The phrase “cheapest credit card processing” often misleads merchants. Credit card processing fees are comprised of several different fee layers. Visa states that merchants do not pay the interchange fees directly to Visa. Instead, merchants pay a merchant discount rate to their financial institution for processing their credit card transactions. The merchant discount rate can include a variety of processing services. Mastercard states that the interchange fee between the merchant and the bank is just one component of the merchant discount rate that the merchants pay to the acquirers.
Rather than focusing on the cheapest fee, merchants should focus on lowering the cost of credit card processing for their business. There are several ways to lower the cost of credit card processing for a business. Depending on the business, the cost can be lowered by negotiating the markup with the credit card processor. Additionally, other costs can be reduced by improving debit routing, reducing card-not-present transactions, narrowing the scope of PCI requirements, and eliminating non-transaction costs. This article will discuss what “cheapest payment processing” means, who should care about the cost of payment processing, and a variety of ways to reduce the costs of payment processing for a business that operates credit card transactions.
What Cheapest Merchant Services Really Mean
The cheapest merchant services often rely on the wrong metrics to determine whether a company is truly the cheapest available to merchants. While Mastercard states that the interchange rates are just one of many components included in the merchant discount rate, the merchant services processor often lists separate fees for fixed per-transaction costs, processor markups, cross-border fees, chargeback fees, and pass-through network fees. Two merchants who quoted the same rate will have different costs associated with them, based on the listed fees. Thus, the cheapest merchant service should be based on the merchant’s total operating costs, not on the seeming cheapness of the initial quote.
Who Should Focus on Lowering Payment Processing Costs?
This matters most for merchants with sufficient volume or fee complexity, where small changes can make a difference. That includes merchants of all types, but most importantly:
- Retailers and service businesses with sufficient transaction volumes
- Merchants that have high volumes of transactions that use debit payment methods
- Merchants that take both in-person and online payments
- B2B merchants with different qualification criteria for their transaction data
- Merchants that receive high volumes of chargebacks, payments made through the PCI standard, or fees that are not related to the transaction
- Merchants that process payments under different pricing models than other merchants in their industry
The fewer margins merchants have, the more important it is for them to understand their transaction fees. Merchants of all sizes should care about this topic, but merchants with high transaction volumes will notice the impact of fee changes more than those with lower volumes.
Comparison Table: Common Pricing Models
Merchants searching for the cheapest payment processing option are often really comparing pricing models, not just providers.
| Pricing Model | How It Works | Main Advantage | Main Tradeoff | Usually Best For |
|---|---|---|---|---|
| Flat rate | One fixed percentage and per-item fee for most transactions | Simple and predictable | Can be expensive if your card mix is cheaper than the flat rate assumes | Smaller merchants that value simplicity |
| Blended / bundled | Several fee layers are grouped into one merchant rate | Easier to quote and reconcile at a glance | Less transparency into what is markup versus pass-through cost | Merchants prioritizing ease over optimization |
| Interchange-plus | Interchange is passed through and processor markup is shown separately | Better transparency into negotiable versus non-negotiable costs | Fees vary by card mix and channel | Merchants with enough volume to optimize |
| IC++ / full pass-through | Interchange, scheme fees, and markup are all broken out separately | Maximum transparency | Harder to read and forecast without strong reporting | Larger or more payment-mature merchants |
The logic behind this table comes from how Visa, Mastercard, and processor pricing docs separate interchange, pass-through fees, and provider markup. The practical takeaway is that “cheap” and “simple” are not always the same thing. Flat-rate plans may feel cheaper when volume is low and predictability matters, while interchange-plus or fuller pass-through models can become cheaper when volume grows, and the transaction mix is favorable.
A Simple Way To Audit Your Current Statement
If you want to know if you have the cheapest credit card processing available to you right now, ask yourself four questions:
- How much of your cost is from the network and how much is from the processor?
- How much of your volume is from debit cards, and are they being routed appropriately?
- How many fees are from refunds, failed, chargebacks, and international cards?
- How much of your fees are from the complexity of your website and security features?
These four questions will help you identify the biggest opportunities for improvement in your credit card processing fees. Most merchants do not need a detailed audit to find improvements in their credit card processing fees. Simply asking the above questions will help you identify the biggest opportunities for improvement.
Common Mistakes Merchants Make
The most common mistake is focusing on the advertised rate for merchants while ignoring the total fees that will be applied to that merchant. The second most common mistake is assuming the interchange rate is the one that will be negotiated when speaking with payment processors. The third most common mistake is to ignore the options for routing debit cards, qualifying for those debit cards, and ignoring the fees associated with those routing and qualification processes.
Another common mistake is separating payment processing fees from compliance and chargeback fees. Many merchants may assume that a lower rate will result in a lower total payment cost, but if those lower rates increase the merchant’s compliance or chargeback fees, the total cost may be the same or even higher than with a higher rate.
How To Actually Lower Your Merchant Fees
Negotiate The Markup, Not The Network Fees
While both Visa and Mastercard make clear that their published interchange structures are established by themselves and represent only one component of the total merchant discount rate, the markup that is applied to merchants by their processors or acquirers can usually be negotiated directly. If your fees are based upon an interchange-plus or pass-through model, you have an easier time negotiating these fees.
