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How The Payment Processing Industry Works; Stocks to Consider

“If money goes before, all ways do lie open.”

William Shakespeare

How many of you still carry cash, or how many of us still pay for anything with cash? If you are like me, not many of us. The use of credit cards, debit cards, and online payment processing has exploded over the last ten years. But do any of us understand how payment processing works?

The pandemic has only accelerated the move towards cashless transactions, to the point where stores like Walmart were running out of silver to return to customers because none of their customers were paying in cash.

Payment processing has many layers, and it can be a bit confusing until you understand how the payments flow from one point to the other. Most of us are familiar with Visa and Mastercard; they are some of the world’s most recognizable brands. But newcomers such as PayPal, Square, Venmo, and others enter the space and disrupt how payments are processed.

In today’s post, we will learn:

  • How Does Payment Processing Work?
  • How Do Payment Processors Make Money?
  • Different Investment Opportunities in the Payment Processing Sector
  • Investor Takeaway

Okay, let’s dive in and learn more about how payment processing works.

How Does Payment Processing Work?

When we swipe our cards, it seems like a pretty simple process, we swipe our Visa card, and voila, the payment is made in a few minutes. However, the process behind the scenes is far more complicated, even though it only takes seconds to complete. The card’s sliding and signing the receipt are only the first and last steps in the process. Although the process is quick, multiple stages and multiple actors behind the scenes enable it to happen seamlessly.

Surprisingly, one of the largest expenses most small business owners experience is credit card processing fees, but most are unfamiliar with the process or how the fees happen. As investors, it is important to understand the whole process to fully comprehend how a company like Visa or Square makes money.

Before diving into the actual transaction steps, let’s look at the six actors involved in this highly coordinated dance.

Key players:

  1. Cardholder: pretty self-explanatory, that’s us. There are two main cardholders, a transactor who pays for the bill in full, think of a debit card. The other is a revolver, someone who uses a credit card and pays part of the bill when due, while the balance accrues interest.
  2. Merchant: the store or vendor who sells services or products to the customer or cardholder. The merchant accepts electronic or plastic payments while also sending card information to the cardholder’s issuing bank. Also, receives payment authorization from the same bank.
  3. Acquiring bank/Merchant bank: the acquiring bank acts as the middle man between the merchant and bank. They receive the merchant’s payment authorization requests, send them through the right channels, and then relay the issuing bank’s answer to the merchant.
  4. Acquiring process/Service provider: A third party that is sometimes the arm of the acquiring bank. A service provider processes the payments by receiving and sending information from the merchant to the bank and back. In many cases, this party is not related to the issuing bank or maybe an extension of the bank. For example, Wells Fargo has an arm of their business department that processes payments for the bank. But other banks outsource this activity because they don’t want the hassle.
  5. Credit Card Network: Think Visa, Mastercard, Discover, and American Express. All of these entities operate the networks that process electronic payments worldwide while also governing interchange fees. As we have discovered, the credit card network receives the payment details for the acquirer, then sends the payment authorization query to the issuing bank, and sends the acceptance back to the acquiring processor.
  6. Issuing Bank/Card Issuer: Think JP Morgan, Wells Fargo, Chase. These are the financial institutions that issue us the plastic we use to buy stuff; the Visa card is from Chase, not Visa. The issuing bank is the one that receives the card authorization and either approves or declines.

That whole process only takes seconds, which is amazing when we think about it. Some confusion can arise from the whole process because the merchant bank can also be the acquiring bank in many cases. And then can handle several steps of the process and make it easier for the issuing bank to process payments.

In some cases, the merchant/acquiring bank and issuing bank are all part of the same company. For example, JP Morgan Chase offers their customers all the aspects of card processing, so they act as the go-between for the merchant and the card networks such as Visa.

In other words, Chase issuers the merchant a machine that allows them to process customers’ cards either online or in the store; they then process the payments by sending it through the network via Visa and then deposit the money in the merchant’s account, which is at Chase. All of that allows the merchant to house all of the processing and deposits in the same place, saving them time and money.

