Every online business needs payment processing. Stripe, Square, and PayPal dominate the market with different strengths. Here is how to choose.
Quick Comparison
| Feature | Stripe | Square | PayPal |
|---|---|---|---|
| Online transaction fee | 2.9% + $0.30 | 2.9% + $0.30 | 3.49% + $0.49 |
| In-person fee | 2.7% + $0.05 | 2.6% + $0.10 | 2.29% + $0.09 |
| Monthly fee | $0 | $0 | $0-30 |
| Best for | Developers, custom integrations | Retail + online | Quick setup, buyer trust |
| API quality | Excellent | Good | Adequate |
| Setup time | Hours (developer needed) | Minutes | Minutes |
Stripe
Overview
Stripe is a developer-first payment platform. The API is exceptionally well-documented and flexible. It powers everything from one-time purchases to complex marketplace payment flows.
Strengths
- Best-in-class API: Clean REST API and SDK for every language. The documentation is a gold standard.
- Subscription billing: Stripe Billing handles recurring payments, trials, metered billing, usage-based pricing, and dunning.
- Marketplace payments: Stripe Connect splits payments between multiple parties (ideal for platforms and marketplaces).
- Revenue optimization: Adaptive Acceptance, smart retries, and network tokenization increase payment success rates by 10-15%.
- Global coverage: 135+ currencies, 47+ countries, local payment methods.
- Radar fraud detection: ML-based fraud detection included at no extra charge.
Weaknesses
- Requires development work to integrate (not plug-and-play)
- No free POS hardware
- Account holds and freezes without clear warning (common complaint)
Pricing
- Online: 2.9% + $0.30
- In-person (Terminal): 2.7% + $0.05
- International cards: +1.5%
- Currency conversion: +1%
- Invoicing: 0.4-0.5%
Best For
Custom e-commerce, SaaS businesses, marketplace platforms, subscription-based products, developers building payment flows.
Square
Overview
Square started as a POS system for physical retail and expanded to online payments. Strong for businesses that sell both in-person and online.
Strengths
- Unified commerce: Seamless connection between in-person and online sales. Inventory syncs automatically.
- POS ecosystem: Card readers, terminals, registers, kitchen display systems. Hardware is affordable and well-designed.
- Square Online: Free online store builder included. Basic but functional.
- Team management: Employee scheduling, time tracking, payroll integration.
- Financial services: Square Checking, savings, and business loans based on transaction history.
- Simple setup: Create an account, plug in the reader, start selling.
Weaknesses
- Less flexible API compared to Stripe
- Limited international support (fewer countries)
- Not ideal for complex subscription billing
- Platform holds funds more aggressively than competitors
Pricing
- In-person: 2.6% + $0.10
- Online: 2.9% + $0.30
- Invoices: 3.3% + $0.30
- Buy Now Pay Later (Afterpay): 6% + $0.30
- Square Online premium: $12-72/month
Best For
Retail businesses with both physical and online sales, restaurants, service businesses, simple online stores.
PayPal
Overview
PayPal is the most recognized online payment brand. 430+ million active accounts. Buyer trust is their biggest asset.
Strengths
- Buyer trust: Customers trust PayPal. Adding PayPal as a payment option increases checkout conversion by 28% (PayPal's data).
- PayPal Checkout: Minimal development required. Add a button and it works.
- Venmo integration: Reach Venmo's 90M+ users directly at checkout.
- Buyer/seller protection: Dispute resolution for both parties.
- Name recognition: Especially strong for unknown or small brands where customers hesitate to enter card details.
- Pay Later: Built-in BNPL options.
Weaknesses
- Higher fees than competitors (3.49% + $0.49 standard)
- Poor developer experience compared to Stripe
- Account freezes and holds (notorious reputation)
- Customer support is frustrating
- Checkout redirects customers to PayPal's site (friction)
Pricing
- Standard online: 3.49% + $0.49
- Advanced card processing: 2.59% + $0.49
- PayPal Checkout (card): 2.99% + $0.49
- In-person (Zettle): 2.29% + $0.09
- International: +1.5%
- Chargebacks: $20 per dispute
Best For
Small businesses wanting quick setup, businesses selling to first-time customers who value PayPal trust, international sellers, businesses that benefit from BNPL.
Our Recommendation by Business Type
E-commerce with Custom Frontend
Use Stripe. Best API, best documentation, best DX. Stripe Elements and Payment Intents API handle complex payment flows elegantly. Add PayPal as a secondary option for buyer trust.
Retail with Online Store
Use Square. Unified inventory, POS hardware, and online selling in one platform. Add PayPal for online shoppers who prefer it.
SaaS / Subscriptions
Use Stripe. Stripe Billing handles recurring payments, trials, upgrades, downgrades, proration, and dunning with minimal custom code.
Marketplace / Multi-Vendor
Use Stripe Connect. Purpose-built for splitting payments between platform and vendors. Handles KYC, payouts, and tax reporting.
Quick Launch / MVP
Use PayPal or Square. Fastest setup, no development needed. Migrate to Stripe when you need more customization.
Integration Approach
For most custom e-commerce projects, we recommend:
- Primary: Stripe for card payments, Apple Pay, Google Pay
- Secondary: PayPal as an alternative payment method
- Optional: Affirm/Klarna for Buy Now Pay Later
This combination maximizes conversion by offering every customer their preferred payment method.
Contact us to discuss payment integration for your e-commerce project.