E-Payment
E-commerce
 sites use electronic payment, where electronic payment refers to paperless
 monetary transactions. Electronic payment has revolutionized the business
 processing by reducing the paperwork, transaction costs, and labor cost. Being
 user friendly and less time-consuming than manual processing, it helps
 business organization to expand its market reach/expansion. Listed below are
 some of the modes of electronic payments −
- Credit
      Card
 
- Debit
      Card
 
- Smart
      Card
 
- E-Money
 
- Electronic
      Fund Transfer (EFT)
 
Credit Card
Payment
 using credit card is one of most common mode of electronic payment. Credit
 card is small plastic card with a unique number attached with an account. It
 has also a magnetic strip embedded in it which is used to read credit card via
 card readers. When a customer purchases a product via credit card, credit card
 issuer bank pays on behalf of the customer and customer has a certain time
 period after which he/she can pay the credit card bill. It is usually credit
 card monthly payment cycle. Following are the actors in the credit card
 system.
- The card holder − Customer
 
- The merchant − seller of product who can accept credit card
      payments.
 
- The card issuer bank − card holder's bank
 
- The acquirer bank − the merchant's bank
 
- The card brand − for example , visa or Mastercard.
 
Credit
 Card Payment Proces
 
  
   | 
    
Step 
 | 
   
    
Description 
 | 
  
   | 
    
Step 1 
 | 
   
    
Bank issues and activates a credit card to the customer on his/her
   request. 
 | 
  
   | 
    
Step 2 
 | 
   
    
The customer presents the credit card information to the merchant
   site or to the merchant from whom he/she wants to purchase a
   product/service. 
 | 
  
   | 
    
Step 3 
 | 
   
    
Merchant validates the customer's identity by asking for approval
   from the card brand company. 
 | 
  
   | 
    
Step 4 
 | 
   
    
Card brand company authenticates the credit card and pays the
   transaction by credit. Merchant keeps the sales slip. 
 | 
  
   | 
    
Step 5 
 | 
   
    
Merchant submits the sales slip to acquirer banks and gets the
   service charges paid to him/her. 
 | 
  
   | 
    
Step 6 
 | 
   
    
Acquirer bank requests the card brand company to clear the credit
   amount and gets the payment. 
 | 
  
   | 
    
Step 6 
 | 
   
    
Now the card brand company asks to clear the amount from the issuer
   bank and the amount gets transferred to the card brand company. 
 | 
  
 
Debit Card
Debit
 card, like credit card, is a small plastic card with a unique number mapped
 with the bank account number. It is required to have a bank account before
 getting a debit card from the bank. The major difference between a debit card
 and a credit card is that in case of payment through debit card, the amount
 gets deducted from the card's bank account immediately and there should be
 sufficient balance in the bank account for the transaction to get completed;
 whereas in case of a credit card transaction, there is no such compulsion.
Debit
 cards free the customer to carry cash and cheques. Even merchants accept a
 debit card readily. Having a restriction on the amount that can be withdrawn
 in a day using a debit card helps the customer to keep a check on his/her
 spending.
Smart Card
Smart
 card is again similar to a credit card or a debit card in appearance, but it
 has a small microprocessor chip embedded in it. It has the capacity to store a
 customer’s work-related and/or personal information. Smart cards are also used
 to store money and the amount gets deducted after every transaction.
Smart
 cards can only be accessed using a PIN that every customer is assigned with.
 Smart cards are secure, as they store information in encrypted format and are
 less expensive/provides faster processing. Mondex and Visa Cash cards are
 examples of smart cards.
E-Money
E-Money
 transactions refer to situation where payment is done over the network and the
 amount gets transferred from one financial body to another financial body
 without any involvement of a middleman. E-money transactions are faster,
 convenient, and saves a lot of time.
Online
 payments done via credit cards, debit cards, or smart cards are examples of
 emoney transactions. Another popular example is e-cash. In case of e-cash,
 both customer and merchant have to sign up with the bank or company issuing
 e-cash.
Electronic Fund Transfer
It
 is a very popular electronic payment method to transfer money from one bank
 account to another bank account. Accounts can be in the same bank or different
 banks. Fund transfer can be done using ATM (Automated Teller Machine) or using
 a computer.
Nowadays,
 internet-based EFT is getting popular. In this case, a customer uses the
 website provided by the bank, logs in to the bank's website and registers
 another bank account. He/she then places a request to transfer certain amount
 to that account. Customer's bank transfers the amount to other account if it
 is in the same bank, otherwise the transfer request is forwarded to an ACH
 (Automated Clearing House) to transfer the amount to other account and the
 amount is deducted from the customer's account. Once the amount is transferred
 to other account, the customer is notified of the fund transfer by the bank.
How do electronic payment systems work?
- The cardholder is identified as the consumer who purchases a
      product or service online.
 
