# Small Business Credit Card Processing Fees Explained (2026) > A 2026 guide to small business credit card processing fees: interchange, assessment, and markup explained, typical rates, and proven ways to lower what you pay per transaction. - **Author**: Aarthi Poonia - **Published**: 2026-07-03 - **Category**: Payments, Pricing - **URL**: https://dodopayments.com/blogs/credit-card-processing-fees-small-business --- Every card payment a small business accepts carries a fee, and most owners have no idea how that fee is actually built. If you searched **small business credit card processing fees**, **credit card processing fees**, or **how much are credit card processing fees**, the honest answer is that the headline rate hides three separate layers, and only one of them is negotiable. Understanding that structure is worth real money. For a small business doing $20,000 a month in card volume, shaving even half a percent off the effective rate is $1,200 a year back in your pocket. For broader context, see our [payment processing fees compared](https://dodopayments.com/blogs/payment-processing-fees-compared) breakdown and the explainer on [payment gateway vs payment processor](https://dodopayments.com/blogs/payment-gateway-vs-payment-processor). ## The three layers of every processing fee The total you pay on a card transaction is the sum of three components. | Component | Who sets it | Negotiable? | Typical share of the fee | | --- | --- | --- | --- | | Interchange | Card-issuing banks | No | The largest portion | | Assessment | Card networks (Visa, Mastercard) | No | A small fixed percentage | | Processor markup | Your payment processor | Yes | Varies widely by provider | ### Interchange [Interchange](https://dodopayments.com/glossary/interchange-fee) is the fee paid to the customer's issuing bank for every transaction. It is set by the card networks, varies by card type (rewards cards cost more), and is the same no matter which processor you use. You cannot negotiate interchange; it is a wholesale cost passed through to every merchant. ### Assessment Assessment fees go to the card networks themselves (Visa, Mastercard, and others). They are a small, fixed percentage of volume and, like interchange, are non-negotiable and identical across processors. ### Processor markup This is the only layer you control. Your processor adds a markup on top of interchange and assessment to make its margin. The difference between a cheap processor and an expensive one lives almost entirely here. This is why two businesses with identical card mix can pay very different effective rates. ## How processors package these fees Small businesses encounter three common pricing models: - Flat-rate pricing: one simple rate for all cards (for example, a fixed percentage plus a few cents). Easy to predict, but you overpay on low-interchange cards. - Interchange-plus pricing: you pay actual interchange plus a transparent fixed markup. Usually the cheapest for steady volume and the most transparent. - Tiered pricing: transactions are sorted into "qualified," "mid-qualified," and "non-qualified" buckets with different rates. Opaque and often the most expensive; avoid where possible. For digital and SaaS businesses, our guide on [how to accept online payments](https://dodopayments.com/blogs/how-to-accept-online-payments) and the [payment gateway integration guide](https://dodopayments.com/blogs/payment-gateway-integration-guide) cover which model fits online sales. ## What drives your effective rate up Several factors push your real, blended rate higher than the advertised number: - Card-not-present transactions (online, keyed-in, or phone) cost more than swiped or tapped cards because of higher fraud risk. - Rewards and corporate cards carry higher interchange than basic debit cards. - International cards add a cross-border surcharge, often around 1.5%. - Currency conversion adds another layer when you sell across borders. - Chargebacks add per-dispute fees on top of lost revenue, which is why [chargeback prevention](https://dodopayments.com/blogs/chargeback-prevention-saas) directly protects margin. ## A worked example Suppose a customer pays $100 with a rewards credit card online. Interchange might take a meaningful percentage, assessment a small fixed slice, and your processor's markup the rest. If that same customer paid in person with a basic debit card, your effective rate could be noticeably lower because both interchange and risk are lower. Multiply across a month and your card mix, not just your processor, shapes your bill. This is the same logic behind [smart payment routing](https://dodopayments.com/blogs/smart-payment-routing): steer transactions toward the lowest-cost rail your customer