Payment Processor Reviews
Head-to-head reviews of Stripe, Square, PayPal, Adyen, and more.
Payment Processor Reviews: Find Your Perfect Match
We test payment processors with real transactions, real integrations, and real support interactions. Our reviews go beyond feature lists to measure what actually matters: true cost of processing, integration difficulty, support responsiveness, and fund hold frequency.
How We Test
- Process real transactions across card types
- Time the onboarding and integration process
- Calculate total cost including all hidden fees
- Test customer support response times and quality
Articles
Credit Card Processing Fees Explained: Complete 2026 Guide
FTC Disclosure: This article contains affiliate links to payment processors and merchant services. We may earn a commission when you sign up through our links, at no additional cost to you. Our recommendations are based
How to Choose a Payment Processor: Complete Guide for 2026
FTC Disclosure: This article contains affiliate links. We may earn a commission when you sign up for payment processing services through our links, at no additional cost to you. Our recommendations are based on independe
Best Restaurant POS Systems 2026: Toast vs Square Comparison
FTC Disclosure: This article contains affiliate links. When you choose a POS system through our links, we may earn a commission at no extra cost to you. Our recommendations are based on extensive testing and research. C
Stripe vs Square vs PayPal: Complete Payment Processor Comparison 2026
FTC Disclosure: This article contains affiliate links. We may earn a commission when you sign up for services through our links, at no additional cost to you. Our recommendations are based on extensive research and real-
Best Payment Processors for Small Business 2026: Complete Guide
FTC Disclosure: This article contains affiliate links. We may earn a commission when you sign up through our links, at no extra cost to you. Our recommendations are based on independent research and testing. How Do You
Common Questions
What is the difference between a payment processor and a payment gateway?
A payment gateway is the software that securely captures and encrypts card data at checkout (like Stripe or Braintree). A payment processor handles the actual movement of funds between the customer's bank and your merchant account (like First Data or TSYS). Many modern providers like Stripe and Square combine both into a single service.
Should I choose interchange-plus or flat-rate pricing?
Flat-rate pricing (like Square's 2.6% + 10¢) is simpler but often more expensive for businesses processing over $10K/month. Interchange-plus pricing passes through the actual card network fees plus a fixed markup — typically saving 0.3-0.5% on each transaction. Switch to interchange-plus once you're consistently processing $10K+ monthly.
How can I reduce my payment processing fees?
Key strategies: negotiate rates after reaching $50K+/month in volume, encourage debit card and ACH payments (lower interchange), implement address verification to qualify for lower rates, avoid keyed-in transactions when possible, and review your monthly statement for hidden fees like PCI non-compliance charges or batch processing fees.
How do Stripe, Square, and PayPal compare for small businesses?
Stripe excels for online-first businesses with developer resources — its API is best-in-class. Square is ideal for retail/in-person sales with its free POS hardware and simple setup. PayPal offers the widest buyer recognition but charges higher fees (3.49% + 49¢ for standard checkout). Choose based on where most of your sales happen.
Key Terms
Interchange Fee
The fee charged by the card-issuing bank on each transaction, set by card networks (Visa, Mastercard). Typically 1.5-3.5% for credit cards, 0.5-1% for debit. The largest component of processing costs. Rates vary by card type, merchant category, and transaction method (card-present vs. online).
Merchant Discount Rate (MDR)
The total percentage fee a merchant pays per transaction, combining interchange, assessment fees, and processor markup. Flat-rate processors (Square: 2.6%) simplify this into one number. Interchange-plus pricing breaks it into components for transparency. Ranges from 1.5% to 3.5%.
Payment Facilitator (PayFac)
A company that aggregates merchants under its own master merchant account, simplifying onboarding. Stripe, Square, and PayPal are PayFacs. Merchants sign up in minutes (vs. weeks for traditional accounts). Trade-off: slightly higher fees and risk of account holds for unusual activity.
Settlement
The process of transferring funds from the payment processor to the merchant's bank account. Standard settlement: 1-2 business days for card transactions. Same-day or instant settlement is available from some processors for an additional fee (typically 1-1.5%). ACH settlement takes 3-5 business days.