Shopify payment solutions
Cardflo provides robust payment solutions for Shopify merchants, integrating advanced payment orchestration directly into the Shopify platform. These solutions enable smart routing, decline recovery, and a broad spectrum of payment methods, enhancing checkout efficiency and approval rates.
Shopify stores can optimise their payment infrastructure to support growth.
- Category
- Plugins
- Capabilities
- 10
- Available on
- All plans
The overview
Shopify payment architecture relies on a combination of front-end checkout logic and back-end processing via an authorised gateway or third-party acquirer.
Integrating advanced payment logic into this framework involves the use of external processors that can handle complex transaction flows such as smart routing and currency management. Merchants operating on Shopify often face limitations with default processing, particularly regarding cross-border acceptance and fixed interchange rates.
By utilising an external payment service provider, businesses can implement more granular control over their merchant IDs and transaction routing. This process sits between the Shopify cart and the global card schemes, facilitating secure data transfer while adhering to PCI DSS standards.
A well-configured payment stack ensures that authorisation requests are channelled to the most appropriate acquirer based on the issuer's geography, the merchant category code, and the transaction value,
which can help in reducing the frequency of false declines and improving the efficiency of the settlement cycle.
How it works
API Handshake and Setup
The merchant connects their Shopify store to the payment gateway using an API key or a dedicated app integration. This establishes a secure communication path where the store transfers basket data and customer profiles to the processor.
The system verifies credentials and configures the merchant account identifiers to ensure correct funds distribution during settlement.
Checkout Redirection or Modal
When a customer initiates a payment, Shopify hands off the transaction details to the payment provider. This can occur via a hosted payment page or an embedded modal to maintain SCA compliance.
The customer enters their card details, which are tokenised immediately to prevent sensitive data from resting on the merchant server.
Smart Routing and Authorisation
The gateway analyses the BIN and transaction metadata to determine the optimal routing path. It sends the authorisation request to the acquirer with the highest likelihood of approval for that specific card type.
The acquirer then communicates with the issuer, who performs fraud checks and verifies the available credit or balance.
Capture and Settlement Logic
Once the issuer provides an authorisation code, the transaction is marked as pending capture. Merchants can configure the system to capture funds automatically or manually after shipping.
The processor then batches these transactions, subtracts interchange and scheme fees, and initiates the transfer to the merchant’s bank account according to the agreed schedule.
Why it matters
Conversion and Approval Optimisation
Standard Shopify setups might route all traffic through a single acquirer, which can lead to higher refusal rates for international cards or specific risk profiles. By employing sophisticated routing and failover logic, a merchant can retry failed transactions through secondary acquirers.
This helps maintain higher authorisation rates and reduces customer churn at the final stage of the purchasing journey.
Operational Cost Management
Transaction costs on Shopify vary significantly depending on whether a merchant uses the native processor or an external gateway. Implementing an interchange-plus-plus pricing model provides transparency into the components of every fee.
This allows high-volume businesses to analyse their scheme fees and domestic versus cross-border split, potentially reducing the total cost of acceptance through data-driven acquirer selection.
Use cases
Global E-commerce Expansion
A Shopify brand expanding into European or Asian markets needs local acquiring to avoid high cross-border fees and low approval rates from domestic issuers. Localised routing ensures payments are processed as domestic transactions wherever possible.
High-Volume Subscription Models
Merchants using Shopify for recurring billing require robust tokenisation and account updater services. This ensures that expired or replaced cards do not cause subscription interruptions, utilising merchant-initiated transaction flags to maintain continuity.
Multi-Acquirer Risk Redundancy
Enterprises that cannot afford downtime use multiple merchant IDs across different acquirers. If one acquirer experiences a technical outage or a surge in declines, the payment logic automatically redirects traffic to a functional backup.
By the numbers
This range is commonly observed by merchants who move from a single-acquirer setup to a multi-acquirer or smart-routing environment.
Industry typical savings when replacing international card processing with local acquiring for foreign transactions.
Standard performance target for modern payment gateways to ensure minimal friction during the Shopify checkout process.
Related terms
Talk to our team about a live rollout on your acquiring stack.
What you get with Shopify payment solutions
- Native Shopify integration supports a standardised checkout flow for improved customer experience and trust.
- Intelligent transaction routing directs authorisation requests to the acquirer best suited for the specific BIN.
- Support for merchant-initiated transactions enables stable billing for subscription-based Shopify business models.
- Integrated fraud prevention tools utilise 3-D Secure to reduce incidence of unauthorised card use.
- Multi-currency settlement allows merchants to receive funds in their preferred currency, avoiding unnecessary conversion fees.
- Access to a wide range of alternative payment methods increases reach in non-card dominated regions.
- Comprehensive reporting dashboards provide granular data on decline reasons and settlement timelines for reconciliation.
- Tokenisation services secure primary account numbers, reducing the merchant's PCI DSS compliance burden significantly.
- Automatic account updater services help maintain current card details for recurring Shopify customer profiles.
- Flexible pricing structures allow for interchange-plus models that provide deep visibility into processing costs.
A short scoping call, then a written plan for your MIDs.
Questions about Shopify payment solutions
How does using a third-party gateway impact Shopify transaction fees?
When a merchant chooses an external payment provider instead of Shopify Payments, the platform usually applies an additional transaction fee ranging from 0. 5% to 2% depending on the Shopify plan.
However, for high-volume merchants, the savings gathered from more competitive interchange-plus rates, better cross-border handling, and improved authorisation rates often outweigh this additional platform fee.
It is a matter of calculating whether the reduced processing cost and recovered declines provide a net financial benefit compared to the fixed-rate native model.
Can I use multiple acquirers with my Shopify store integration?
Yes, through the use of a payment orchestration layer or a gateway that supports multi-acquirer routing. While Shopify generally connects to one primary gateway at a time, that gateway can act as a hub to route transactions across various backend merchant IDs.
This setup is particularly effective for managing risk, as it allows for automatic cascading or failover if a specific acquirer returns a soft decline or experiences a service interruption.
Is 3-D Secure 2.0 supported for PSD2 compliance on Shopify?
Strong Customer Authentication is a requirement for most transactions within the European Economic Area. Professional payment integrations for Shopify are designed to trigger 3DS challenges only when necessary, such as for high-value transactions or when the issuer requests it.
This selective application of friction helps maintain compliance with PSD2 while minimising the impact on the customer checkout experience by favouring frictionless flows whenever possible.
How are chargebacks and disputes handled in this setup?
When a cardholder disputes a transaction, the notification is transmitted from the issuer to the acquirer and then to the payment gateway. The gateway provides a management interface where the merchant can upload evidence for representment.
By centralising this data, merchants can better analyse dispute patterns by product category or geography. Effective gateway integration ensures that the merchant is notified promptly of retrieval requests, providing a window to resolve issues before they escalate to a formal chargeback.
Can I process recurring payments on Shopify using an external provider?
Yes, Shopify supports recurring billing via its Subscription API, which can be linked to external payment gateways. The gateway must support tokenisation and the storage of payment credentials for merchant-initiated transactions.
This allows the system to store a secure token representing the card details, which is then used to trigger subsequent payments without the customer being present, following the initial customer-initiated transaction and mandate.
What is the difference between a soft decline and a hard decline on Shopify?
A hard decline occurs when the issuer permanently rejects the transaction, such as for a stolen card or an invalid account; these should not be retried. A soft decline typically stems from temporary issues like insufficient funds or technical timeouts.
Advanced payment setups for Shopify can automatically retry these soft declines using different routing parameters or timing, which can recover a significant percentage of initially rejected sales.
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