Pour les transferts internationaux vers Sierra Leone, il faut impérativement connaître le code SWIFT/BIC de l’institution bancaire de destination.
Les codes SWIFT se composent de 8 ou 11 caractères (lettres et chiffres); dans le cas de Sierra Leone, ils ont le format suivant:
| Code SWIFT | Banque | Ville |
| ABSFSLFR | ACCESS BANK SIERRA LEONE LIMITED | FREETOWN |
| BSLESLFA | BANK OF SIERRA LEONE | FREETOWN |
| BSLESLFR | BANK OF SIERRA LEONE | FREETOWN |
| ECOCSLFR | ECOBANK SIERRA LEONE LIMITED | FREETOWN |
| FSTISLFR | FIRST INTERNATIONAL BANK (SL) LIMITED | FREETOWN |
| GTBISLFR | GUARANTY TRUST BANK (SL) LTD | FREETOWN |
| ICBZSLFR | INTERNATIONAL COMMERCIAL BANK(SL) LIMITED | FREETOWN |
| NCDBSLF1 | NATIONAL COOPERATIVE DEVELOPMENT BANK LTD. | FREETOWN |
| PCBSSLFR | PROCREDIT BANK SIERRA LEONE LIMITED | FREETOWN |
| PHBXSLFR | BANK PHB SIERRA LEONE | FREETOWN |
| RCBKSLFR | ROKEL COMML BANK (SIERRA LEONE)LTD | LONDON EC4N 8AS |
| SCBLSLFR | STANDARD CHARTERED BANK SIERRA LEONE LTD | FREETOWN |
| SKYESLFR | SKYE BANK (SL) LTD | FREETOWN |
| SLCBSLFR | SIERRA LEONE COMMERCIAL BANK, LTD. | FREETOWN |
| UNAFSLFR | UNITED BANK FOR AFRICA (S/L) LTD | FREETOWN |
| UTBSSLFR | UNION TRUST BANK LTD. | FREETOWN |
| ZESLSLFR | ZENITH BANK (SIERRA LEONE) LIMITED | FREETOWN |