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Stripe has earned its place as a default choice for many businesses accepting payments online. The company built its reputation on clean documentation, reliable uptime, and a developer-friendly approach that made integrations feel less like dental work. But defaults become habits, and habits prevent businesses from asking a simple question: is this still the right fit?
The answer depends on what you need. A subscription box company processing $40,000 monthly has different concerns than a marketplace platform onboarding hundreds of sellers. A brick-and-mortar shop expanding into online sales needs different tools than a SaaS company billing in 30 currencies. Stripe handles all of these scenarios, but so do other processors, sometimes with pricing structures that leave more money in your account at month's end.
This list covers payment processors worth evaluating. Each serves a different type of business, and each offers something Stripe does not prioritize or price competitively.
PayPal: The Name Everyone Knows
PayPal serves more than 425 million active users worldwide. Roughly 35 million merchants accept PayPal payments, giving the platform unmatched consumer recognition. When a checkout page displays the PayPal button, many buyers feel comfortable completing their purchase because the brand carries familiarity.
Standard domestic transactions cost 2.9% plus $0.30. When customers pay through a website checkout without leaving the page, fees increase to 3.49% plus $0.49. Standalone card payments through PayPal accounts run 2.99% plus a fixed cost. The Zettle point-of-sale system charges 2.29% plus $0.09 for in-person sales.
International fees range from 3.4% to 4.4% plus a currency-dependent fixed fee. Micropayments, launching in 2026, will cost 5% plus $0.05 per transaction, aimed at businesses processing frequent small-value sales.
Opening a PayPal Business account costs nothing. The setup process takes minutes, requires no credit check, and carries no monthly or cancellation fees. This accessibility makes PayPal practical for new businesses testing their market before committing to more complex payment infrastructure.
Seller Protection helps businesses avoid chargebacks, reversals, and associated fees on eligible transactions. Customers can pay with cards, Apple Pay, Google Pay, and other methods. Established businesses processing large volumes can negotiate custom rates or interchange plus pricing.
Square: Hardware and Software in One Package
Square updated its pricing in October 2025 and again in February 2025. The company now offers three subscription tiers: Free at $0 monthly, Plus at $49, and Premium at $149. Each tier unlocks different processing rates and software features.
In-person payments on the Free plan cost 2.6% plus $0.15 per transaction. Online transactions run 3.3% plus $0.30. Plus subscribers receive the older online rate of 2.9% plus $0.30. Keyed-in transactions cost 3.5% plus $0.15 regardless of plan.
Invoice payments carry the same rates as online transactions, with an Invoices Plus option reducing fees. ACH bank transfers cost 1% with a $1 minimum, capped at $10 for Invoices Plus users. Bitcoin payments carry 0% processing fees until December 31, 2026, after which the rate becomes 1%.
Square Premium offers the lowest processing fees and suits businesses processing over $250,000 annually. These businesses can contact Square for custom pricing arrangements.
Every major card brand costs the same to process: Visa, Mastercard, American Express, and Discover. This simplifies accounting and eliminates the premium many processors charge for Amex transactions.
The Free tier works well for businesses that want hardware, software, and payment processing from a single provider without monthly commitments. You pay only when you accept a payment.
Finix: Built for Volume and Complexity
Finix operates on a subscription model that passes interchange fees directly to merchants with zero markup. The company charges a $250 monthly platform fee on its Starter Plan, designed for businesses processing under $1 million annually. Larger operations can negotiate custom arrangements based on volume, industry, and operational requirements.
The card-present rate starts at interchange plus $0.08 per transaction. Card-not-present transactions cost interchange plus $0.25. This structure rewards businesses with high transaction volumes, where the fixed monthly fee becomes negligible against the savings from transparent interchange pricing.
Finix supports industries that many processors avoid. Nutraceuticals, CBD, lending, and gambling operations can find underwriting solutions through the platform. The company built a configurable underwriting engine that combines automated identity verification with human oversight, allowing risk teams to set custom approval logic and compliance thresholds.
For platforms operating as payment facilitators, Finix provides a unified system covering payments, compliance, underwriting, and settlement. Businesses can start with PayFac-as-a-service and transition to full PayFac status when ready. The API handles billions of calls annually with 99.999% uptime, supported by multiple failover systems.
New accounts receive a free PAX payment terminal. Developers can build custom checkouts within a day using REST APIs, low-code hosted pages, and pre-built webhooks. The dashboard manages countertop, portable, and tap-to-pay devices from a single interface.
Adyen: Transparency at Enterprise Scale
Adyen uses interchange plus plus pricing, which tracks interchange rates and scheme fees at the transaction level. The company calculates the cost of each payment before completion, providing full visibility into where money goes.