- The merchant is the person or business that sells the product
      or service to the cardholder.
 
- The issuer is the financial institution that provides the
      cardholder with the payment card. This is usually the cardholder’s bank.
 
- The acquirer, or merchant account provider, is the financial institution that
      establishes an account with the merchant. The acquirer authorizes the
      legitimacy of the cardholder account.
 
- The payments processor handles the official transaction
      between the cardholder and merchant.
 
- The payment gateway processes merchant payment
      messages and uses security protocols and encryptions to ensure
      transaction safety.
 
What Is a
 Payment Gateway?
A payment gateway is an e-commerce application that authorizes payments for
 e-businesses, online retailers, bricks and clicks, or traditional brick and
 mortar businesses. It is the virtual equivalent of a physical point of sale
 terminal located in most retail outlets. Payment gateways encrypt sensitive
 information, such as credit card numbers, to ensure that information passes
 securely between the customer and the merchant. 
1. Hosted payment gateways
Hosted payment gateways direct your customer away
 from your site’s checkout page. When the customer clicks the gateway link,
 they are redirected to the Payment Service Provider (PSP) page. Here, the
 customer fills in his or her payment details, and after paying, is redirected
 back to your website to complete the checkout process. The most well-known
 example of a hosted payment gateway is PayPal.
2.
 Self-hosted payment gateways
With this type of gateway, payment details are
 collected from the customer within the merchant’s website. After the details
 are requested, the collected data is sent to the payment gateway’s URL. Some
 gateways require the payment data be provided in a specific format, whereas
 others require a hash key or secret key. TradeGecko
 Payments and Shopify Payments are examples of self-hosted payment gateways, and both are powered
 by Stripe. 
3. API
 hosted payment gateways
With API hosted payment gateways, customers enter
 their credit or debit card information directly on the merchant’s checkout
 page and payments are processed using an API (Application Programming
 Interface) or HTTPS queries.
4. Local
 bank integration
Local bank integration gateways redirect the customer
 to the payment gateway’s website (the bank’s website) where they enter their
 payment details and contact details. After making the payment, the customer is
 redirected back to the merchant website, with payment notification data sent
 upon redirection.
Micropayments 
 or  e-micropayments  are small online payments made online, usually under
 $10.From the viewpoint of many vendors, credit cards are too expensive for
 processing small payments.
The
 same is true for debit cards, where the fixed transaction fees are greater,
 even though there are no percentage charges. These fees are relatively small
 (in percentage) only for card purchases over $10. Regardless of the vendor’s point of view, there
is substantial
 evidence, at least in the offl ine world,
that consumers are
 willing to use their credit or
debit cards for
 small value purchases. In the online
world, the evidence
 suggests that consumers are
interested in
 making small- value purchases, but not
with credit or
 debit card payments. For example, as
noted
 in the opening case
electronic check (e-check)  is
 the
electronic clone of
 a paper check (containing the
same information).
 E-checks are a legal payment
method in many
 countries. They work in a process
similar to that of
 a paper check, but their processing
is more effi cient
 because several steps are automated.
With an online
 e-check purchase, the buyer simply provides
the merchant with
 his or her account number, the nine-digit bank ABA routing number,the bank
 account type (e.g., checking, savings,etc.), the name of the account
 holder,and theamount to be paid. The account number and routing
number are provided
 as magnetic ink character recognition (MICR) numbers and characters.
Payment methods in B2B EC:
1. Pay by Purchase
 Order
It is relatively common for business
 customers to “pay” via a purchase order. The challenge for the seller is to
 have precautions in place to ensure that only approved customers can use
 purchase orders, for preset credit limits. There are ways to make this
 work.
First, require potential customers to
 fill out an application that is reviewed by your customer service team.
 Merchants sometimes allow the prospects to place orders via credit card before
 their application is reviewed.
Next, enable approved businesses to
 place orders via purchase order.  Do this by logging into your ecommerce
 platform and indicate that approval and the credit limit. Alternatively, send
 the approval and credit amount to your ecommerce platform via an integration
 with your accounting or backend software. That integration can allow the
 ecommerce platform to track offline orders and factor those into the available
