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CartModules: PayPay Payment Gateway
Accept PayPay QR Code Payments in Your CS-Cart Store
Integrate PayPay — Japan's most popular QR code payment service with over 60 million registered users — directly into your CS-Cart or Multi-Vendor store. Customers complete payment by scanning a QR code or tapping through the PayPay app, providing a fast and frictionless checkout experience.
Key Features
- QR Code Payments — Customers pay via the PayPay app using Web Cashier (ORDER_QR) flow
- Redirect-Based Flow — No card data touches your server (PCI SAQ A compliant)
- Automatic Order Updates — Payment status is queried on customer return and via webhook notifications
- Sandbox/Production Toggle — Switch between test and live environments from the admin panel
- Configurable Order Statuses — Map PayPay statuses (Completed, Canceled, Expired) to any CS-Cart order status
- HMAC-SHA256 Authentication — Secure API communication using PayPay's official HMAC authentication
- Idempotent Callbacks — Duplicate webhook notifications are safely ignored
- JPY Currency — Native Japanese Yen support (integer amounts, no decimals)
Requirements
- CS-Cart or Multi-Vendor 4.x
- PHP 7.1 or higher
- PayPay merchant account with API Key and API Secret
- Store currency set to JPY (Japanese Yen)
How It Works
- Customer selects PayPay at checkout and clicks "Place Order"
- A unique QR code is generated via the PayPay API
- Customer is redirected to the PayPay payment page to scan or approve payment
- After payment, customer is redirected back to your store
- Order status is updated automatically based on PayPay's response
Installation
- Go to Add-ons > Manage add-ons, click Manual installation, and upload the addon zip
- Activate the addon and enter the license key
- Go to Administration > Payment methods and create a new payment method
- Select "PayPay Payment Gateway" as the processor
- Enter your API Key and API Secret from the PayPay developer dashboard
- Configure order status mappings as desired
- Save and test with sandbox mode before going live
Country & Currency
This addon is designed for merchants selling in Japan. PayPay exclusively supports JPY (Japanese Yen). Ensure your store's primary currency is JPY.
Payment type
One-time payment
Product
- Store Builder
- Store Builder Ultimate
- Multi-Vendor
- Multi-Vendor Plus
- Multi-Vendor Ultimate
Compatible versions
- 4.20.1
- 4.19.1.SP2
- 4.19.1.SP1
- 4.19.1
- 4.18.4
- 4.18.3
- 4.18.2.SP1
- 4.18.2
- 4.18.1.SP1
- 4.18.1
- 4.17.2.SP3
- 4.17.2.SP2
- 4.17.2.SP1
- 4.17.2
- 4.17.1
- 4.16.2
- 4.16.1
- 4.15.2
- 4.15.1.SP4
- 4.15.1.SP3
- 4.15.1.SP2
- 4.15.1.SP1
- 4.15.1
- 4.14.3
- 4.14.2.SP1
- 4.14.2
- 4.14.1.SP1
- 4.14.1
- 4.13.3
- 4.13.2.SP2
- 4.13.2.SP1
- 4.13.2
- 4.13.1
- 4.12.2
- 4.12.1
- 4.11.5
- 4.11.4
- 4.11.3
- 4.11.2
- 4.11.1
- 4.10.4.SP1
- 4.10.4
- 4.10.3
- 4.10.2
- 4.10.1
- 4.9.3
- 4.9.2
- 4.9.1
- 4.8.2
- 4.7.4
- 4.6.3
Localizations
- English
Contact information
Email
Phone
+91-96538-49089
Website
CartModules is an authorised CS-Cart reseller in India and a CS-Cart development specialist since 2014. We have delivered 250+ projects for businesses in 20+ countries and publish 125+ solutions on the CS-Cart Marketplace, all developed and maintained in-house.
What we are known for
Integrations. We help merchants connect CS-Cart with the platforms and services they already use.
Marketplace Connectors. Connect CS-Cart Multi-Vendor with Shopify, WooCommerce, Wix, PrestaShop, Shopware 6, Squarespace, Square and Ecwid through individual connectors, all managed from one place with Shop Connector Manager.
Payments. 90 payment gateway add-ons covering regional methods and buy-now-pay-later, including Tabby, Tamara, Afterpay, Sezzle, Affirm, Almapay, Takbull, Windcave, aamarPay and Atmos.
Shipping. 14 shipping integrations including ShipStation, Shippo, Smart Shipping & Fulfillment Manager, Aramex, DTDC, Ekart, Shiprocket, Safexpress, UPS and Purolator.
Search and AI. Algolia AI Instant Search and AI Store Copilot.
What we do
- CS-Cart Store and Multi-Vendor Marketplace Development
- Custom Add-on Development
- Third-Party API and Service Integrations
- Marketplace Connectors
- Multi-Store Development
- CS-Cart Version Upgrades
- Migration to CS-Cart
- Custom Themes and UI/UX Development
- Mobile App Development
- Payment and Shipping Integrations
- Server Support, Maintenance and Performance Optimization
Support
Every CartModules add-on is maintained by the team that developed it, so technical support and updates come directly from us. We also offer a 30-day money-back guarantee on every CartModules add-on.
Need a custom CS-Cart solution?
sales@cartmodules.com
 | +91 96538 49089
 | cartmodules.com
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