Merchant buying guide
Credit card processor comparison guide.
Choose the processor that fits how you sell, how your staff works and what your written proposal actually includes. This hub helps you build a shortlist before you compare detailed pricing.
Get my free savings reviewStart with your numbers. No obligation.
Payment USA publishes this commercial comparison. We link to each provider’s own sources and explain where another option may fit better. Published rates can change; your written agreement controls.
01 / Start with the job
Which processor fits your workflow?
A useful shortlist starts with the work the system must do. These are starting points, not universal winners; availability, underwriting and the final agreement still matter.
Swipe across the table to compare options.
| Your main job | Start with | What to verify | Detailed guide |
|---|---|---|---|
| Statement-based merchant proposal | Payment USA | Interchange-plus quote, cash discount or dual pricing terms, equipment and payment channels | Processing options |
| Integrated small-business POS | Square | Plan, hardware, payment channel, software features and migration work | Square alternatives |
| Published interchange-plus markup | Helcim | Volume tier, underlying card costs, channel and optional service charges | Payment USA vs. Helcim |
| Online checkout, APIs or subscriptions | Stripe | Products used, integration work, payment methods and custom-pricing eligibility | Stripe fees guide |
| Restaurant POS workflow | Toast | Ordering, tips, modifiers, kitchen routing, hardware and agreement terms | Restaurant guide |
| POS hardware and software package | Clover | Device, software plan, processor relationship, contract and cancellation terms | Clover pricing guide |
02 / Understand the fit
Compare the operating model before the headline rate.
A processor can be inexpensive on paper and still be the wrong choice if it creates software gaps, manual work or a costly migration.
Payment USA
Payment USA offers interchange-plus processing plus cash discount and dual pricing options. The right comparison begins with your statement, channels and equipment needs because pricing is provided as a business-specific proposal.
Square
Square publishes plan pricing and payment fees by plan and channel. Its ecosystem can cover POS, online selling and business software, so compare the chosen Square plan and the tools you would need to replace—not one in-person rate in isolation.
Helcim
Helcim publishes interchange-plus markup tiers for in-person and keyed or online payments. Those markups sit above applicable interchange and network costs, so they are not an all-in effective rate or a direct substitute for a personalized quote.
Stripe
Stripe belongs on a shortlist when APIs, online checkout, subscriptions or platform payments drive the decision. Stripe publishes standard product pricing and describes custom pricing, including interchange-plus options. Add the products and implementation work your setup requires.
Toast
Toast is built around restaurant operations. Use its current pricing page as the start of a proposal, then test the actual shift: menu changes, modifiers, tips, kitchen routing, online ordering, reports and support.
Clover
Clover combines POS hardware and software plans for different business types. Review Clover’s current packages, then confirm who provides the processing, what each device and app costs, and which agreement governs cancellation.
03 / Put it in writing
A proposal should answer more than “what is the rate?”
Give each provider the same facts and request the same deliverables. That turns a sales conversation into a comparison you can audit.
Give every provider the same inputs.
- Recent complete statements, monthly sales and transaction count.
- In-person, keyed, online, invoice and recurring-payment mix.
- Average ticket, card mix and seasonal volume changes.
- Required POS, accounting, ecommerce and reporting workflows.
Require one complete written answer.
- Pricing by channel, per-item charges and all recurring fees.
- Hardware ownership, replacement, warranty and financing terms.
- Software plan, integrations, support coverage and funding schedule.
- Contract length, renewal, cancellation and migration responsibilities.
Compare a normal month and an expensive month.
Use actual transaction counts instead of multiplying one advertised percentage by sales. Per-item fees can matter more at a small average ticket, while subscription and equipment costs can change the result for a larger operation. Include refunds, chargebacks and international cards when they are material to your business.
04 / Make switching earn its keep
Stay where you are if the change does not improve the whole business.
A new provider should solve a documented problem or produce a worthwhile benefit after setup, training and replacement costs.
Keeping your current provider can be sensible when its total cost is competitive, the software fits your staff, support meets your needs and a competing proposal does not justify the disruption. Ask your current provider for updated terms before assuming its first offer is final.
Pause a switch when required features remain untested, equipment compatibility is uncertain, customer data or recurring payments lack a migration plan, or cancellation terms are still unclear. Run a live workflow test and keep the existing service available until payments, refunds, receipts, reporting and deposits have been verified.
05 / Before you decide
Processor comparison questions, answered.
Which credit card processor is best for a small business?
Is interchange-plus always cheaper than flat-rate pricing?
Should I choose a processor or a POS system first?
What should I send for a processor comparison?
Check the details
Sources & methodology.
Provider facts were checked against the sources below on September 16, 2026. Examples identify their inputs and exclusions. A published rate, a hypothetical model and a personalized merchant quote are different things.
- Payment USA: credit card processing
- Payment USA: cash discount program
- Square: U.S. plans and pricing
- Helcim: interchange-plus pricing
- Stripe: U.S. pricing and products
- Toast: restaurant POS pricing
- Clover: POS plans and pricing
Spot something outdated? Email us and we’ll check it.
Keep comparing
Your next useful read.
Make the comparison yours
A better decision starts
with your statement.
Bring your current fees, payment mix and must-have features. We’ll review the numbers and explain the options—including when your current pricing is already competitive.