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Stax logo

Stax

High-volume businesses

A membership-based payment processor offering interchange-plus pricing with a flat monthly fee instead of percentage markups. Stax is designed for high-volume businesses that want to save on processing costs by paying wholesale rates. Includes card processing, ACH, invoicing, and business management tools.

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VS
Finix logo

Finix

Platforms & Direct Acquirer

A payment infrastructure platform built specifically for software platforms and marketplaces in the United States. Finix enables platforms to become their own payment facilitators with direct acquiring capabilities, offering white-label payment processing with advanced features like split transactions and merchant onboarding tools.

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Detailed Comparison

Side-by-side feature breakdown

Fees
Stax

$99+/month + interchange

Finix

Interchange+ pricing

Category
Staxtraditional
Finixtraditional
Available Regions
Stax
North America
Finix
North America
Key Features
Stax
✓
Low Fees
✓
Enterprise
✓
Recurring Payments
Finix
✓
Instant Payments
✓
Instant Sandbox
✓
Recurring Payments
✓
Startup Friendly
✓
Enterprise
SDKs & Libraries
Stax

2 Available

Finix

8 Available

Payment Methods
Stax

9 Supported

Finix

9 Supported

Common Ground

Shared Regions

North America

Shared Features

EnterpriseRecurring Payments

View Stax Details

See full features, payment methods, and more

View Finix Details

See full features, payment methods, and more