Flat Rate vs. Interchange Plus: Which Credit Card Processing Model Will Save You More?

An overview of flat rate and interchange plus pricing models, highlighting which option can offer greater savings for your business.

Greg Turner | Merchant Services and POS systems expert

8/19/20243 min read

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black Android smartphone

Choosing the right pricing model for credit card processing is a critical decision for any business owner. With transaction fees impacting your bottom line, understanding the differences between flat rate and interchange plus pricing models can help you make an informed choice that aligns with your business goals. This article will break down the two most common pricing structures, highlighting their pros and cons, and guiding you towards the most cost-effective option for your business.

Understanding Flat Rate Pricing

Flat rate pricing is a simple and straightforward model where the processor charges a fixed percentage on every transaction, regardless of the card type, transaction size, or risk level. For example, you might be charged 2.75% on every credit card transaction, whether it’s a $5 coffee purchase or a $500 electronics sale.

Pros of Flat Rate Pricing:

  • Simplicity: The primary advantage of flat rate pricing is its simplicity. Business owners know exactly what they’ll be charged on every transaction, making it easier to predict costs and manage cash flow.

  • Transparency: With flat rate pricing, there are no hidden fees or complex calculations. The rate you see is the rate you pay.

Cons of Flat Rate Pricing:

  • Higher Costs for Larger Transactions: Flat rate pricing can become costly for businesses with high transaction volumes or larger average ticket sizes. Since the same percentage applies to every transaction, you might end up paying more than you would with a different pricing model.

  • Lack of Flexibility: Flat rate pricing doesn’t account for the nuances of different card types or transaction methods, which can lead to overpaying compared to other pricing models.

Understanding Interchange Plus Pricing

Interchange plus pricing, on the other hand, is a more detailed model that separates the costs charged by the card networks (the interchange fees) from the processor’s markup. In this model, each transaction incurs the actual interchange fee set by the card networks (which varies depending on factors like card type and transaction method) plus a fixed percentage or flat fee added by the processor.

Pros of Interchange Plus Pricing:

  • Cost Transparency: Interchange plus pricing provides a clear breakdown of costs, showing exactly what you’re paying to the card networks and what goes to the processor. This transparency can be particularly valuable when comparing different processors.

  • Potential for Lower Costs: Because interchange fees vary, businesses with lower-risk transactions or those that primarily accept debit cards (which generally have lower interchange fees) can benefit from lower overall costs compared to flat rate pricing.

  • Flexibility: This model adapts to the specific details of each transaction, ensuring you’re not overpaying on smaller or less risky transactions.

Cons of Interchange Plus Pricing:

  • Complexity: Interchange plus pricing can be more complex to understand and predict, especially for businesses unfamiliar with the various interchange rates and how they apply to different transactions.

  • Variable Costs: While this model can offer savings, the variability in interchange fees means your costs may fluctuate month to month, which could make budgeting slightly more challenging.

Which Model Will Save You More?

The best pricing model for your business depends on your transaction patterns. If your business processes a high volume of smaller transactions or if simplicity and predictability are your top priorities, flat rate pricing might be appealing. However, if you want to optimize your costs and don’t mind a bit more complexity, interchange plus pricing can often provide greater savings, particularly for businesses with varied transaction types and sizes.

Interchange plus pricing typically benefits businesses that process a significant volume of debit transactions, large transactions, or transactions with cards that have lower interchange rates. This model’s transparency also allows for better negotiation with processors, potentially leading to even more savings.

Conclusion: Make an Informed Choice

Understanding the differences between flat rate and interchange plus pricing is essential for choosing the right credit card processing model for your business. While flat rate pricing offers simplicity and predictability, interchange plus pricing often delivers greater savings and flexibility, especially for businesses with diverse transaction profiles.

If you’re considering accepting card payments for the first time or are thinking about upgrading your existing POS solution, it’s worth exploring how a transparent interchange plus model could benefit your business. Our team at Prosperity Payments is here to help you navigate these options and find the best fit for your needs. We guarantee to provide the most cost-effective solutions, ensuring you keep more of your hard-earned revenue.

Contact us today to learn more about how we can work together to enhance your payment acceptance practices and reduce your costs.