
Stax offers a comprehensive suite of payment products. Stax Pay is their flagship product for businesses, offering transparent subscription pricing saving customers up to 40% with 0% markup on direct-cost interchange. The platform supports in-person card payments, online payments, mobile payments, invoicing, recurring billing, ACH processing, and a virtual terminal — all included in the monthly subscription. Stax also provides an API for developers with webhooks, JavaScript and Python SDKs, and comprehensive mobile SDKs, allowing businesses to add payment processing to their own software and mobile apps. Additionally, Stax Connect serves SaaS platforms and ISVs with embedded payment capabilities, while Stax Bill handles automated subscription billing, and CardX by Stax provides compliant credit card surcharging.
The company's primary strength is its pricing model: Stax offers membership pricing, a variant of interchange-plus pricing in which merchants pay 0% markup on interchange rates and instead pay a monthly membership fee — making it a solid value for merchants processing upwards of $10K/month. Stax is also frequently praised for its robust feature set, including customizable invoicing, real-time analytics dashboards, and an extensive integration library.
The main weaknesses center on the cost-effectiveness threshold and customer service inconsistencies. Because merchants must pay a subscription fee, Stax Payments is best suited for businesses processing at least $5,000 monthly in credit card transactions — lower volume businesses may find the monthly fees outweigh the savings. NerdWallet Additionally, numerous BBB complaints cite billing disputes, unauthorized charges, and difficulties canceling accounts, which point to operational gaps between sales promises and account management execution.
Stax is a payments technology company founded in 2014 that partners with SaaS companies, ISOs, and SMBs to enable flexible, multi-channel payment processing and invoicing solutions, claiming a distinctive subscription-based pricing model with 0% interchange markup.
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Based on 2,018 reviews across 4 rating platforms
Negative reviews describe billing and rate disputes, difficulty canceling, and unauthorized charges. Common complaints reference bait-and-switch pricing, funds being held, and unauthorized services being enrolled. Stax responds professionally to nearly all complaints.
Reviews are generally positive, praising customer service and pricing; negative reviews echo BBB themes around billing changes and support delays.
Positive reviews praise responsive and knowledgeable reps during onboarding and ongoing support. Negative reviews mention difficulty getting critical issues resolved quickly, especially processing outages during busy periods.
Users consistently praise the software for its ease of use and transparent pricing. Criticism focuses on monthly fees being high relative to transaction volume for some business types.
Card-not-present, e-commerce, and online payments
Card-present retail and point-of-sale transactions
Manually entered card-not-present transactions
Cross-border and foreign currency transactions
Recurring monthly account fee
One-time account setup and onboarding fee
Annual PCI DSS compliance and security fee
Monthly account statement and reporting fee
Per-incident chargeback dispute fee
Fee for canceling before contract end
Regular deposit schedule to your bank account
Faster deposit option (may have additional fees)
Minimum balance required before payout
This provider offers month-to-month terms with no long-term commitment.
Required commitment period
month-to-month subscription
How to terminate your account
Requires 30 days' notice before canceling
Payment Card Industry Data Security Standard compliance level
PCI-compliant
Fraud detection and prevention tools
Fraud protection included with all subscriptions
Encryption standards for data at rest and in transit
End-to-end encryption across all transaction types
Replace sensitive card data with secure tokens
Compatible shopping cart and online store platforms
Sync transactions with your accounting tools
Connect with customer relationship management platforms
Additional third-party integrations and tools
Manage recurring subscriptions and billing cycles
Create and send professional invoices
Multi-vendor marketplace functionality
Accept payments manually via web interface
Automated recurring payment processing
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Based on 158 employee reviews
Positive employee feedback highlights responsive leadership (to a degree), good compensation and benefits, a differentiating payments platform, and enjoyable culture. Negative feedback cites high rates of change and adjustment, and some employees feel leadership responsiveness could be improved. Glassdoor Engineering staff specifically mention that many teams have very few full-time developers relative to the projects they support, and that some key projects are built on older technology with limited appetite to modernize
Stax's support receives consistently high praise on Trustpilot, with many reviewers specifically naming helpful individual reps. However, complaints have been getting more frequent, with issues around billing disputes and fee questions often requiring multiple contacts to resolve. Support quality appears strong at the individual level but inconsistent at the escalation and operational level.
Estimate your monthly costs
This calculator provides an estimate based on available pricing information. Actual costs may vary. Contact Stax for a personalized quote.
2014
618 E South St, Suite 510, Orlando, FL 32801
300+