Updated October 16, 2023

Stax Review

Read more about Stax by fattmerchant
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Stax Payments can save you up to 40% on credit card processing fees. But what's the catch? Read this review to find out.

5-point scale (the higher, the better)

Pros and Cons

  • Flat monthly subscription fee, starting at $99
  • 0% markup on Interchange
  • No long-term contract
  • Extra add-on fees
  • Not for low-volume businesses

Bottom Line

Simple subscription-based processor for higher volume businesses

Stax is a good all-in-one option for a payment processor. Not only is it packed with features, they even offer 0% markup, so you can save more on processing fees.

But it's not always the best option for all types of businesses. Read on to know if it's the most cost-effective option for you.

What is Stax?

Stax Payments (previously known as Fattmerchant) is a payment processor that offers subscription-based pricing. It offers various credit card processing solutions and equipment, whether you accept online, phone orders, or in-person payments.

Unlike with other credit card processing companies, you only pay direct interchange costs per transaction with Stax. In exchange for losing the markup, you only need to pay the monthly fee.

Stax is Best for: Large Businesses with High Sales Volume
Stax's pricing model is ideal for larger businesses (with at least $20,000 monthly transaction volume). A small business may find the monthly fee expensive and may be better off with flat-rate pricing.

If you're considering Stax as your credit card processor, first take note of its pros and cons.

Pros & Cons

There are upsides and downsides to Stax Payments.

  • 0% processor markup
  • Month-to-month contract
  • Integrated payment platform
  • Accept multiple modes of payment
  • Add-on fees
  • Expensive for small businesses

Stax's subscription pricing can be a double-edged sword, and whether or not it's good for you depends on your business type. If you process less than $20,000 per month, you may find better value elsewhere.

Dive into this review to know if Stax is suited for you.

Stax Review

Stax Payments is an ideal option since you're offered plenty of features in one platform. Unlike with other credit card processing companies, you won't have to rely so much on third-party integrations with Stax.

You can get payment processing solutions and point-of-sale terminals with it. And if you need more, you can explore the add-ons available.

Because you're not tied to long-term contracts, you can switch processors easily once you've outgrown the platform. But before you even think about switching, here are Stax's features.

Stax Core Features

Regardless of your monthly fee or transaction volume, you will get the same core features with Stax.[1]

These core features let you:

  • Process an in-person transaction
    Stax offers smart terminals and card readers that let you take swipe, dip, and tap payments. These terminals are cloud-based and customizable to your needs.

    The readers even let you accept payments on the go which is handy for mobile businesses. And with the Stax mobile app, you can use your phone or tablet for mobile payment processing.

  • Accept online payments for your e-commerce store
    For your online sales, Stax integrates with multiple payment gateways like BigCommerce, WooCommerce, and Magento.

    You can also customize a shopping cart or use a pre-built one from Stax. And if you use QuickBooks Online, Stax will sync your sales so your books are always up to date.

    Pro tip: With Stax's shopping cart, customers remain on your website for the entire transaction. This can increase the likelihood of a completed transaction (and lowers cart abandonment).

  • Take a keyed transaction with the virtual terminal
    Accept over-the-phone orders by using Stax's virtual terminal. All you need is a computer or mobile device— no extra hardware.

    Your sales will be synced with your smart terminal or mobile device for greater security. The virtual terminal also includes access to invoicing, inventory, and your customer database.

  • Send and manage invoices
    Stax lets you create customizable invoices according to your brand. You can also schedule recurring billing or set scheduled payments for regular clients. And with Text2Pay, you can send these invoices through SMS.[2]

    You can store customer details for card-on-file payments. This makes transactions convenient for you and your customers. You can also set up automatic updates for your cards on file to avoid denied transactions.

  • Send payment links to your customers
    With payment links, customers can pay through text, QR codes, or email. And to avoid chasing those payments, you can set automatic payment reminders.[3]

  • Review data and analytics
    Reporting is one of the essential features of credit card processing companies. With Stax, you can monitor sales trends and customer payment history and manage refunds.

    Plus, you can do so anywhere you are with the iOS or Android mobile app.

Pro tip: Stax offers backup processing through their mobile app. So even if your Wi-Fi signal is weak or the power or internet goes down, you can keep on accepting and processing payments.

Other Processing Services:
Stax Payments also offers ACH Processing and Zero-cost Credit Card Processing.

With ACH processing, you can collect funds electronically directly from the customer's bank account. ACH processing fees are typically more affordable than credit card processing fees.

On the other hand, zero-cost processing lets you add transparent surcharge fees. You can offset your processing costs by passing them on to your customers.

We don't generally recommend surcharging your customers if you're a large and established business. Especially if you're in a competitive industry. This can put off customers and opt for your competitors instead.

If you accept payments in person, Stax offers POS hardware that can help you out.

Stax Equipment

Stax offers a small selection of payment processing equipment, including:[4]

Card readers and terminals are also essential for taking contactless payments like Apple Pay and Google Pay. Since more and more customers are carrying less cash these days, it can be handy to prep for e-wallet payments.

You can opt for the Terminal Protection Plan add-on to protect your devices. You'll get unlimited swaps for any defect, wear and tear, or accidents.

Now that you know what you're getting from Stax, how much will you end up shelling out?

