reliable verification.

IBAN Validator for Guinea-Bissau

IBAN Format for Guinea-Bissau

Validate an IBAN