Credit Card Processing Fees
A typical processing fee is made up of three parts:
- Interchange: paid to the issuing bank; largest share of the cost and non-negotiable.
- Assessment (network) fees: charged by the card networks (Visa, Mastercard, Discover, AmEx); small percentage on every transaction and non-negotiable.
- Processor markup: the payment processor’s add-on (percentage and/or per-transaction); negotiable.
Across sources, merchants usually pay ~1.5%–3.5% (sometimes up to ~4%) of the transaction amount. Cost varies with card brand, card type (debit vs. credit; premium rewards vs. standard), transaction method (card-present vs. card-not-present), and merchant category (MCC).
Interchange-plus shows you actual network costs plus the processor’s markup, making it easier to audit and negotiate. Flat-rate can be simple but often bundles costs and may hide higher markups for some transaction types.
Use:
Effective rate (%) = (Total processing fees ÷ Total card volume) × 100.
Example: $2,500 in fees on $100,000 volume = 2.5% effective rate.
Track this monthly to spot creeping markups or avoidable downgrades.
Look for statement or administrative fees, PCI program fees that duplicate services, gateway subscription fees you don’t use, non-EMV penalties, and risk/program surcharges. Ask your provider to itemize and justify each charge; remove non-essential add-ons.
Surcharging credit cards is legal in most states, but debit card surcharges are prohibited nationwide. Several states ban or restrict credit card surcharges. Card brands also impose caps on the amount a merchant can surcharge. For example, Visa caps surcharging at 3% while Mastercard caps it at either 4% or the cost to accept Mastercard credit cards, whichever is lower. Lastly, you must provide advance notices and clear disclosures. Always verify state law and network rules before implementing.
For in-person transactions, Apple Pay and Google Pay are treated as card-present with no extra ‘wallet’ fee beyond your standard card-present rates. For e-commerce, they follow your card-not-present pricing. Neither wallet charges merchants directly; costs come from your existing processor terms.
Gateway fees: technology charges for the payment gateway (e.g., monthly access, per-request/authorization, refunds, tokenization). Processor (acquiring) fees: the financial transaction charges (percentage + per-transaction) for moving funds from customer to merchant. Many invoices bundle these—ask for separate line items so you can manage each cost.
A chargeback fee is a non-refundable administrative penalty your acquirer/processor charges each time a cardholder disputes a transaction—separate from the refund. Typical ranges are ~$15–$100 per case, and you pay it whether you win or lose. Chargeback prevention (clear billing descriptors, AVS/CVV checks, delivery proof, and responsive customer service) reduces total chargeback cost.
PCI DSS is a security standard required for any business that stores, processes, or transmits cardholder data. Providers may charge PCI program or portal fees for tools, scanning, or support. With PCI DSS 4.1 updates taking effect in 2025 (e.g., script integrity requirements), staying compliant avoids fines (often $5,000–$100,000/month) and account termination risks. Payment processors can also charge non-compliance fees to merchants that fail to meet PCI requirements.