SEPA
SEPA (the Single Euro Payments Area) is a European initiative that makes euro payments between participating countries as simple and standardised as domestic ones.
What it is. SEPA harmonises euro payments across a large group of European countries — the EU member states plus several others — so that a euro transfer between two SEPA countries follows the same rules, formats and timeframes as a payment within a single country. It removes the historic distinction between "domestic" and "cross-border" euro payments within the zone, meaning a business in one member state can pay or collect from another as easily as from its own country.
The core schemes. SEPA is built on standardised payment schemes: SEPA Credit Transfer for one-off and bulk euro transfers, and SEPA Direct Debit for recurring euro collections under a mandate — the euro-area equivalents of domestic credit transfers and direct debits. Payments use the IBAN as the account identifier and share a common data format, which is what allows them to move seamlessly across borders. The standardisation also simplifies reconciliation and reduces the errors that once plagued cross-border euro payments.
Why it matters. For any business operating across the euro area, SEPA dramatically simplifies collecting and paying in euros: a single account and a single set of scheme rules reach customers and suppliers in many countries. It is one of the foundations of the European single market for payments, and the base layer on which faster euro schemes have since been built. For businesses expanding across Europe, SEPA reach means they can serve euro customers without opening a bank account in every country they operate in. That reach is what makes SEPA a genuine single market for euro payments rather than a patchwork of national systems.