Why cross-border payments are slow
A step-by-step look at what happens between a payment instruction and the money arriving in another country.

A payment to another country rarely travels in a straight line. The sender's bank often has no account with the receiving bank, so it reaches an intermediary that holds accounts at both ends of the route, called a correspondent. Sometimes two or three such links are needed. Each link receives a message, checks it against its own records, updates its books and passes the instruction on. Messages and the actual movement of funds are separate steps, and funds can only move while the relevant systems are open. Time zones and weekends therefore matter. A payment that leaves one country on a Friday afternoon may wait for a market that opens on Monday morning, which has nothing to do with the technology carrying the message.
Compliance checks add further stops. Every institution in the chain screens names and amounts against sanctions and anti-money-laundering rules, and a mismatch in a name or address can pause a payment until someone resolves it by hand. Banks also keep pre-funded balances abroad, and holding that money idle is a cost they weigh when choosing routes. Stablecoins offer an alternative rail that runs at any hour, yet the sender and receiver still need a way in and out of local currency, and those on-ramps and off-ramps bring their own checks and their own delays. A faster middle section does not remove the slow ends.
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