Payment Processing

Online payment processing platforms for accepting credit cards, digital wallets, and alternative payment methods. Includes hosted checkout, APIs for custom integrations, and fraud prevention.

What to look for in payment processing tools

Payment processing is one of the highest-stakes tool decisions an online business makes — the wrong choice costs you in transaction fees, failed payments, and checkout abandonment. The core comparison is almost always Stripe versus PayPal, but the right answer depends on who your customers are and how technical your team is. Stripe wins on developer experience, API flexibility, and per-transaction cost for most use cases. PayPal wins on consumer trust and conversion lift — displaying the PayPal button at checkout increases completion rates by 8-15% in most A/B tests. The fee comparison requires careful math: Stripe's 2.9% + 30¢ versus PayPal's 3.49% + 49¢ for PayPal Checkout transactions translates to a meaningful annual difference on high volume. For businesses processing $50,000/month, that gap is roughly $3,500/year. Almost every serious online business runs both — Stripe as the primary processor with PayPal as an additional option — which adds integration work but captures both customer preferences. International businesses should also evaluate Adyen, which offers better rates and coverage in non-US markets. Negotiated rates typically become available at $250K+/month in volume.

Best payment processing tools by use case

Solo founders and early-stage startups

Stripe — zero setup cost, excellent documentation, and a hosted Checkout that looks professional without engineering work. Payment Links let you accept payments from a shareable URL in under 10 minutes. PayPal as a secondary option for customers who prefer the wallet.

Growing SMBs with significant transaction volume ($10K-$100K/month)

Both Stripe and PayPal. Stripe for card processing (lower fees, better developer tools, superior dispute management) and PayPal for the conversion lift from PayPal wallet customers. At this volume, the fee difference between Stripe and PayPal is worth optimizing — put card transactions through Stripe and PayPal wallet transactions through PayPal.

Platforms, marketplaces, and SaaS businesses

Stripe Connect for marketplace payouts and multi-party transactions — it's the only payment processor that handles complex split-payment, escrow, and platform billing scenarios cleanly. PayPal has marketplace products but Stripe Connect's API depth is unmatched.

Enterprise and high-volume merchants ($1M+/year)

Negotiate custom rates with Stripe (Stripe Plus) and/or Adyen. Most enterprise merchants run multiple processors for redundancy and to leverage competitive rates. Braintree (PayPal's developer platform) is worth evaluating as a Stripe alternative with PayPal's consumer trust baked in.

Common mistakes when choosing payment processing tools

×Not accounting for the full fee structure. The advertised rate is just the start — international card fees (1.5% Stripe, higher for PayPal), currency conversion, dispute fees, and premium card surcharges add up. Run your actual historical transaction mix through each processor's fee calculator before choosing.
×Ignoring checkout conversion rates. A 1% improvement in checkout conversion is often worth more than a 0.5% reduction in processing fees. Test PayPal and Apple Pay buttons alongside your standard card form — the conversion data often overrides the fee math.
×Building on a single processor without a backup plan. Payment processor outages happen. Having Stripe as primary with PayPal as fallback means a Stripe incident doesn't take your entire revenue offline.
×Not setting up dispute management early. Chargebacks are inevitable for online merchants. Set up proactive dispute documentation (order details, IP addresses, fulfillment records) in your payment processor's dispute dashboard before your first chargeback arrives.