Stax Connect
Stax Connect provides embedded payments for vertical SaaS platforms in areas such as field services, professional services, healthcare, education, and nonpro…
What Stax Connect is
Stax Connect provides embedded payments for vertical SaaS platforms in areas such as field services, professional services, healthcare, education, and nonprofits. It offers hosted components, SDKs, branded dashboards, and merchant enrollment options ranging from hosted to custom. Platforms can accept online and in-person payments, recurring commerce, cards, Apple Pay, Google Pay, ACH, PayPal, and Venmo. Developer tools include a REST API, JavaScript and Python SDKs, iOS and Android mobile SDKs, and webhooks for payment and dispute events. Payment operations include reporting for enrollment, transactions, disputes, and deposits, plus split funding and same-day or next-day deposits. Platforms can apply compliant surcharging, custom fees, and other flexible pricing options. Stax lists PCI compliance at scale, in-house AML/KYC checks, daily monitoring, and controls for suspicious activity. Support includes pre-launch implementation and sales and marketing help, with optional post-launch Tier 1 support. Pricing is available on request. Some in-person capabilities require a card-present integration, and Level 2 processing is limited to eligible transactions.
Good
- Hosted components and branded dashboards
- Accepts online and in-person payments
- Offers broad API, SDK, and webhook coverage
- Includes split funding and deposit reporting
- Pre-launch implementation support is available
Watch out
- Pricing is available on request
- Some in-person capabilities require a card-present integration
- Level 2 processing applies only to eligible transactions
Who it suits
Stax Connect is aimed at vertical SaaS teams that need to embed payments and manage merchant enrollment, payment operations, and monetization. Its API and SDK options may suit teams integrating payments into web and mobile products.
Verdict
Stax Connect combines payment acceptance, developer tools, and payment operations for software platforms. Teams should confirm pricing and whether their integration qualifies for the listed in-person and Level 2 processing capabilities.
Plans and prices
From Stax Connect's own pricing page, checked 15 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Stax Connect | Priced on request | Pricing is not publicly listed · Custom partner pricing · Contact sales for embedded-payments pricing |
The facts
Each one read from Stax Connect's own pages, with the date it was checked.
What it does
- API endpoints
- Stax publishes separate API endpoints and developer documentation for its US, EU and Australia installations.checked 15 Oct 2026
- Custom API effort
- Custom API enrollment may take about 2.5 weeks for one fully dedicated developer and requires document upload, electronic signatures and edit or re-sign flows.checked 15 Oct 2026
- Developer tools
- Developers can use a REST API, JavaScript and Python SDKs, mobile SDKs for iOS and Android, and webhooks for payment and dispute events.checked 2 Oct 2026
- Encryption and tokenization
- Stax says card data is encrypted on processing devices, not retained after transactions and protected with tokenization.checked 15 Oct 2026
- Enrollment options
- Partners can choose white-label landing pages, white-glove enrollment, hybrid API enrollment or custom API enrollment.checked 15 Oct 2026
- Fraud controls
- Stax says it monitors accounts for unauthorized charges and performs KYC and CIP checks through financial partners.checked 15 Oct 2026
- Funding and eligibility
- Level 2 processing is available on eligible transactions, and some listed in-person payment capabilities require a card-present integration.checked 2 Oct 2026
- Hybrid API effort
- Stax estimates about four days for a dedicated developer to implement hybrid enrollment.checked 15 Oct 2026
- Implementation timeline
- Stax states its average implementation timeline is 45 days.checked 15 Oct 2026
- Landing-page limitation
- White-label landing pages have limited customization, cannot use a partner domain or favicon and support only one pricing option per page.checked 15 Oct 2026
- Licence
- The reviewed materials describe a hosted commercial service and do not state an open-source licence.checked 15 Oct 2026
- Limit: administration
- A reviewer says administrators cannot configure portal access for different locations without contacting Stax.checked 15 Oct 2026
- Limit: deposits
- A Trustpilot reviewer reported a missed deposit, more than $8,000 in losses and difficulty obtaining help.checked 15 Oct 2026
- Limit: fee complaints
- NerdWallet reports user complaints about surprise price increases and statements containing several pages of miscellaneous fees.checked 15 Oct 2026
- Limit: sales transparency
- A reviewer says an initial comparison quote omitted the monthly charge until a revised quote was requested.checked 15 Oct 2026
- Limit: small-business economics
- NerdWallet says the $99-or-more monthly fee is generally uneconomic for businesses processing under $10,000 per month.checked 15 Oct 2026
The company
- Company
- Stax says it was founded in Orlando, Florida, in 2014.checked 2 Oct 2026
- Company development
- Stax says Stax Connect launched in 2020 and that it has more than 30,000 merchant customers and over 150 integrated software partners.checked 15 Oct 2026
- Company founding and headquarters
- Stax Payments identifies itself as founded in 2014 and headquartered in Orlando, Florida.checked 15 Oct 2026
- Company legal name
- Crunchbase lists the legal name as Stax Payments, Inc., formerly known as Fattmerchant.checked 15 Oct 2026
- Company size
- LinkedIn lists Stax Payments in the 201–500 employee size range.checked 15 Oct 2026
- Founded
- 2014checked 28 Sep 2026
- Headquarters
- Orlando, Florida, United Stateschecked 28 Sep 2026
Money
- Limit: billing and cancellation
- BBB reviewers allege continuing withdrawals after cancellation, unexpected fee increases and recurring performance or chargeback fees.checked 15 Oct 2026
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