The short answer
A charge from STAX* SUBSCRIPTION POS represents a monthly subscription payment processing fee ($99 to $199/mo) from Stax Payments, LLC (formerly Fattmerchant).
Why it shows up like this
Stax provides flat-fee membership merchant processing, where businesses pay a monthly subscription fee instead of percentage markups on interchange.
Descriptors include STAX* SUBSCRIPTION POS, STAX PAYMENTS, or FATTMERCHANT* STAX, billing monthly SaaS membership tiers ($99 to $199/mo).
Common reasons for this charge
- A monthly Stax membership fee for 0% markup credit card processing.
- A monthly gateway or Stax Pay virtual terminal access fee.
- An annual PCI compliance certification fee.
How to locate the invoice and cancel
- Sign in to Stax Portal Go to app.staxpayments.com and log in with your merchant account.
- Access Billing Statements review to Settings > Invoices & Billing to view itemized subscription invoices.
- Cancel Plan Contact your assigned Stax customer success representative or call 1-877-559-8197.
Frequently Asked Questions
Why does Stax charge a monthly subscription?
Stax uses a wholesale subscription pricing model: merchants pay a flat monthly membership fee and receive direct interchange rates with 0% processor markup.
Is Stax month-to-month?
Yes, Stax offers month-to-month merchant agreements without long-term cancellation penalties on standard plans.
Dispute Rights & Fraud Prevention
If you did not authorize a Stax subscription, notify their support team and your business bank immediately.
Commercial card disputes must be submitted within 60 days under the Fair Credit Billing Act.
How do I contact Stax support?
Call 1-877-559-8197 or visit staxpayments.com/support.
How long does a dispute investigation take?
Card issuers must complete their formal billing inquiry within two billing cycles (up to 90 days).
Independent reference — not affiliated with Stax Payments, LLC. Billing names and policies change; verify with the merchant or your bank before acting.
Verified sources
Every claim on this page is checked against official sources — open them to confirm before you call your bank.
- Stax Terms of Service https://staxpayments.com
- CFPB: Commercial Merchant Subscription Oversight https://www.consumerfinance.gov
Reviewed Aug 15, 2026 · high · About UnknownCharges