Adyen vs Square: Payment Processors Comparison (2026)
Adyen has a transaction-based pricing model with no setup or monthly fees, supporting various payment methods and offering global coverage with transparent Interchange++ pricing. Square offers a free basic plan with no monthly fees, a POS app, online ordering, inventory tracking, and marketing tools. Adyen is suitable for businesses prioritizing global reach and transparent per-transaction costs, while Square caters to small businesses seeking an all-in-one platform with a free entry point.
AI Citation Scorecard
How often each is cited by major AI engines when buyers ask payment processors questions. Last 90 days across ChatGPT, Perplexity, Gemini, Claude, and Copilot.
Probes run hourly; each (engine × query) combo retests every ~3 days.
Pricing
Key Features
- ✓No setup fee or monthly fees
- ✓One integration for all payment methods
- ✓Flexible payouts in multiple currencies
- ✓Transparency in pricing with Interchange++
- ✓POS app for any payment
- ✓Build an online ordering profile
- ✓Track inventory and sales
- ✓Send estimates, contracts, and invoices
- ✓Schedule appointments
- ✓Access funds instantly
- ✓Create custom rewards program
- ✓Send unlimited email marketing campaigns
When to choose Adyen
Adyen is suitable for businesses that require global coverage, support for multiple payment methods, and transparent transaction-based pricing with an Interchange++ model. It is appropriate when the business prefers no setup or monthly fees and wants flexibility in payouts with multiple currencies.
When to choose Square
Square is suitable for small businesses looking for a free basic plan with features like a POS app, online ordering, inventory tracking, invoicing, appointment scheduling, and marketing tools. It is also appropriate when the business needs instant access to funds and integrates with platforms like Instagram, Facebook, Google Calendar, and OpenTable.