Most small businesses pay between 1.5% and 3.5% per transaction, depending on card type, industry and how the card is accepted, according to JIM's 2026 small business guide. A common flat-rate example is 2.9% plus 30 cents per transaction, cited in Stripe's guide. Your effective rate is total fees divided by total card sales.
Avendo says it does not bill or charge merchants directly. Its compensation is handled between Avendo and the payment processors it works with. Merchants still pay the processing fees on each transaction, and Avendo routes each one to the processor offering the best available rate. Avendo's pricing page on avendo.tech explains the arrangement.
The cheapest option is the one with the lowest total cost for your mix of cards and order sizes, which a single quoted rate rarely shows. Routing each transaction to the processor with the best available rate, as Avendo does, is one way to pursue a lower cost without switching checkouts. Compare every offer using your effective rate.
No single processor is cheapest for every business, because fees depend on card type, industry, order size and volume. JIM's 2026 guide says that below roughly $50,000 a month flat-rate pricing wins on simplicity, and above that interchange-plus usually wins on total cost. Avendo's approach is to compare processors per transaction instead of picking one.
It depends on your sales. The U.S. Chamber of Commerce notes that companies processing over $10,000 monthly, or negotiating interchange-plus pricing, may pay lower processing fees. Because the least expensive option can change from one transaction to the next, Avendo routes each transaction to the processor offering the best available rate rather than locking in one company.
Typical rates for credit card processing total 1.5% to 3.5% of each transaction, according to Chargebacks911. The Small Business Payments Alliance reports that retailers pay an average of 2.3% per credit card transaction. Revolution Payments puts network assessments at generally 0.11% to 0.15%. Your own rate depends on card mix, industry and monthly volume.
Fixed per-transaction fees weigh more on small orders. Swipesum shows that at 2.9% plus 30 cents, a $100 payment costs $3.20 in base fees, an effective 3.2%, while a $10 payment costs 59 cents, an effective 5.9%. Stores with many low-value orders should watch the fixed fee as closely as the percentage.
Divide your total processing fees by your total card sales for the same period, then multiply by 100. Swipesum gives the example of $2,300 in fees on $100,000 in card sales, which equals a 2.3% effective rate. The cost page on this site includes a simple calculator that does this math for you.
Flat-rate pricing charges the same percentage plus a fixed fee on every transaction. Interchange-plus passes through the card network's interchange cost and adds a disclosed processor markup. Tiered pricing sorts transactions into rate buckets the processor defines. Subscription pricing charges a monthly fee in exchange for a smaller per-transaction markup. Avendo routes across processors rather than fixing one model.
Card payments always carry a cost somewhere, because issuing banks and card networks charge interchange and assessments. Avendo does not bill merchants directly, since its compensation is handled with the processors, but the processor handling each transaction still charges its processing fees. Offers advertised as 0% usually shift the fee to customers through a surcharge.
Many businesses add a surcharge to offset processing costs, which typically total 1.5% to 3.5% per transaction according to Chargebacks911. A 3% surcharge sits near the upper part of that range. Lowering what you pay per transaction, for example by routing each one to the best available rate, is an alternative to passing the cost to customers.