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Payment Processing 101: Interchange Plus Rates vs. Flat Rates

Payment Processing 101: Interchange Plus Rates vs. Flat Rates

Understanding credit card processing fees is one of the more difficult parts of being a small business owner. Understanding the difference between interchange plus rates vs flat rates can be enough to make you pull out your hair.

If that sounds familiar, then read on. We’ll explain the ins and outs of these two pricing models in simple, straightforward terms. Along the way, we’ll help you understand which approach is right for your business.

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Credit card processing overview

Before comparing interchange plus vs. flat rate processing, let’s dive into a basic overview of how credit card processing works.

There are several parties involved in a typical credit card transaction:

  • Issuing Bank. This is the organization that issues a credit card to a customer. Common examples include Chase, Citibank and Bank of America.
  • Credit Card Networks. These entities work with issuing banks to distribute their credit cards. Examples include Visa, Mastercard and Discover.
  • The Acquirer. Colloquially referred to as a processor, this is the middle man that communicates with the issuing bank to approve or decline a credit card transaction. These are also called merchant service providers (MSPs) or Independent Sales Organizations (ISOs)

Behind every seemingly simple swipe sits a complex chain of communication between these three entities. When a customer swipes or dips their card, the transaction is sent to the issuing bank via the acquiring bank. The issuing bank then approves or declines the transaction and then funds are deposited into the merchant’s bank account. The credit card networks provide the technology and communication infrastructure that facilitates electronic payments.

 

Credit card processing fees

Now let’s learn about the fees you’ll need to pay to the processor. These fees inform the pricing model used by the credit card processing companies, and are a precursor to the processing rate you’ll pay to both interchange-plus and flat rate processors. They vary based on where you do business.

Wholesale rate

This percentage fee (usually a per transaction percentage) is set by both the issuing banks and the credit card companies like Visa and Discover. Because of this, it’s not possible to negotiate this rate. It’s the same for all merchants.

However, this rate will differ depending on the type of transaction. For example, a keyed-in transaction will always have a higher fee than a swiped one. Wholesale rates are commonly called interchange rates or an interchange fee.

Processor markup

This is a per transaction fee that processors will add on top of the interchange rate. Usually, it’s around $0.10 per transaction, but this can vary between processors and transaction types. Because this is set by the processor, there’s some room for negotiation. If you transact at a high volume, you can often negotiate a lower markup.

Miscellaneous fees

If you work with a good processor, you shouldn’t have to deal with many more fees than the above, but there are a few you might need to pay. For example, credit card terminal rental fees, PCI compliance fees, instant deposit fees, a subscription price that’s a flat fee per month and more. Some of these fees may pay for services you actually want and use, and that’s fine. Just try to minimize unnecessary fees or hidden fees to keep your costs down.

Payment Processing 101: Interchange Plus Rates vs. Flat Rates

 

Flat rate pricing

Flat rate pricing is exactly what it sounds like. When you use a flat rate processor, all of your transactions fall under one flat rate. This rate includes both the interchange or wholesale rate plus the processor’s markup.

Pros of flat rate processing

  • It’s easy to understand. Credit card processing fees and pricing can be pretty complicated. It’s made worse when processors go out of their way to be as non-transparent as possible. With flat rate processing, you pay the same amount for every transaction, which can be refreshingly simple.
  • It’s predictable. As a small business owner, life likely keeps you guessing, but some measure of predictability is the key to staying sane. With a single rate it’s easier to predict your processing expenses month to month, which can help you budget effectively.
  • It allows you to accept elite cards without extra cost. Certain cards (we’re looking at you, American Express) charge higher rates. Those rates often exceed the low, flat processing rates available today from processors.

Cons of flat rate processing

  • A lack of transparency. The simplicity and predictability of flat rate pricing can come at a cost. The processor hides both the interchange rate and their markup from you. This makes it impossible to understand why you’re paying what you are. Since you don’t know the details of what you’re paying, it makes it more difficult to shop around to find the best price.
  • Some transactions are more expensive. As we mentioned earlier, there are many different types of transactions, and each has a different interchange rate. Some are more expensive and some are less. When all transactions cost you the same amount, you lose out on any cost savings you might get based on the transaction type.

 

Interchange plus pricing

The alternative to flat rate processing is interchange plus processing. Similarly, the name describes this type of pricing as well. You pay the interchange rate plus the processor’s markup. The biggest difference is that your monthly credit card statement will show you the exact fees that make up each transaction.

Pros of interchange plus pricing

  • Transparency. While it has the potential to make your credit card statement more complex than you might like, with interchange plus you’ll always see the fees you’re paying for each transaction. Not only does this help you know if you’re paying a fair price, it helps you shop around to find the best price.
  • Some transactions are more affordable. For example, debit card transactions are typically less expensive than credit.

Cons of interchange plus pricing

  • It’s more complex. Because each transaction has a different price associated with it, and you can’t predict the exact number and type of transactions you’ll get each month, your costs become harder to predict.
  • Some payments are more expensive. Certain charges, like those from elite cards, have high interchange rates associated with them. When processor fees are added to those high rates, the resulting fee might be more expensive than a flat rate pricing model.

 

Which is right for your business?

As a side note, we encourage you to avoid processors that use a tiered pricing model or bundled pricing at all costs. These are hands down the least transparent type of provider and you’ll almost always end up paying more than necessary.

Choosing between flat rate pricing and interchange plus pricing isn’t always an easy decision. Payment processing is an integral part of most businesses. And as such, you’ll want to take the time to do the appropriate research, model out processing fees based on your average transaction value, and fully understand the pricing plan for each of the processing companies. Most modern processors today have moved to a flat rate model, because it’s generally simpler for all involved parties.

It’s usually easier to combine your payment provider with your point of sale for one integrated payments solution. The two are closely connected, and if you have questions you can interact with the same support team. There’s also less chance for human entry error, since the entire payment from beginning to end is managed by the same provider. For instance, we at Lightspeed offer a low flat rate and a customized rate for businesses that process more than $250k. Learn more about Lightspeed Payments.

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