Reduce Card-Not-Present And Keyed Cost Where Possible
Mastercard makes clear in its documentation that its interchange qualification depends upon factors like the merchant category, time between authorization and clearing, card type, and transaction data. In practice, this often means that merchants that have a higher proportion of keyed or remote transactions often pay a higher rate for their transactions. If you can increase the proportion of transactions that can be processed by a system that does not require manual entry, your cost will likely decrease.
Route Eligible Debit Intelligently
For merchants that process U.S. debit transactions, routing can matter. According to the Federal Reserve in Regulation II, a network cannot inhibit a merchant from routing their debit transactions to any network that they enable. Furthermore, the maximum interchange fee for eligible debit transactions is $0.21 plus 0.05% of the transaction amount, plus an additional $00.01 adjustment for fraud prevention if the transaction is eligible. Routing eligible debit transactions properly can help merchants to reduce their fees.
Clear Faster And Submit Better Data
As with routing of debit transactions, Mastercard makes clear in their documentation that qualification of transactions for interchange rates depends upon factors like the time between authorization and clearing of the transaction, and the data that is submitted with that transaction. By ensuring that transactions are processed in a way that maximizes qualification for those rates, merchants can reduce their costs.
Cut Non-Transaction Fees Before They Compound
While transaction fees are obvious fees that merchants pay, most payment processors also have fees for transactions that are not completed successfully. Many merchants pay for transactions that are authorized but not processed, that fail during processing, that are refunded, that occur internationally, and that result in chargebacks. Reducing these fees is part of the effort to effectively lower the total cost of a merchant’s payments.
Reduce PCI Scope And Dispute Overhead
According to the PCI Security Standards Council, any merchant that completes any transactions is covered by the PCI DSS. Furthermore, while there are exceptions for certain security solutions, in general, merchants will have to pay for any PCI security solutions that are installed and managed by themselves. While the cost of payment processing may be low for a merchant, if they also have to pay for PCI security, their total costs may be high. Furthermore, disputes can lead to an increase in fees for merchants. Reducing the number of disputes that a merchant has will lead to a reduction of their total fees for payments, as well.
FAQs
Q: What is the cheapest credit card processing option for merchants?
A: There is no single cheapest option that will work for all merchants when considering the different costs of Visa and Mastercard and their various processing companies. Some merchants will find that flat-rate pricing is the most cost-effective for them, while others will find that interchange-plus or processor markup pass-through pricing is more beneficial.
Q: What is the difference between the cheapest payment processing and the cheapest merchant services companies?
A: Both of these companies usually offer merchants the same best pricing options. However, payment processing usually refers only to the rate at which merchants must pay for accepted payments, while merchant services may include various fees and products for merchants. Each of these should be compared to ensure the best deal is purchased.
Q: Can merchants negotiate the interchange fees for credit cards?
A: No, usually not. Both Visa and Mastercard set the interchange fees for credit and debit cards. Mastercard, for instance, makes it clear in its documents that the interchange fee is one component of the overall merchant discount rate that acquiring companies charge merchants.
Q: Why are debit card transactions sometimes cheaper than credit card transactions?
A: Debit transactions that are covered by Regulation II tend to have much cheaper interchange fees. Additionally, merchants and finance companies that provide these debit services have the right to route debit cards through at least two unaffiliated networks.
Q: Does PCI compliance for merchants affect the cost of credit card processing?
A: Yes, though it is not always directly reflected in the percentage of the merchant’s payments that will go to the credit card companies. The PCI Security Council says that all merchants that need to store, process, or transmit data from credit and debit cards are subject to PCI DSS, and that the scope of this requirement can significantly impact a merchant’s costs.
Q: When does interchange-plus pricing make more sense than flat-rate pricing for credit and debit card companies?
A: Interchange-plus pricing usually makes the most sense for merchants who have high transaction volumes, use a significant number of debit transactions, or have a good understanding of their required monthly statements. Processor companies make it clear in their documentation that interchange-plus and “fuller” pass-through pricing models make it easier for merchants to see the variable costs of each transaction.
Conclusion
The real answer to the question of what is the cheapest credit card processing is not to look for the lowest quote. Instead, merchants should separate the costs they cannot control from those they can. Many of the costs that exist with credit card processing software are unavoidable, but not all of them are permanent. When it comes to credit card processing costs, there is always room for improvement.
If you want help finding where your fees are actually coming from, Payment Nerds can help you break down your processing stack, compare pricing structures, and spot the cost drivers that matter most for your business. The cheapest setup is the one that lowers the real merchant cost without worsening the rest of your payment operation.
Sources
- Visa. “Credit Card Processing Fees & Interchange Rates.” Accessed March 2026.
- Mastercard. “Mastercard Interchange Rates and Fees.” Accessed March 2026.
- Federal Reserve. “Regulation II (Debit Card Interchange Fees and Routing).” Accessed March 2026.
- PCI Security Standards Council. “Merchant Resources.” Accessed March 2026.
- Braintree. “Pricing and Fees.” Accessed March 2026.
