What are the differences between ach, wire, and swift transfers?

ACH transfers, also known as Automated Clearing House transfers, are electronic transfers of funds between bank accounts within the same country. Wire transfers are electronic transfers of funds between different banks or financial institutions, often involving a fee and processed quickly. SWIFT transfers, or Society for Worldwide Interbank Financial Telecommunication transfers, are international wire transfers that use a secure messaging system to facilitate the transfer of funds between banks globally.