Stax Pricing & Contract

Stax used to offer 3 pricing plans with varying features. It previously offered Growth, Pro, and Ultimate plans, with the cost ranging from $99 to $199/mo.

But now, your monthly fee with Stax will vary depending on your transaction volume. And as mentioned previously, you will get the same core features no matter your monthly fee.

These pricing are suitable for small businesses (at least $20,000 monthly sales).[5]

Price per monthAnnual processing volume
$99/moUp to $250,000/yr
$199/mo$250,000 to $500,000/yr
Custom pricingOver $500,000/yr

Large businesses with over $5M in processing volume can opt for Stax Enterprise for customized solutions. If you have a SaaS platform, choose Stax Connect for the features you need.

Note that you will still need to pay for interchange rates for every transaction. But because there's 0% markup from Stax, you'll generally be billed lower rates.

You may be charged extra if you need additional features (add-ons). A payment gateway may also have extra fees. A Stax rep should clearly communicate to you your final monthly fee.

Stax add-ons for small businesses:
  • ACH Processing
  • One-click Shopping Cart
  • Terminal Protection
  • Custom Branding
  • Next-day Funding
  • Digital Gift Cards
  • Equipment (payment terminal)
  • Level 2 Processing

Stax does not require a contract since it offers month-to-month billing. So you can cancel the service without worrying about an early termination fee. However, you must submit a 30-day written notice before the cancellation date.

Now that you know how much Stax costs, here's what business owners say about them.

Stax Customer Reviews

Stax Payments generally have good reviews, especially regarding their customer support. You can expect a friendly, professional, and prompt response regarding your concerns.

"Very good company with excellent customer support. I was very impressed by the knowledge, professionalism, and of both the customer service reps and the service support reps." — Lawrence (verified Trustpilot user)

However, note that some business owners had bad experiences with Stax's support team. They left their negative reviews, too.

"Would never recommend to anyone. We were given false and misleading information from the very start. We were promised features and capabilities that don't even exists." — LB (verified Trustpilot user)

If you do have concerns yourself or just want to test their customer support, you can contact Stax at 833-782-9729. Or fill out the form on their contact page.

Current customers can call 407-982-1782. But you can also use the online knowledge base when you need answers right away.

If you're on the fence due to the negative reviews or monthly fee, there are other payment processors to check out.

How Stax Payments Compares

Payment Depot, Stripe, and PayPal are good Stax alternatives. Payment Depot offers a more affordable but similar pricing model. While Stripe an PayPal can be better options for small businesses.

1. Payment Depot

Like Stax, Payment Depot offers membership-based pricing. Both of them don't charge a percentage markup on interchange fees.

Payment Depot operates on a month-to-month basis. Pricing plans start at $79 per month. You'll pay a monthly subscription fee based on your annual sales volume, plus the interchange rates for each transaction without percentage markup.

2. Stripe

Stripe offers flat-rate pay-as-you-go pricing, rather than a monthly subscription fee. This works out better for smaller businesses. However, large businesses can get custom pricing.

Stripe is mostly known for being an online processing provider (for eCommerce, B2B, mobile apps, etc.). They offer excellent developer API tools that lets you completely customize your online checkout experience.

3. PayPal

PayPal is one of the most popular options for small businesses. It has different flat-rates based on the processing method. There is no monthly fee.

The biggest advantage of choosing PayPal is that you can accept PayPal and Venmo payments on your website and in-person. You even get a reduced processing rate for PayPal and Venmo QR code transactions. It offers the most payment options to customers.

The platform excels in online credit card transactions, but you do run the risk of cart abandonment, as your customer must leave your website to complete the payment.

Bottom Line

Stax Payments (formerly Fattmerchant) is best suited for mid- to larger-size business that processes more than $20,000 per month.

By having no per-transaction markup, you can save a lot on processing fees. And the flat-rate monthly subscription pricing keeps things simple.


  1. ^ Stax. Pricing, Retrieved 08/19/23
  2. ^ Stax. Text2Pay, Retrieved 8/29/23
  3. ^ Stax. Payment Links, Retrieved 8/29/23
  4. ^ Stax. Equipment, Retrieved 08/20/23
  5. ^ Stax. Pricing, Retrieved 8/29/23
Stax by fattmerchant

Save Up to 40%

  • Flat Monthly Subscription Price, Starting at $99
  • 0% Markup on Direct-Cost Interchange
  • 24/7 Support
Square Reader: Free Mobile Credit Card Reader

Square Reader: Free Mobile Credit Card Reader

  • Pay 2.6% + 10¢ Per Swipe for Visa, Mastercard, Discover, and American Express
  • Accept Credit Cards Anywhere
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Payment Depot

Save 40% or More

  • Wholesale Rates
  • Membership Fee Model
  • No Cancellation Fees

Eliminate Credit Card Processing Fees With Surcharging

Accept Credit Cards at 0% Cost and Increase Your Margins Instantly

Chase Payment Solutions

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  • Accept cards online or over the phone with our payment gateway or use our pre-built payment integrations to leading eCommerce platforms and virtual terminal options.
  • Process payments with Chase Payment Solutions, the #1 merchant acquirer in the U.S.
  • Tap to Pay on iPhone offers you the ability to accept contactless cards, Apple Pay and other digital wallets on your iPhone – no additional hardware required.
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