By Eric Kuvykin. Substantially revised October 17, 2026. The original publication date and URL are retained.
Make the proposals comparable
A useful processor comparison begins with the same business activity, not two different headline rates. Create a worksheet showing transaction count, sales value, channels, refunds and fixed account costs for a representative period. Give each provider the same inputs and ask it to identify assumptions.
Visa distinguishes interchange reimbursement from the merchant discount negotiated with a financial institution. Use that distinction to ask what the provider’s quoted price includes. A worksheet should separate underlying transaction costs, provider pricing and separately billed services without assuming every statement uses identical labels.
Classify each line by its trigger
Record whether a cost changes with volume, transaction count, a specific event or the passage of time. Add equipment, software and account minimums in their own rows. Mark an unexplained item as awaiting clarification instead of hiding it in a miscellaneous total.
Ask for a written explanation of conditional pricing. What changes if the sales mix differs, a service is added or volume falls? Keep the proposal version and the response together. A verbal assurance should not become an undocumented assumption inside a spreadsheet formula.
Use an ordinary exception in the test
Include a refund and a failed or repeated payment where those occur in the business. Have the provider explain how its proposal prices each event and which report shows the result. Do not extrapolate from an ideal month containing only successful sales.
For a New York retailer with counter and online activity, show both channels separately. The example concerns comparability rather than a state-specific processing rate. If a proposal also changes customer-facing prices, route those changes through a separate current legal and disclosure review.
Retain the decision record
Summarize the full modeled cost, unresolved questions and operating tradeoffs. A lower estimate may still require more reconciliation or create a migration commitment that the owner should understand. Keep those factors visible without pretending every inconvenience has an exact dollar value.
After implementation, compare the first complete statement with the worksheet. Investigate differences by fee category and actual sales mix. The decision becomes more useful when the business can explain both why it selected the provider and whether the expected costs appeared.
Sources and related guides
Primary resources checked for this review: Visa’s rates, fees and merchant rules resources. Confirm requirements and implementation for the actual arrangement with the responsible provider or appropriate adviser.
Continue with Interchange and Merchant Processing Costs: A Statement Review Guide and Small-Ticket Card Payments: Model the Fixed Cost Before Comparing Rates.
For state and local resources alongside this operating analysis, use the New York business operations guide on All State Merchants.
