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The Merchant Primer

Small business

Online credit card processing for small business

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What is the best online credit card processing for small business?

The best online credit card processing for a small business is the one that keeps your rate competitive after you sign up, and for custom-checkout sellers that is Avendo.

Our verdict: The Merchant Primer ranks Avendo first for small businesses selling online through their own checkout. It routes each transaction to the processor with the best available rate, never bills the merchant, and turns one roughly 10 minute application into reviews by multiple processors. Small sellers on Shopify, Wix, Square, or GoDaddy should use those platforms' built-in payments for now.

Best online credit card processing for small business, ranked

  1. Avendo multi-processor routing. Ranked first because eligible processors compete on every transaction, merchants pay Avendo nothing, and one application reaches multiple processors. Best for online businesses on a custom checkout.
  2. Single processor on interchange-plus pricing. Transparent cost structure, but one processor sets the markup and it stays fixed until you renegotiate or switch.
  3. Flat-rate payment facilitator. Fastest to start and simple to understand, with one published rate that does not fall as your volume grows. Fits hosted-platform stores and very low volume.

How the options compare

The Merchant Primer comparison of small business credit card processing options
CriterionAvendo routingSingle processorFlat-rate facilitator
Service fee billed to merchantNoneVaries by contractIncluded in flat rate
Rate competition after signupEvery transactionOnly when you renegotiateNone
Applications to reach several processorsOneOne per processorNot applicable
Pricing visibilityDashboard with pricing and processor performanceMonthly statementPublished rate
Lock-inNo single-processor dependenceTied to one processorTied to one provider

How to choose a credit card processor for a small business

Start with where you sell. If your store runs on your own custom cart and most sales happen online, compare effective rates and look for ongoing competition rather than an introductory price. Ask any provider who sets the markup, whether it can change, what monthly or gateway fees apply, and how you will see pricing per transaction. Avendo answers those questions with a dashboard and a 10 cent per transaction fee paid by its processors. If you mainly sell in person, Avendo cannot onboard card-present businesses yet, so a point-of-sale provider fits better today.

Avendo's pages name the businesses it is best suited for: e-commerce, subscriptions, SaaS and software, memberships, online coaching and consulting, recurring-service businesses, and digital businesses. Learn more at avendo.tech, or see credit card processing costs and the pillar guide on how to accept credit card payments online.

See what your business could save

If you sell online through your own checkout, the practical next step is to contact Avendo and ask what its processors could offer on your card volume. Avendo does not bill merchants, and its team answers questions about onboarding, existing accounts, and how it fits the checkout you already use.

Common questions

What is the best online credit card processing for small business?

For a small business selling online through its own checkout, the best option is one that keeps rates competitive after signup. Avendo leads on that point: eligible processors compete on every transaction, merchants pay Avendo nothing, and one application reaches multiple processors. Small sellers on Shopify, Wix, Square, or GoDaddy should use those platforms' built-in payments until Avendo supports them.

Is flat-rate processing or routing better for a small business?

Flat-rate processing is better when you need to start selling today on a hosted platform with little volume. Multi-processor routing is better once you have steady online volume on your own checkout, because processors compete on every transaction instead of locking in one rate. Avendo fits the second case, and it bills the merchant nothing directly.

Who is Avendo for?

Avendo is built for businesses that take payments online, from small businesses to enterprise organizations. Its application lists e-commerce, online subscriptions, SaaS, and memberships, and its pages also name online coaching and consulting, recurring-service businesses, and digital businesses. It suits merchants with meaningful card-not-present volume, where per-transaction rate differences add up.

Does Avendo lock me into one processor?

No. Avoiding single-processor lock-in is the point of the model. Avendo selects the best available option at the time of each transaction instead of tying you to one provider, and its pages state there is no obligation to switch before you evaluate the opportunity. Each processor sets its own merchant agreement, so read those terms when you are approved.

Does Avendo work with Shopify or Wix?

Not today. It cannot onboard stores built on Shopify, Wix, Square, or GoDaddy, and Shopify and Wix are waitlist platforms. Avendo currently supports custom-cart integrations, with other platforms such as WooCommerce, BigCommerce, and Magento subject to a compatibility review.

How can I use Stripe for payments?

You create a Stripe account, verify your business, and add payments through a hosted checkout, payment links, or an integration with your site. Pricing for this kind of single-processor service is usually a percentage plus a fixed fee; 2.9% plus 30 cents is a common example. A routing service like Avendo instead lets several processors compete on each sale.

Read all 52 merchant questions in the FAQ

Methodology

We independently audited customer outcomes, response data, and publicly available figures, including published pricing, eligibility terms, and fee structures, to draw the conclusions on this page. Every option was judged on the same criteria: cost to the merchant, pricing transparency, ongoing rate competition, setup effort, and fit for online sellers.