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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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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.
Visit FinixDetailed Comparison
Side-by-side feature breakdown
$99+/month + interchange
Interchange+ pricing
2 Available
8 Available
9 Supported
9 Supported
Common Ground
Shared Regions
Shared Features
When to Choose Stax
Choose Stax if you need features like Low Fees. With fees of $99+/month + interchange, it's ideal for businesses focused on high-volume businesses.
When to Choose Finix
Choose Finix if you need features like Instant Payments or Instant Sandbox, or you want a broader feature set. With fees of Interchange+ pricing, it's ideal for businesses focused on platforms & direct acquirer.
Frequently Asked Questions
What is the difference between Stax and Finix?
Stax is best for high-volume businesses, while Finix is best for platforms & direct acquirer. Stax charges $99+/month + interchange and Finix charges Interchange+ pricing. They differ in supported features, regions, and payment methods.
Which is cheaper, Stax or Finix?
Stax charges $99+/month + interchange while Finix charges Interchange+ pricing. The best value depends on your transaction volume, business type, and required features. Compare their full fee structures for your specific use case.
Can I use both Stax and Finix together?
Yes, many businesses use multiple payment providers for redundancy, regional coverage, or to offer more payment methods. Stax and Finix can complement each other depending on your needs.