 credit balance.
2. Online Credit
 Management
For customers with extended payment
 terms, you may consider online credit management services, such as Apruve.
 This enables real-time credit approval for new customers and the merchant is
 paid within 24 hours of a shipment, minus financing fees.
This can help customers, too, as it
 allows multiple buyers within their organization to place orders, which are
 then lumped into a single invoice that is due on the 15th of the following
 month, or whatever payment terms are agreed to with the credit management
 service.
Thus an online credit management
 service can simplify your customer’s experience, and allow your company to get
 paid faster.
3. Procurement
 Punchout
Business customers typically have a
 purchasing department and may use software as a part of their purchasing
 workflow. You can make it easier to buy from you by integrating your ecommerce
 site with their procurement software. This is called a procurement punchout.
For sellers, there are two general
 approaches to this: Integrate with each different procurement software — such
 as Ariba, SciQuest, Coupa, SAP, Oracle — or integrate with a facilitator, such
 as PunchOut2Go, that provides a single integration point and enables you to
 offer a punchout to over 60 procurement software applications. (My company, I
 should add, is a reseller of Punchout2Go.)
Using a punchout, your buyer can start
 on your website and fill up his shopping cart. Once he is ready to place the
 order, he can “punch out” and send the data from the cart to his procurement
 system. The punchout solution can end there, or it can continue so that when
 the purchasing department approves the order, the purchase order is
 electronically transmitted back to your ecommerce site. An additional
 integration could electronically send your invoice to buyer’s system after the
 order has shipped.
In my experience, some business buyers
 require their suppliers to offer punchouts. Beyond that, some B2B sellers
 offer punchout solutions to entice larger customers or new customer segments.
4. ACH, e-Check
ACH and e-check payments are
 electronically withdrawn from the buyer’s checking account, transferred over
 an ACH network, and deposited into the seller’s checking account. You can
 configure your ecommerce platform to allow customers to pay via e-check or
 ACH. If you go this route, make sure the money is immediately available,
 without recourse, before shipping the order.
5. Credit Cards
In B2B ecommerce, the use of credit
 cards can be complex. The most common area of complexity occurs when the order
 costs are more than what was authorized during checkout. This is common in
 B2B, when shipping charges are unknown in checkout, and when customers can
 edit orders after they are first submitted.
In both of these instances, merchants
 typically involve a developer. The customizations include making additional
 API calls to the credit card gateway for additional authorizations against the
 customer’s credit card.
Regardless, make sure to use a
 processor that will store the credit card data without it residing in your
 system. This is important for security, and liability.
What is an
 electronic billing system?
Electronic billing systems are computer
 systems that assist with generating and delivering invoices and accepting
 customer payments. The flow of an invoice through an electronic billing system
 typically follows this path:
- Customer billing data is aggregated in
      a billing system
 
- Customer bill is generated by billing system
 
- Billing is passed to electronic billing system
 
- Bills are aggregated and sent to customer online
 
- Customer receives new bill notification email
 
There are two main types of
 electronic billing systems used for eBilling: biller-direct systems and
 bank-aggregator systems.
As already noted, most
 utility companies allow customers to log in to the utility website to view and
 pay bills. This is an example of biller-direct electronic billing.
Some bills can be integrated
 into a bank’s bill pay system. In this case, users can log in to their bank
 website and pay bills for several billers through the same interface. This is
 an example of bank-aggregator systems.
Biller-direct and
 bank-aggregator are also known as electronic billing formats.
What is the difference between eBilling and eInvoicing?
eBilling and
 eInvoicing have many similar aspects, but are not entirely the same
 thing. eInvoicing is simply sending invoices
 digitally, but the payment feature is not integrated as it is with eBilling. 
QuickBooks invoicing is an
 example of eInvoicing, as users can quickly send invoices by email but payment
 features are not automatically integrated.
True eBilling also includes
 the ability to pay as well. All-in one billing & payment tools are also
 known as AP automation software. On a utility or bank website, you can both view the
 invoice and submit an electronic payment. The process for businesses typically
 requires more advanced software than what a traditional bank offers.