Question 1

Do you still need a BIC?

Accepted Answer

Inside SEPA, most euro transfers no longer require one: the IBAN alone is enough. You will still be asked for a BIC on many international transfers, older payment forms and some payroll or invoicing systems.

Question 2

BIC or SWIFT code?

Accepted Answer

The same thing. BIC is the official name (Business Identifier Code, ISO 9362); SWIFT is the organisation that issues them, so the code is often called a SWIFT code.

Question 3

Why can’t a BIC be calculated from an IBAN?

Accepted Answer

An IBAN contains a national bank identifier, not the BIC. The two are linked by directories that each country’s central bank or payments body maintains, which is what this tool looks up.

Identifier	Primary BIC	Branch BICs	Status
81200003	—	— none published	Current
82640002	—	— none published	Current
84370002	POLUPLPR	— none published	Current
84420000	POLUPLPR	— none published	Current
84421010	POLUPLPR	— none published	Current

Śląski Bank Spółdzielczy "Silesia" w Katowicach

BIC / SWIFT codes · 1

Bank identifiers in Poland IBANs · 5