Next, let’s cover the actual process a bit more, so we understand the process.

Card processing, either online or in the store, happens in three distinct processes:

  • Authorization
  • Settlement
  • Funding

Let’s first look at how cards are authorized:

  1. The cardholder presents their card in person or virtually to a merchant in exchange for products or services. The request might come in the form of a card terminal in-store, POS (point-of-sale) system, or through the e-commerce gateway on the merchant’s website. Payment processing can also occur through a merchant’s mobile or in-app process.
  2. Once the payment is received, the merchant sends an authorization request to the payment processor.
  3. The payment processor sends the request through the appropriate network, either Visa or Mastercard, for example. The payment eventually reaches the issuing bank.
  4. The authorizations are made to the issuing bank, including CVV numbers, validation, and expiration dates.
  5. Then the issuing bank either approves or declines the transaction.
  6. The issuing bank then sends the approval or denial back the way it came, to the card association, merchant bank, and back to the merchant.

Pretty simple, huh?

An easy way to think about the flow is to visualize a highway. First, we get on the highway headed for our destination, in this case, the issuing bank. We get on our highway through a ramp (merchant processor); once on the highway, we choose which direction to go (credit card association, Visa/Mastercard); once we decide on the direction, we arrive at our destination, the issuing bank.

Now, let’s look at a simplified process of the settlement and funding of card payments.

  1. Merchants send authorized batches of transactions to their payment processer, often at the end of the business day or predetermined time.
  2. The payment processor passes details on the transactions to the card associations who communicate the appropriate information to the issuing banks on their networks.
  3. The issuing bank debits the cardholder’s account for the transaction.
  4. The issuing bank then transmits the funds to the merchant bank, minus interchange fees.
  5. The merchant bank deposits the funds in the merchant’s account.

Pretty simple, huh? Considering this all happens overnight when it used to take days. Allows the merchant to get their money quicker, helping with their cash flows.

How Do Payment Processors Make Money?

When a merchant accepts a card payment, either with debit, credit card, or online payment, they are processing the payment for the customer’s convenience. But that convenience comes at a cost to the merchant in the form of fees.

Because of these fees, many merchants will look for the cheapest processors or markup their products to cover the fees’ cost. In some cases, some small businesses choose not to offer card payments because the fees eat too much into their profits.

For example, let’s say a merchant charges $100 for a product, and we pay for it with our credit card. The merchant may receive that $100 in their deposits or receive it minus the processing fees, which might equal $3. Therefore the merchant will get a deposit of $97 in their account or receive a bill later for the $3.

To determine how payment processor gets paid, let’s look at the breakdown of fees and how that $3 gets divided among the different sector players.

Much of this structure depends on the merchant’s transaction volume and what kinds of rates they can negotiate. There is also some variability in the fees the processors charge, depending on the transaction type. Many of the fees are flat fees, per-transaction, or volume-based fees.

For the sake of avoiding complete confusion, we will discuss some of the major fees.

Merchant Discount Rate

The discount rate is the fee that merchants pay for the ability to accept card transactions. The fees are the basis of the services provided from one of the following:

  • Merchant banks
  • Acquiring banks
  • Payment processors
  • All of the above in one entity

The fees range between 2% to 3%, with online merchants paying the higher end of the scale, but the fees can go as high as 5%. The charge of the discount fee comes adding sales tax to the bill. There are several components of the discount rate:

