Pay-In-3 for WooCommerce Gateway

Custom WooCommerce Installment Payment Gateway

Target Client: FinTech / High-Value E-commerce

The Challenge

The goal was to increase conversions for high-ticket items by offering a custom, native installment payment option directly at checkout, without relying on third-party SaaS fees.

This required deep integration into WooCommerce’s payment lifecycle and precise control over the post-checkout confirmation process.

The Solution

We engineered a complete, native WooCommerce payment gateway built on WooCommerce’s abstract class structure.

The solution utilizes a key dynamic hook (woocommerce_thankyou_{gateway_id}) to suppress default output and display a custom, focused installment schedule—proving total control over the checkout experience.

Impact And Results

Conversion: Enables marketing of high-value goods through transparent, in-house installment options.

Auditability: Complete technical log of the installment schedule is immediately available to store staff via Order Notes.

Key Features

Architecture: Native Gateway - Registers as a complete payment method using WooCommerce’s abstract class, ensuring compatibility.

Checkout Control: Dynamic UI Suppression - Utilizes advanced hooks to customize the post-checkout page and suppress standard output, focusing the user on payment terms.

Data Logging: Auditable Installments - Logs the payment setup and 3-part installment schedule directly into the standard WooCommerce Order Notes for an immediate audit trail.

Security: Adheres to security best practices, including mandatory unslashing (wp_unslash()) before sanitization of all input data.

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