Compare Stax with top competitors like Square and Braintree, see full info on their rates, and read what customers have to say.

Updated on November 10th, 2023

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Updated 28th of March 2022

We updated the article to reflect the new company name, updated the pricing, and added two new comparisons to Stripe and Payment Depot.

Updated 19th of June 2020

We have added a news release to our news and activity section and updated our feature section regarding Fattmerchant's new Omni Connect product.

Updated 19th of February 2020

We have added the latest news release regarding Fattmerchant's Fintech 50 status award.

Stax by Fattmerchant is an all-in-one payment solutions provider to help businesses manage financials, process payments, and produce data analytics. The platform offers a comprehensive range of features, including multiple third-party integrations, cloud-based checkout terminals, and e-commerce integration.

Our Pick


Credit Card Processor, Merchant Services, and POS System

Sign Up Free

Used by more than 2 million businesses.

Robust reporting.

Custom invoices.





$99.00 + $0.08 /transaction & interchange.

Markup fee


Transparent rates and fees

Accepts all major payment methods

Offers a wide range of integrations

User-friendly interface

Access to funds

Same day.


Stax is an award-winning fintech platform that is affordably priced and offers a comprehensive payments ecosystem to help businesses streamline their payment workflows. Key features include integrated invoicing tools, advanced analytics and reports, 0% markup on transaction fees, and customization options through their API and mobile SDK.


  • Stax accepts a wide range of payment types, including swiped, keyed, mobile, and contactless transactions.
  • The platform offers 0% markup on transaction fees.
  • The platform features a number of third-party integrations, including QuickBooks Online, Mailchimp,
  • Users can create, manage, and track invoices through the invoicing dashboard.
  • The platform offers a personalized checkout experience with its cloud-based terminals.
  • The Stax dashboard features advanced analytics and reports.
  • Stax's RESTful API is compatible with all software languages and allows for advanced customization.
  • Users can build an e-commerce shopping cart or integrate Stax with their existing online store.
  • The company features iOS and Android mobile apps with software development kits (SDKs) for easy customization.
  • Stax offers 24/7 support and an online knowledge base.


  • Users pay a subscription fee for each terminal.
  • The platform has higher monthly fees than some competitors.


Stax is accredited by the Better Business Bureau and has an A+ rating. Users gave the platform a 4.0 rating on Trustpilot, with most users praising the customer service and comprehensive features. Some users complained about refund issues and hidden fees.

G2 featured only positive reviews and users gave the platform a 4.9 out of 5-star rating. On Software Advice, users cited the pricing and ease of use as highlights. The platform also features a number of customer reviews on its website and has received multiple awards for its services.



Monthly Pricing

Small Business: Processing up to $250,000 /yr.


Small Business: Processing $250,000-$500,000 /yr.


Small Business: Processing over $500,000 /yr.

Contact for quote.

Large Business

Contact for quote.

SaaS Platforms

Contact for quote.

Industry specifics:

Stax is well-suited to the following industries:

  • Healthcare and wellness.
  • Professional services.
  • Field services.
  • Retail and e-commerce.
  • Food and beverage.
Stax vs. Square
Stax vs. Square Payments:

Stax uses a subscription-based pricing structure and does not charge a merchant markup on the interchange. However, users will be required to pay a subscription for each payment platform they use. In contrast, users pay per transaction with Square Payments. Both platforms are PCI-compliant and have next-business-day transfers.

Stax vs. Square Payments Comparison:



Square Payments


$99.00 + $0.08 /transaction & interchange.

From 2.6% + $0.10 /transaction.

Access to funds

Same day.

Next business day.

Stax vs. Stripe
Stax vs. Stripe:

Stripe and Stax both offer in-person and online payment processing. However, Stripe is more popular as an online payment service, while Stax is a good solution for both types of payment types, making it the more versatile option. Stax offers a monthly subscription pricing plan, whereas Stripe charges per transaction.

Stax vs. Stripe Comparison:





$99.00 + $0.08 /transaction & interchange.

2.9% + $0.30 /transaction.

Access to funds

Same day.

Same day.

