Cardknox
Payment gateways
Payment software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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Pay-as-you-go
Free Trial unavailableFree version unavailable
Small
Medium
Large
- Accommodation and food services
- Retail and wholesale
- Healthcare and life sciences
What is Cardknox
Cardknox is a payment gateway and payment processing platform used to accept and manage card-present and card-not-present payments. It is typically used by software platforms, merchants, and payment facilitators that need API-based payment acceptance, tokenization, and support for recurring billing. The product provides gateway services, integrations for common POS and eCommerce environments, and security features such as tokenization and support for PCI-scoped implementations. Cardknox also supports ACH/eCheck and other payment workflows depending on the integration and merchant setup.
Developer-oriented API and SDKs
Cardknox provides API-based payment acceptance designed for integration into custom applications and vertical software. It supports common gateway functions such as authorizations, captures, refunds, voids, and tokenization for stored payment methods. This makes it suitable for ISVs that want to embed payments without building a gateway layer from scratch.
Tokenization and PCI support
The platform supports tokenization to reduce exposure of sensitive card data within merchant systems. It offers integration patterns intended to help merchants and software providers manage PCI scope, such as hosted or token-based approaches. These capabilities are important for recurring billing, card-on-file use cases, and multi-channel payment acceptance.
Multi-channel payment acceptance
Cardknox supports both card-present and card-not-present acceptance, enabling use cases across retail, field services, and online payments. It offers integrations that can be used with POS and eCommerce deployments, depending on the merchant environment. This flexibility can reduce the need to maintain separate payment stacks for in-person and online channels.
Pricing transparency varies
Publicly available pricing and fee structures can be less standardized than some self-serve payment platforms. Total cost often depends on merchant risk profile, processing setup, and any partner or reseller relationship. This can make early-stage cost comparison and budgeting harder without a formal quote.
Feature set depends on setup
Capabilities such as alternative payment methods, payout tooling, and advanced subscription management can vary based on the specific integration path and merchant account configuration. Some functionality may require additional services, third-party components, or custom development. Buyers should validate required features in a proof-of-concept rather than assuming parity with broader all-in-one payment suites.
Implementation requires technical effort
While the product is designed for integration, embedding payments still requires engineering work for checkout flows, error handling, and compliance processes. Organizations without in-house development resources may find implementation more complex than fully hosted, plug-and-play options. Ongoing maintenance is also needed as payment requirements and security standards evolve.
Plan & Pricing
Pricing model: Pay-as-you-go (transaction fees; interchange-plus or flat-rate options; Cardknox provides custom/merchant-specific pricing and asks merchants to contact sales).
Free tier/trial: No permanently free plan or time-limited free trial published on the official site (see notes below).
Example costs (official site evidence):
- eDonate (Cardknox product for charity donation tablets) – 2.9% + $0.30 per transaction (flat rate; “no extra fees”).
- Cardknox Go (PayFac offering) – described as offering “simple, flat-rate pricing” for merchants via the PayFac model, but no public price points are published; requires contacting Cardknox for rates.
Discount / pricing notes:
- Cardknox emphasizes interchange qualification optimization (IQM) to lower merchant rates and asks for monthly payment volume during contact forms, indicating pricing may vary by volume and is negotiated per merchant.
- For most products (gateway, API integrations, Cardknox Go) the official site does not publish standard per-transaction or monthly plans — prospective customers are directed to contact sales for pricing.
Seller details
Cardknox Development, Inc.
Private
https://www.cardknox.com/
https://x.com/cardknox
https://www.linkedin.com/company/cardknox/