  • Interchange fee – Visa and Mastercard rule the roost, and this is the fee they charge for using their networks to process payments. The acquiring bank and processor pay this fee to the issuing bank. Most fees in the payment processing world come in multiple parts, and the interchange fee is no different. A percentage goes to the issuing bank (Capital One), and a fixed transaction fee goes to the credit card network (Visa). For example, the per-swipe fee might be 2.35% plus $0.15. The interchange fees can vary depending on the type of card swipe, for example:
    • The physical presence of the card
    • Lack of physical presence of the card
    • Manually entered
    • Card type – rewards, bonus, Black Card
  • Assessments – Visa and Mastercard charge this transaction fee for sales done with their branded cards. The fee is usually determined by the volume of transactions processed during the month. The fee is generally fixed and is not negotiated by the acquiring bank. Visa, for example, might charge 0.11% for assessment, plus $0.0195 per card swipe. Both the interchange and assessment fees account for around 75% to 80% of card processing fees.
  • Markups – the other 25% to 30% of card processing fees comes from the markup of interchange and assessment fees from acquiring banks or processors. The markups can vary by the processor and different pricing models.

The above fees are the major ones for payment processing, there are additional fees the companies can charge, but the ones that most directly affect both the merchant and payment processors are above.

Let’s do a quick exercise to follow the money.

The customer goes into their favorite store and purchases an item for $100. Let’s follow the flow of money, for the 3% or $3 of the discount rate that the payment processing companies charge:

  • Merchant acquirer (Global Payments, FIS, Square, PayPal) – $0.75
  • Merchant processor – $0.10
  • Credit Card Network (Visa, Mastercard) – $0.15
  • Issuing Bank – (Bank of America, CapitalOne) – $2
  • Merchant – receives $97 for sale, fees already deducted

The above is a simplified example of how the merchant’s cash flow goes from the payment processing system and back to the merchant. If you want to see a great video breaking it all down, check out this link.

Once we break it down, it is not so complicated, there are many levels to understand, but once we decode the system, it makes much more sense.

Different Investment Opportunities in the Payment Processing Sector

Like many tech world areas, there are multiple opportunities to find investment ideas in the payment processing industry.

Let’s start with the merchant acquirers, who are typically the customer-facing merchants who acquire the merchant’s payment processing, say a small baseball card shop.

These merchant acquirers can own the whole payment processing ecosystem, except for the credit card processing network such as Visa and Mastercard. But for our purposes here, let’s break it down by different payment processing system segments. One thing to note, you might see the same company at different stages of payment processing.

Merchant Acquirers



Market Cap

Global Payment Network



Fidelity National Information









JP Morgan



Bank of America






Credit Card Network



Market Cap







Issuing Banks



Market Cap

American Express



Capital One






JP Morgan



Wells Fargo



The above are just some examples of possible investments and are all in various payment processing experience stages. As with any investment, we must do our due diligence to find the opportunity that works best for our portfolio and risk tolerance.

All the companies are great businesses; some are in the growth stage, such as Square and PayPayl, while others such as Visa and Mastercard are more mature. But just because it is a little old in the tooth doesn’t mean it isn’t important to the economy or has a crucial impact on the processing network.

Investor Takeaway

The payment processing segment is a vital, growing part of the economy and has exploded in usage with the pandemic’s stay-at-home orders. The evolution towards a cashless system was already well underway, but the pandemic only accelerated that evolution.

With most consumers using either their phones to make payments online or with their mobile wallets, the trend will only accelerate. And with the rise in cryptocurrencies, who knows where the payment space will lead.

Recently, I read that Walmart is embracing the idea of creating their bank to capture some of the profits available in payment processing. When you think about it, it makes sense because they are a low-cost provider and those processing fees eat into their bottom line. And if they can capture that additional 0.50% to 0.75% to their profits, that is a move worth taking.

As with any investment, we must understand how the business makes money. And decoding the payment processing ecosystem is something that has interested me for quite some time. As with my interest in banks, it only made sense to learn more about how payments are processed.

There are many great companies in this space, but make sure you understand the business’s economics before putting your hard-earned money to work in this space.

With that, we will wrap up our discussion for today.

As always, thank you for taking the time to read today’s post, and I hope you find something of value in your investing journey. If I can be of any further assistance, please don’t hesitate to reach out.

Until next time, take care and be safe out there,