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Key takeaways:
- Credit card fees combine interchange, network, and processor charges, with interchange usually the largest portion.
- Costs vary based on transaction type, risk level, industry, and whether payments are in-person or online.
- Pricing models differ in transparency and cost efficiency, with interchange-plus offering the most visibility.
Accepting card payments is now a basic expectation for most businesses. Whether customers are shopping online, paying in-store, or using mobile wallets, they expect transactions to be fast, secure, and convenient.
Behind every card payment, however, is a complex fee structure involving banks, card networks, processors, and payment providers. For merchants, these costs can be difficult to understand, particularly because processing fees comprise multiple moving parts rather than a single charge.
This guide explains the main types of credit card processing fees, why they vary, and how different pricing models work.
What are credit card processing fees?
Credit card processing fees are the costs businesses pay to accept card payments from customers.
These fees help cover the infrastructure, security systems, fraud prevention tools, and financial risk involved in processing transactions between the customer’s bank and the merchant’s account.
Although fees are often bundled together on merchant statements, they are usually made up of three main components:
- Interchange fees
- Scheme or network fees
- Processor or acquirer markup
Each party involved in the transaction takes a small portion of the payment amount.
Interchange fees
Interchange fees are typically the largest part of card processing costs.
These fees are paid by the merchant’s acquiring bank to the customer’s issuing bank whenever a card transaction takes place. The issuing bank receives the fee for authorising the transaction and taking on risks related to fraud and credit.
Why interchange fees vary
Interchange fees are not fixed across all transactions. They vary depending on factors such as:
- Card type
- Transaction method
- Industry
- Geography
- Fraud risk
- Whether the card is present or not
For example, ecommerce transactions often carry higher interchange fees than chip-and-PIN transactions because they present a greater fraud risk.
Premium rewards cards may also have higher interchange rates because issuing banks use interchange revenue to help fund loyalty and rewards programs.
International transactions can also attract higher interchange costs due to currency conversion requirements and the increased complexity of cross-border payments.
Card-present vs card-not-present transactions
One of the biggest factors affecting processing fees is whether the customer’s card is physically present during the transaction.
Card-present transactions include:
- Chip-and-PIN payments
- Contactless payments
Mobile wallet taps in-store
These transactions are generally considered lower risk because the physical card and the customer are present at the point of sale.
Card-not-present transactions include:
- Ecommerce payments
- Phone orders
Subscription billing
This is one reason why ecommerce businesses often face higher average payment costs than businesses operating primarily in physical retail environments.
Scheme or network fees
Card networks such as Visa and Mastercard also charge fees for using their payment infrastructure.
These are commonly called scheme fees or network fees.
These fees help support:
- Payment network infrastructure
- Security and fraud prevention systems
- Compliance programmes
- Transaction routing
- Innovation and network maintenance
Although scheme fees are generally smaller than interchange fees, they still contribute to the total cost of accepting card payments.
Processor and acquirer markup
Payment processors and acquiring banks also charge fees for facilitating transactions and managing merchant accounts.
These costs may include:
- Gateway fees
- Authorisation fees
- Monthly platform fees
- PCI compliance fees
- Terminal rental fees
- Chargeback fees
- Cross-border processing fees
Some providers bundle these costs into a single rate, while others itemise them.
The structure of these fees can vary significantly between providers, which is why comparing payment contracts carefully is important for merchants.
Common pricing models
Payment providers structure their fees in different ways. The right model often depends on the size and complexity of the business.
Flat-rate pricing
Flat-rate pricing charges the same percentage for every transaction.
For example:
- 2.5% per transaction
- 1.5% + 20p per transaction
This model is simple and predictable, which makes it popular with smaller businesses and startups.
However, flat-rate pricing can become expensive for larger merchants processing high transaction volumes, particularly if their actual interchange costs are lower than the bundled fee being charged.
Blended pricing
Blended pricing combines interchange fees, scheme fees, and processor markup into one bundled rate.
This simplifies billing and reconciliation but offers less visibility into the underlying costs of each transaction.
For businesses with more complex payment operations, this lack of transparency can make it harder to understand where costs are increasing.
Interchange-plus pricing
Interchange-plus pricing separates interchange and scheme fees from the processor’s markup.
For example:
- Interchange + 0.3% + 10p
This model provides greater transparency and is often preferred by larger merchants that want a clearer understanding of their payment costs.
Why processing fees vary between businesses
No two businesses have identical payment costs. Several factors influence how much a merchant pays in processing fees.
Industry type
Certain industries are considered higher risk than others.
For example:
- Hospitality
- Travel
- Subscription services
- Ecommerce
may face higher fees due to increased fraud or chargeback risk.
Transaction volume
Businesses processing large transaction volumes can often negotiate more competitive pricing with payment providers.
Smaller businesses, meanwhile, may prioritise simplicity and ease of setup over the lowest possible rates.
International payments
Cross-border transactions are often more expensive to process because they may involve:
- Currency conversion
- Additional fraud checks
- International card schemes
- Multiple financial institutions
Businesses serving international customers may also choose to support multicurrency payments or local payment methods, which can affect overall payment costs.
Chargebacks and fraud history
Businesses with high chargeback rates may face additional fees or risk monitoring requirements from payment providers.
Why understanding payment fees matters
For merchants, understanding processing fees is about more than simply reducing costs.
Payment performance can directly affect:
- Customer experience
- Conversion rates
- Operational efficiency
- International growth
- Revenue
For example, a smoother checkout experience with higher transaction approval rates may generate more revenue even if processing fees are slightly higher.
This is particularly important in ecommerce and hospitality environments, where friction during checkout can lead to abandoned purchases.
Similarly, businesses expanding internationally may decide that supporting local payment methods or multicurrency transactions is worth the additional processing complexity because it improves customer trust and conversion rates.
Final thoughts
Credit card processing fees consist of multiple layers involving issuing banks, card networks, acquiring banks, and payment processors.
While the fee structure can appear complex at first, understanding the basics helps businesses evaluate providers more effectively and make better decisions about their payment infrastructure.
As payment technologies continue to evolve, merchants that take a more strategic approach to payments will be better positioned to balance cost efficiency, security, and customer experience.
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