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An ultimate guide to payment processing in 2024: What it is and how it works

Guide4 mins read | Posted on October 9, 2024 | By Tejasri V

You're on your Instagram, scrolling through reels, and you come across a handy home decor item that seems too good to pass up. You check out the brand's profile, visit their website, and read the details. The seller is based out of a country in Europe. The satisfying discount on overseas shipping teased you enough, and you decided to go ahead with the purchase. You enter your card details, make the payment, and within a couple of seconds, the transaction amount is debited from your bank account, and you get a notification on your phone. Within a few days, to your delight, you receive your item.

Did you ever think about how the amount was transferred from your bank account to another account, halfway around the world? How do the systems in place seamlessly facilitate such transactions? How are international online payments processed?

 

An ultimate guide to payment processing in 2024: What it is and how it works

How does payment processing work?

Payments are largely processed through cash, cards, checks, ACH, and digital wallets. When dealing with credit or debit cards, payment processing involves the customer, or the cardholder, the seller or the merchant, the issuing bank, the acquiring bank, the card network, the payment gateway, and the payment processor. These key terms are explained below.

  • Cardholder: The customer or the cardholder is the buyer.

  • Issuing bank: The cardholder's bank that issues the card and holds the cardholder's funds.

  • Merchant: The seller who uses an online store or a website for their products.

  • Payment gateway: A gateway that interfaces between the merchant's website and the payment processor, usually involved in transferring card information.

  • Payment processor: A software that processes the requests sent in by the payment gateway, involved in authentication and fund transfer between the merchant and the issuing bank.

  • Acquiring bank: An acquiring bank receives incoming payments and operates merchant accounts designed to accept card payments.

  • Card networks: Secure encrypted network systems designed to handle the transfer of cardholder information and funds between banks.

Steps involved in payment processing

Payment processing involves a series of steps associated with the transfer of funds between the issuing bank and the acquiring bank. Once you've decided to go ahead with the order, you check out from the page. You, as the cardholder, need to initiate the request, after which it is processed and then authenticated. After authentication, the request is authorized, and there are several exchanges of messages between the various networks, after which the funds are transferred and the transaction is settled.

Payment initiation

You initiate the transaction request after submitting the required details on the checkout page. Then, the cardholder details, such as the card number and the amount to be paid, are securely sent to the processor, as an encrypted request through the payment gateway.

Request processing

The payment processor then processes the request through decryption, and sends it to the acquiring bank. The acquiring bank recognizes the details sent by the processor and initiates a pull request with the issuing bank through the card network.

Authentication

The card network checks if 3 Domain Security (3DS) has been enabled on the card. If enabled, the customer is redirected to a verification page hosted by the card network and the issuing bank, where an OTP (one-time password) authentication is done. Once verified, the card network notifies the processor regarding the positive verification.

Authorization

The processor sends the authorization request to the acquiring bank, which then connects with the issuing bank to check whether the cardholder's account has available funds, and also determines if currency conversion is required. If required, the acquiring bank calculates the amount in the cardholder's currency against the current exchange rates and sends the authorization response to the payment processor.

Transfer and settlement

The processor notifies the merchant website of the successful payment through the gateway, and then you, as the cardholder, receive an order confirmation. The card network facilitates the transfer of funds between the issuing bank and the acquiring bank, usually by the end of the day, and the amount is transferred from the acquiring bank to the business's bank account through the processor. At the end of this process, your card statement is updated, and the item is delivered to your shipping address.

Conclusion

In today's interconnected world, the journey of an international online payment is underpinned by a sophisticated network of financial systems. At the heart of this process are the key players: the cardholder, the merchant, the issuing bank, the acquiring bank, and the intricate infrastructure of card networks and payment gateways. Each step—from the initial transaction initiation to authentication, authorization, and finally settlement—involves robust mechanisms to ensure security, reliability, and efficiency.

As society continues to embrace global commerce and digital transactions, understanding the intricacies of international payment processing not only enhances consumer confidence but also underscores the vital role of technology in shaping modern commerce. With secure protocols and reliable systems in place, the world of online global transactions opens up endless possibilities, bridging distances and connecting markets like never before.

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