Braintree

Assuming you’re in the U.S. and asking for business payment processing, my practical shortlist is:

Best payment processors people actually use

My direct recommendations

• If you sell mostly online: choose Stripe.
• If you sell mostly in person: choose Square.
• If you run a Shopify store: use Shopify Payments first unless you have a specific reason not to.
• If you need PayPal/Venmo checkout: use PayPal or Braintree alongside your main card processor.
• If you process $40k+/month or have larger tickets: compare Helcim against Stripe/Square; interchange-plus can be cheaper.
• If you’re enterprise/global: look at Adyen and Stripe.
• If you already have a merchant account and only need a gateway: use Authorize.net.

Usage-tracking sources disagree on exact rankings because they measure different parts of the web, but they consistently show PayPal, Stripe, and Square among heavily used payment technologies. Wappalyzer’s 2026 payment-processor tracker lists PayPal and Stripe as the top two by website count, while StackScan lists Stripe, PayPal, and Square among the most adopted payment-processing technologies it tracks. (wappalyzer.com)

If you want the safest “default” stack

For most small businesses, I’d do this:

1. Stripe for online card payments.
2. PayPal Checkout as an extra wallet option.
3. Square if you need POS/in-person.
4. Helcim once volume is high enough that pricing optimization matters.

The biggest mistake is choosing only by the headline rate. Compare effective rate after all fees, including monthly fees, hardware, chargebacks, refunds, international cards, currency conversion, ACH, subscription tools, PCI fees, and whether they hold reserves.

There’s no single “best” payment processor—it depends on your business type, volume, location, and sales channels. Here are the most widely used and highly rated processors right now, broken down by use case.

Best Overall / Online-First

Stripe

• The developer-friendly default for SaaS, ecommerce, and platforms.
• Handles subscriptions, one-click checkout, fraud tools, and global payouts.
• Transparent pay-as-you-go pricing: ~2.9% + 30¢ per domestic card transaction (varies by country/card).
• Used by millions of businesses, from startups to public companies.

Adyen

• The hidden powerhouse behind many large brands (e.g., Spotify, eBay, Uber).
• Best for high-volume, international businesses that want a single platform for online, in-app, and in-store payments.
• Pricing is customized per business—you pay per transaction plus monthly fees.
• Excellent for enterprise scalability and local acquiring in multiple countries.

Best for Small Businesses & Startups

Square

• Easiest setup; great if you also sell in person.
• Flat-rate pricing: 2.6% + 10¢ for in-person, 2.9% + 30¢ for online (standard).
• Offers free POS software, hardware options, and built-in inventory/invoicing.
• Best for retail, pop-ups, restaurants, and freelancers.

PayPal

• Still the most recognizable consumer brand; trust matters during checkout.
• Quick to set up, works with many ecommerce platforms, and handles invoicing easily.
• Fees are slightly higher (~3.49% + 49¢ for standard online payments, plus currency conversion fees).
• Good if you want a low-friction payment button and buyer protection reputation.

Shopify Payments

• Best if you run a Shopify store—zero transaction fees on Shopify’s platform when you use it.
• Integrates deeply with Shopify’s POS, subscriptions, and analytics.
• No separate gateway needed; supports many local payment methods.
• Not a standalone processor—you must have a Shopify subscription.

Best for B2B / Invoicing / High-Risk

Braintree

• Owned by PayPal, so you get PayPal + major cards in one integration.
• Offers robust recurring billing and merchant of record options for platforms.
• Great for B2B, marketplaces, and companies that want a unified API.
• Pricing is similar to Stripe (~2.59% + 49¢), with volume discounts available.

Stripe again (for B2B)

• If you need invoicing, payment links, and custom manual billing, Stripe’s Invoicing and Billing tools are excellent.

For high-risk businesses (CBD, gaming, adult, some subscriptions):

• Look at dedicated processors like Easy Pay Direct, PaymentCloud, or Nuvei. They specialize in high-risk onboarding but charge higher fees and require underwriting.

Best for Restaurants & Retail (In-Person)

Toast

• The industry standard for restaurants: POS hardware, kitchen display, online ordering, and payments in one system.
• Pricing is customized; hardware/software subscriptions plus lower processing rates.

Clover

• Very common for SMB retail and restaurants.
• Flexible hardware (countertop, mobile, kiosk) and app marketplace.
• Fees depend on provider; watch out for contract lock-ins with resellers.

SumUp (popular in Europe)

• Low-cost card readers for micro-businesses, with simple flat rates (e.g., 2.5% for most cards).
• Good lightweight alternative to Square outside the US.

Key Factors to Compare

• Total cost – not just the headline rate, but monthly fees, gateway fees, chargeback fees, and cross-border/currency conversion costs.
• Payout speed – Stripe normally pays out next business day; Square can be next-day or instant for a fee; some processors hold funds.
• Supported payment methods – credit/debit, digital wallets, bank transfers, local methods (PayPal, Klarna, iDEAL, SEPA, Alipay).
• Integration – does it work with your ecommerce platform (Shopify, WooCommerce, BigCommerce) or custom code?
• Scalability – can it handle overseas expansion, high-volume spikes, and recurring revenue?

Quick Verdict

• No-code / in-person small biz: Square or Clover
• Online store / subscription / custom API: Stripe
• Enterprise / global volume: Adyen
• Shopify store: Shopify Payments
• Need PayPal integration and B2B invoicing: Braintree
• Restaurant: Toast

For most new online businesses, Stripe is the safest all-around recommendation—it’s reliable, well-documented, scales with you, and integrates with almost everything. But if you’re selling in person today, Square wins on ease and speed to start.

The best payment processors depend entirely on how you sell, but Stripe, Square, and PayPal are the undisputed industry leaders that people and businesses actually use.

Choosing the right processor means balancing how your customers buy from you against the underlying fee structures.

🔎 Market Leaders at a Glance

💡 Top Recommended Brands & Products

Stripe: The gold standard for digital businesses and developers. It is incredibly flexible, allowing you to build heavily customized checkouts, manage global marketplaces, and accept international currencies seamlessly. Standout Feature: Massive API library and seamless integrations with almost any e-commerce plugin. Square: If you have a physical location or sell both in-person and online, Square is the most cohesive ecosystem. It provides free, intuitive point-of-sale (POS) software alongside incredibly sleek hardware options. Standout Feature: Zero monthly fees for the basic tier and an instant POS setup. PayPal & Braintree: PayPal remains a necessary checkout button for online stores because it reduces cart abandonment by letting shoppers buy using pre-saved info or Venmo. For larger apps, their subsidiary Braintree allows you to process backend white-label card transactions. Standout Feature: Instant, world-renowned consumer brand trust. Helcim: Instead of charging a flat fee, Helcim passes the raw wholesale cost of the credit card transaction directly to you with a tiny transparent markup (Interchange-Plus pricing). Standout Feature: Built-in volume discounts that automatically lower your rates as your business handles more revenue.

🗒 From the Business Community

Entrepreneurs emphasize that while flat-rate options are easy to launch, total volume should dictate your eventual shift to custom setups.

To recommend the absolute best match for your project, tell me:

What industry are you in, or what product/service do you sell? Will you be collecting payments primarily online, in-person, or a mix of both? Approximately what monthly sales volume do you expect to process?