Stripe vs Square: Payment System Comparison for Business
ServDigest Team
Stripe and Square are the two biggest names in payment processing. Both were founded in the late 2000s, both became public companies with multi-billion-dollar market caps. But they have fundamentally different philosophies: Stripe is for developers and online business, Square is for retail and offline.
Philosophy and Positioning
Stripe is a platform for the internet economy. Created by developers for developers: clean API, excellent documentation, full programmability. If your business is a website or an app, Stripe gives you maximum flexibility in how the payment process looks and works.
Square is an ecosystem for real-world business. It grew from a card reader for iPhone and is still strong in offline: terminals, registers, receipts, inventory management. Online payments in Square came later as a complement to the offline core.
Payment Processing
Stripe:
- Fully programmable checkout via API
- Stripe Elements — embeddable UI components
- Stripe Checkout — ready-made payment page
- Payment Links without a website
- Subscriptions and recurring billing built in
- 135+ currencies and 40+ payment methods
Square:
- POS terminals for in-person card acceptance
- Square Online — simple online store builder
- Payment links and invoices
- Integration with offline receipts and inventory
- Fewer payment methods than Stripe
- Weaker, less flexible API
Fees
| Payment Type | Stripe | Square |
|---|---|---|
| Online (cards) | 2.9% + $0.30 | 2.9% + $0.30 |
| In-person (cards) | 2.7% + $0.05 | 2.6% + $0.10 |
| International | +1.5% | unavailable |
| ACH/bank transfers | 0.8% (max $5) | none |
| Invoices | 2.9% + $0.30 | 3.3% + $0.30 |
Stripe wins on international payments and bank transfers. Square is slightly cheaper on in-person transactions. For online stores, the difference is minimal.
API and Integrations
Stripe: the gold standard for fintech APIs. Clean documentation, SDKs for all popular languages, open libraries, huge community. Any developer can integrate Stripe in a day.
Square: functional API, but less elegant. SDKs available for major languages, documentation is satisfactory. Requires more effort for complex integrations.
If your product is software with a custom checkout, Stripe is irreplaceable. If you’re opening a coffee shop — Square.
Affiliate Programs
Stripe Partner Program: for platforms, marketplaces, and agencies. Commission on turnover from referred merchants. Strong track for SaaS platforms embedding Stripe.
Square Partners: for developers and agencies implementing Square for clients. Commission on referred accounts. Emphasis on offline business.
What to Choose
Stripe — best choice if:
- Your business is fully online
- You need custom payment integration
- You sell subscriptions (SaaS, memberships)
- You have international customers
- Your product is a platform or marketplace
Square — best choice if:
- You have a physical store, café, or restaurant
- You combine offline and online sales
- You need a ready-made POS solution
- An ecosystem matters (terminals + inventory + payroll)
Summary
Stripe and Square don’t so much compete as complement each other. Stripe — for digital-first business. Square — for brick-and-mortar. If you’re a SaaS startup — Stripe. If you’re opening a store — Square. Many companies eventually use both: Stripe for the website, Square for the retail location.