will accept. ## How to lower small business credit card processing fees You cannot touch interchange or assessment, but you can act on everything else: - Choose interchange-plus or transparent flat-rate pricing over opaque tiered plans. - Accept payments in person via swipe or tap where possible, since card-present rates are lower. - Avoid manually keying in cards, the most expensive entry method. - Encourage ACH or bank transfer for large B2B invoices to bypass card interchange entirely; see [accept ACH payments from customers](https://dodopayments.com/blogs/accept-ach-payments-from-customers). - Reduce chargebacks with clear billing descriptors and fraud screening, covered in [chargeback fraud prevention](https://dodopayments.com/blogs/chargeback-fraud-prevention). - Negotiate the markup once you have volume, since that is the only layer a processor controls. ## Where this matters most for digital and SaaS businesses If you sell digital products or software, processing fees are only part of your true cost. Tax compliance, currency handling, and failed-payment recovery all affect your margin. A [merchant of record](https://dodopayments.com/glossary/merchant-of-record-mor) like Dodo Payments bundles processing with tax compliance across 190+ countries, [adaptive currency](https://dodopayments.com/payments/adaptive-currency), and revenue recovery in one [transparent rate](https://dodopayments.com/pricing), so you are not separately paying a processor, a tax engine, and a dunning tool. Dodo Payments publishes its full rate card openly: 4% + 40c per domestic US transaction, +1.5% international, +0.5% on subscriptions, with tax, invoicing, and analytics included rather than billed as add-ons. For the developer view, the [API reference](https://docs.dodopayments.com/api-reference/introduction) and [integration guide](https://docs.dodopayments.com/developer-resources/integration-guide) show how it fits a modern stack. ## Passing the Fee to the Customer Is Regulated The obvious response to processing costs is to add them at checkout. That is surcharging, and it is a regulated activity rather than a pricing decision. Three layers must all permit it: local law, card network rules, and your provider agreement. Surcharging is prohibited on most consumer cards in the EU and UK, permitted with caps in the US, Australia, and Canada, and prohibited on debit and prepaid cards everywhere. Where it is allowed, it requires advance notification, disclosure before payment, and itemisation on the receipt. Our guide to [credit card surcharging](https://dodopayments.com/blogs/credit-card-surcharging) covers the rules and the arithmetic, which usually favours building the cost into your price. For where the fee actually goes, see [interchange fees explained](https://dodopayments.com/blogs/interchange-fees-explained). ## FAQ ### What is the average credit card processing fee for a small business? The blended effective rate most small businesses pay typically lands in the low-single-digit percentage range, made up of non-negotiable interchange and assessment plus a processor markup. Your actual rate depends on your card mix, whether payments are in person or online, and which pricing model your processor uses. ### Can I negotiate credit card processing fees? You cannot negotiate interchange or assessment fees, which are set by the issuing banks and card networks. You can negotiate the processor markup, especially once you have steady volume, and you can switch to a transparent interchange-plus model to stop overpaying on opaque tiered pricing. ### Why do online payments cost more than in-person payments? Online and keyed-in payments are card-not-present transactions, which carry higher fraud risk and higher interchange than swiped or tapped cards. Processors price the card-not-present tier higher to reflect that risk, so the same card can cost more online than at a physical point of sale. ### What is the cheapest way to accept card payments? For large B2B invoices, ACH bank transfer is usually cheapest because it avoids card interchange entirely. For card payments, in-person swiped or tapped transactions on an interchange-plus plan tend to be the lowest cost, while opaque tiered pricing and manual card entry are the most expensive. ### Do processing fees include chargeback costs? No, chargebacks are billed separately as a per-dispute fee on top of the original processing cost, and you also lose the disputed revenue. Reducing chargebacks through clear billing descriptors and fraud screening protects margin beyond what a low processing rate alone can deliver. --- - [More Payments articles](https://dodopayments.com/blogs/category/payments) - [All articles](https://dodopayments.com/blogs)