AdvancedPayments1 min
Payment processing is the technical handling of payment transactions: authorisation and monitoring of a payment, collection and storage of the data and passing it on to the parties to the settlement.
In plain words
When you tap a card on a terminal, a chain runs in seconds: terminal, acquirer, payment system, issuing bank (a check of the balance, limit and security) and an “approved” or “declined” reply. A processing centre, run by a bank or a separate processing company, serves all of this. Processing does not move the money itself: clearing and settlement happen separately and later.
Sources
- Law of Ukraine “On Payment Services” No. 1591-IX of 30 June 2021 — Art. 1 (items 25, 59, 74, 75) (version of 26 June 2026). Checked 14.10.2026.
Example. An online payment got a “declined” answer in two seconds: the issuing bank’s processing checked the balance and the limit, and the bank refused it.