Understanding Credit Card Fees: Complete Breakdown

Most Canadian business owners know they pay somewhere between 1.5% and 3.5% of every card transaction to their payment processor — but few understand where that money actually goes. Your merchant statement likely lists a dozen different line items, each with cryptic names and varying rates. This guide demystifies every fee category so you can make informed decisions about your payment processing costs.

The Three Layers of Card Processing Fees

Every credit card transaction fee can be broken into three distinct layers, each paid to a different party in the payment chain:

1. Interchange fees — paid to the cardholder's bank (issuer)
2. Assessment fees — paid to the card network (Visa, Mastercard)
3. Processor markup — paid to your acquirer or payment processor

Understanding this structure is the foundation for reducing your costs. The first two layers are largely non-negotiable (set by the networks), while the third layer — the processor's markup — is where you have room to negotiate or optimize by choosing the right pricing model.

1. Interchange Fees

Interchange fees represent the largest portion of your payment processing costs, typically making up 70–90% of total fees. They are paid by the acquirer to the issuing bank as compensation for the risk and cost of extending credit.

Interchange rates are set by Visa and Mastercard (not your processor) and vary significantly based on:

• Card type: Basic debit cards carry the lowest interchange (often under 0.10% in Canada after 2023 regulatory changes), while premium rewards cards carry the highest (often 1.5–2.5%).
• Transaction method: Card-present (chip + PIN) transactions qualify for lower rates than card-not-present (online/phone) transactions because they carry less fraud risk.
• Merchant category code (MCC): Certain industries like utilities, government, and non-profits qualify for special reduced interchange rates.
• Data quality: Submitting complete transaction data (Level 2 or Level 3 data for B2B transactions) can qualify for lower interchange categories.

2. Assessment / Network Fees

Assessment fees are charged by the card networks (Visa, Mastercard) for access to their payment infrastructure. They are much smaller than interchange fees but still contribute to your total processing cost.

American Express operates differently from Visa and Mastercard. Amex is both the card network and the issuer, so they charge a single, higher rate that covers both assessment and interchange functions. This rate can be 1.5–3.5% for merchants, which is why some businesses choose not to accept Amex.

3. Processor Markup

The processor markup is the fee your acquiring bank or payment processor charges for their services. Unlike interchange and assessment fees, this is the layer you can negotiate or shop around. The markup structure depends on your pricing model:

• Interchange-plus (IC+): The processor charges interchange + assessment + a fixed markup (e.g., interchange + 0.25% + $0.10 per transaction). This is the most transparent model.
• Flat-rate: A single percentage (e.g., 2.9% + $0.30) covers everything. Simple to understand but often expensive for high-volume merchants.
• Tiered pricing: Transactions are bucketed into "qualified," "mid-qualified," and "non-qualified" tiers. This model is notoriously opaque and often costly.

Read our detailed comparison of flat-rate vs interchange-plus pricing to understand which model is best for your business volume and card mix.

Monthly and Account Fees

Beyond per-transaction fees, many processors charge recurring fees:

• Monthly account/statement fee: A fixed fee ($5–$25/month) for account maintenance and statement generation.
• Gateway fee: If you use a payment gateway for online transactions, expect $10–$30/month plus per-transaction fees.
• Terminal rental fee: If leasing hardware rather than purchasing, rental fees range from $20–$80/month. Leasing is almost always more expensive long-term than buying a terminal outright.
• Minimum monthly fee: Some processors require a minimum processing volume or charge a fee if you fall below a processing threshold.

PCI Compliance Fees

Payment Card Industry (PCI) compliance is mandatory for all businesses that accept credit cards. Processors may charge:

• PCI compliance fee: $5–$30/month, supposedly covering the cost of compliance support and scanning tools.
• PCI non-compliance fee: $20–$100/month charged to merchants who have not completed their annual SAQ (Self-Assessment Questionnaire) or quarterly network scan. This is a penalty, not a service fee.

Completing your PCI SAQ is typically straightforward for small businesses that use hosted payment pages or terminals that never store card data. The non-compliance fee is entirely avoidable. TIB Finance provides guided PCI compliance support to help merchants avoid this unnecessary cost.

Chargeback Fees

A chargeback occurs when a cardholder disputes a transaction and the issuer reverses the payment. In addition to losing the sale amount, merchants typically pay:

• Chargeback fee: $15–$100 per dispute, charged regardless of whether you win or lose.
• Retrieval request fee: $5–$15 when an issuer requests documentation before escalating to a full chargeback.

If your chargeback rate exceeds 1% of transactions, card networks may classify you as a high-risk merchant and impose additional fees or terminate your account. Fraud prevention, clear billing descriptors, and excellent customer service are the best defences against chargebacks.

Other Fees to Watch For

Additional fees that sometimes appear on merchant statements include:

• Cross-border fee: 0.4–1.0% on transactions where the cardholder's bank is in a different country. Common for e-commerce businesses with international customers.
• Currency conversion fee: If you accept payments in foreign currencies, a conversion fee applies.
• Early termination fee: If you signed a multi-year contract, breaking it can cost $200–$500 or more.
• Batch fee: A small fee (often $0.05–$0.10) charged each time you settle your daily batch.
• Address Verification Service (AVS) fee: A per-transaction fee ($0.01–$0.05) for running AVS checks on card-not-present transactions.

How to Read Your Merchant Statement

Most merchant statements are designed to be confusing. Here is how to make sense of yours:

1. Find your effective rate: Divide total fees by total sales volume. If you processed $50,000 and paid $1,200 in fees, your effective rate is 2.4%.
2. Separate interchange from markup: Under IC+ pricing, these are listed separately. Under tiered pricing, they are blended — making it harder to identify your true cost.
3. Identify recurring monthly fees: List every fixed fee and determine whether each one is providing value.
4. Check for PCI non-compliance fees: These appear as a line item and indicate you have not completed your annual compliance questionnaire.

How Transparent Pricing Helps

The single most effective way to understand and control your processing costs is to choose a processor that offers transparent, interchange-plus pricing. With IC+ pricing from TIB Finance, your statement clearly shows what you paid in interchange (to the issuer) and what you paid to TIB Finance. There are no hidden markups buried inside blended rates, and you benefit automatically when you process lower-cost transaction types like debit or basic credit cards.

To take action on reducing your costs immediately, read our practical guide on how to reduce your credit card processing costs.