United States payment methods carry a $0.12 processing fee plus a payment method fee. There are no monthly fees, setup fees, integration fees, or closure fees. The company does require a minimum invoice amount, which varies by industry and business model.
This pricing structure breaks down each transaction into its component parts: the interchange fee paid to the card-issuing bank, the acquirer fee paid to Adyen, and the card scheme fee paid to Visa or Mastercard. Flat-rate processors bundle these costs and add margin; Adyen shows each line item separately.
The platform supports payment methods across North America, Europe, Latin America, Asia-Pacific, the Middle East, and Africa. Clients include Spotify, Uber, and Etsy. Adyen for Platforms supports seller onboarding in 35 countries, including the United States, United Kingdom, Germany, and Australia.
Fraud detection tools use machine learning to analyze transactions in real time. The system identifies potential fraudulent activity and prevents losses before they occur.
Adyen may not suit low-volume merchants or brick-and-mortar operations. The minimum invoice amount creates a floor that small businesses might not reach, and the platform lacks features designed specifically for physical storefronts.
Braintree: PayPal's Developer-Focused Sibling
Braintree began as an independent company in 2007, acquired Venmo in 2012, and was purchased by PayPal in 2013. The platform now processes over $50 billion annually and handles more than one billion transactions per quarter.
Standard credit and debit card transactions cost 2.59% plus $0.49. ACH Direct Debit runs 0.75%. Venmo transactions cost 3.49% plus $0.49, reflecting the platform's consumer appeal and the premium businesses pay for that access.
There are no monthly fees, setup fees, or minimum transaction requirements. Businesses processing over $80,000 monthly can contact sales for custom flat rates or interchange plus pricing.
Additional fees apply in specific situations. Chargebacks cost $15 each. Non-USD currency transactions add 1%, with another 1% added if the card was issued outside the United States.
Braintree supports over 130 currencies and processes transactions in 45 countries. Payment methods include credit and debit cards, PayPal, Venmo in the United States, Apple Pay, and Google Pay. The platform integrates with major e-commerce systems and provides APIs for custom implementations.
The combination of PayPal and Venmo acceptance makes Braintree practical for businesses targeting consumers who prefer those payment methods. The technology-forward approach and global reach suit companies with international customer bases.
Authorize.net: A Gateway With History
Authorize.net offers three pricing plans. The All-in-One plan costs $25 monthly plus 2.9% plus $0.30 per credit card transaction. The Payment Gateway plan costs $25 monthly plus $0.10 per transaction plus a $0.10 daily batch fee. The Payment Gateway and eCheck plan costs $25 monthly plus 0.75% per eCheck transaction, $0.10 per transaction, and a $0.10 daily batch fee.
The platform has no contract fees and no early termination penalties. The pricing remains straightforward without hidden charges beyond the rates listed above.
Forbes awarded Authorize.net recognition for fraud protection in 2025. The platform provides tools for processing payments online, in-person, via mobile devices, or over the phone. Accepted methods include credit and debit cards, eChecks, and Apple Pay.
Visa launched Auth.net 2.0 at ETA TRANSACT in April 2025, updating the platform's capabilities. The gateway works well for businesses seeking a simple checkout and shopping cart setup. It handles core payment acceptance reliably but lacks the advanced features found in more modern platforms.
Authorize.net suits businesses that need straightforward gateway functionality without complex requirements. The monthly fee model works for operations with consistent transaction volumes, where the predictable cost structure simplifies budgeting.
Choosing the Right Processor
The best payment processor depends on your transaction patterns, customer preferences, and growth trajectory. Consider these factors when evaluating options:
· Transaction volume determines which pricing model saves money. High-volume businesses benefit from interchange plus or subscription models like Finix. Low-volume businesses may prefer flat rates with no monthly fees, such as PayPal or Square.
· Sales channels matter for businesses operating both online and in-person. Square provides integrated hardware and software. Adyen supports multi-channel operations at scale. Authorize.net handles various input methods through a single gateway.
· Customer preferences influence conversion rates. PayPal's brand recognition reassures buyers. Venmo appeals to younger consumers through Braintree. International customers may prefer local payment methods available through Adyen.
· Industry risk classification limits options for some businesses. Finix accepts high-risk merchants in regulated industries. Most flat-rate processors avoid these categories entirely.
· Technical requirements vary by business. Developer-heavy teams may prefer Braintree's APIs. Businesses without technical staff may favor Square's turnkey approach or PayPal's minimal setup process.
The processors listed here each serve specific needs well. Evaluate your current costs, project your growth, and test the platforms that fit your situation. Most offer free accounts or trial periods that allow real-world evaluation before full commitment.