Card Networks and Payment Rails
Follow a card payment from the terminal through the network, the issuer, and settlement, and see where the money waits along the way.
Five payment rails do most of the work globally, and each one fails differently when it crosses a border.
Visa and Mastercard move authorization messages between acquirers and issuers in seconds, but settlement happens later. That gap explains chargebacks, holds, and why a declined card often has nothing to do with your balance.
Read about card networks
Systems like FedNow, SEPA Instant, and UPI settle in seconds, but each has its own cutoffs, message formats, and limits. Knowing which rail a transfer uses tells you whether funds arrive in a minute or on the next business day.
Read about real-time transfers
A payment that crosses a border may pass through correspondent banks, currency conversion, and sanctions screening before it lands. Each hop adds a fee and a delay, and the exchange rate applied is often set by an intermediary rather than the sender's bank.
Read about cross-border feesDirect debit explained: how the mandate works, the five steps from authorisation to settlement, and where payer protection depends on national scheme rules.
· Bank Transfers and Real-Time Payment Systems
Bank Transfers and Real-Time Payment Systems
BLIK explained: how Poland's six-digit mobile payment code works at checkout, in shops and at ATMs, and what merchants need to know about refunds and...
· Digital Wallets and Mobile Payments
Digital Wallets and Mobile Payments
WeChat Pay lets Chinese customers pay by QR code or in-app. Here's how it works and how foreign merchants can accept it through a payment provider.
· Digital Wallets and Mobile Payments
Digital Wallets and Mobile Payments
Open banking lets payments move straight from bank account to merchant, no card network. See how account-to-account payments work and what to check first.
· Bank Transfers and Real-Time Payment Systems
Bank Transfers and Real-Time Payment Systems
ACH payments move money between US bank accounts in one to two days. See how the network clears transfers, what it costs, and when reversals happen.
· Bank Transfers and Real-Time Payment Systems
Bank Transfers and Real-Time Payment Systems
You hit send. The app says "sent." Then... nothing. For a day. Maybe three. That dead air isn't a glitch. It's a relay race running through correspondent...
· Cross-Border Payments, Fees, and Settlement
Cross-Border Payments, Fees, and Settlement