Stax vs. Payment Depot
Stax vs Payment Depot:

Payment Depot is a payment processing platform created by Stax. As a result, the two platforms offer comparable features for in-person and online payments. The primary difference between the two platforms is that Payment Depot caters to transactions up to $250,000, while Stax has plans for companies of all sizes.

Stax vs. Payment Depot Comparison:



Payment Depot


$99.00 /mo. + $0.08 /transaction & interchange.

From $79.00 /mo.

Access to funds

Same day.

24 - 48 hours.

QuickBooks Online:

Stax offers two-way integration with QuickBooks Online for easy data access to customer information, unpaid invoices, payments, and catalog items. This integration is simple to set up and your data will sync automatically throughout the day.




Card present payments

Accepts credit card swipes, taps, and dips as well as contactless payments.

Mobile payments

Accepts payments through Apple and Android devices.

Online invoicing

Accepts payments online or over the phone.

Business analytics

Business insights and data.


Connects to shopping carts and checkout pages.

Developer API

Integrates with various products and apps.


Stax's main integration is with QuickBooks Online. However, they state that they integrate with over 90% of third-party solutions, including POS, e-commerce, and accounting tools. You only need to tell the Stax team what tools you prefer using and they will set up the integrations.

Some compatible gateways and platforms include:

  • TSYS.
  • First Data Omaha, Nashville, North, and Rapid Connect.
  • Blackline.
  • SPin.
  • Network Merchants (NMI).

Popular POS integrations include:

  • Micros.
  • Revel.

Other integrations include:

Stax Terminals:

Stax has a line of Dejavoo terminals that can be used as standalone terminals, where users enter the payment amount and then swipe, dip, or tap a card. The Dejavoo terminals can also be integrated with the virtual terminal to complete a sale with lower interchange costs.

Additional Products:

Virtual Terminal:

Stax's virtual terminal is an online invoicing and recurring billing solution for online payments. Users can directly key in payments or send payment links to customers, manage customer information, track catalog and inventory items, and automatically send receipts and payment notifications.

Physical Terminals:

Stax programs card machines to suit individual needs. These machines accept credit, debit, EBT, and contactless payments, have EMV technology for security, and can integrate with your virtual terminal.

Mobile Payment Processing:

Stax offers a line of mobile swipers that integrate with countertop terminals and Android and iPhone payment apps. Stax's mobile iOS and Android apps feature:

  • Mobile swipers.
  • Card scanning.
  • Cash payment tracking.
  • Invoice tracking.
  • Inventory and catalog management.
  • Phone and tablet functionality.
  • Catalog grid view.
  • Barcode scanning.
  • Key-in functionality.
  • Analytics dashboard.

eCommerce Shopping Cart:

Stax's e-commerce shopping cart is PCI-compliant and offers a variety of other security features. Users can easily and quickly set up the shopping cart and checkout process and can customize it to match their brand and image. Stax's shopping cart integrates seamlessly with your online site and allows customers to complete the whole purchase process without having to leave your site.

Key Information:

Legal Name

Fattmerchant, Inc.


Suneera Madhani

Founding Date

Jan 01, 2014


618 E. South St., Ste. 510, Orlando, Florida 32801

Number of Employees


Number of Customers




1 (833) 782-9729



What is Stax?

Stax by Fattmerchant is an all-in-one payment solutions provider to help businesses manage financials, process payments, and produce data analytics. The platform offers a comprehensive range of features, including multiple third-party integrations, cloud-based checkout terminals, and e-commerce integration.

How does Fattmerchant make money?

Fattmerchant, Inc. makes money through their subscription-based payment processing platform, Stax.

Who is Suneera Madhani?

Suneera Madhani is the founder and CEO of Stax.

What is Fattmerchant?

Fattmerchant, Inc. is the parent company and former branding of Stax.

What does Stax cost?

Stax's pricing starts from $99.00 per month plus $0.08 per transaction and the interchange fee for businesses earning less than $500,000.00 per annum. The platform also offers subscription-based plans for larger enterprises, as well as SaaS platforms.

What is the difference between Stax or Square payment processing?

Stax is a fairly new company compared to Square. Square does not charge a monthly fee but its transaction fees start at 2.6% + $0.10 per transaction.

How do I get in touch with Stax customer service?

You can contact Stax support 24/7 by calling 1 (407) 982-1782 or referring to the customer support center.