Paddle Billing v3

Paddle Billing for WHMCS – Feature Overview

Paddle Billing is a powerful and modern payment gateway for WHMCS, designed to provide seamless billing, subscription management, and advanced automation using Paddle’s infrastructure.

Core Features

Full Paddle Billing Integration – Connect WHMCS directly with Paddle Billing for payments and subscriptions.
One-Time & Subscription Payments – Supports both single payments and recurring billing workflows.
Client Checkout Experience – Smooth and secure Paddle-hosted checkout for customers.
Invoice Payment Support – Pay all WHMCS invoices directly using Paddle.
Product & Addon Billing – Supports recurring and one-time billing for products and addons.
Domain Payment Support – Enables Paddle payments for domain registrations and renewals.

Webhook & Automation (v3.0 Enhanced)

Advanced Webhook System – Reliable handling of Paddle events with improved processing logic.
Webhook Signature Verification – Secure webhook validation using Paddle webhook secret.
Automatic Event Processing – Automatically sync transactions, subscriptions, and updates.
Webhook Logging System – Track all webhook activity inside WHMCS for debugging and monitoring.
Automatic Log Cleanup – Automatically delete old webhook logs after configurable days.

Payments, Refunds & Credit Notes

Full Refund Support – Process complete refunds directly from WHMCS.
Partial Refund Support – Issue partial refunds with accurate transaction mapping.
Live Transaction Sync – Uses real Paddle transaction data for better reliability.
Credit Note Visibility – View Paddle credit note references directly inside WHMCS.
Recurring Billing Handling – Improved subscription lifecycle and renewal management.

Currency & Conversion System

Conversion Snapshot System – Stores exchange rate at checkout to prevent mismatches.
Accurate Callback Handling – Ensures correct invoice matching even after rate changes.
Convert To Currency Support – Fully supports WHMCS "Convert To" functionality.
Multi-Currency Compatibility – Works with multiple WHMCS currencies seamlessly.
Decimal Handling Improvements – Better handling for currencies with strict formatting rules.

Admin Features

Easy Gateway Configuration – Simple setup inside WHMCS admin panel.
Addon Module Control Panel – Manage settings, logs, and tools in one place.
Make Enhanced Refunds – Make Partial and Full refunds easily.

Client Features

Subscription Management – Clients can manage and cancel subscriptions.
Flexible Payment Options – Choose between subscription or one-time payments.
Secure Checkout – Payments handled securely via Paddle infrastructure.

Security & Stability

Improved System Reliability – More stable processing across all billing operations.
Secure API Communication – Safe interaction between WHMCS and Paddle.
Enhanced Error Handling – Better logging and handling of failed events.

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Version Compatibility

Compatible with WHMCS v9.0

Full Version Compatibility

All versions of WHMCS v9.0
All versions of WHMCS v8.13
All versions of WHMCS v8.12
All versions of WHMCS v8.11
Selected versions of WHMCS v8.10
8.10.0
Selected versions of WHMCS v8.9
8.9.0
Selected versions of WHMCS v8.8
8.8.0
All versions of WHMCS v8.7
All versions of WHMCS v8.6
All versions of WHMCS v8.5
All versions of WHMCS v8.4
All versions of WHMCS v8.3
All versions of WHMCS v8.2
All versions of WHMCS v8.1
All versions of WHMCS v8.0
All versions of WHMCS v7.10
All versions of WHMCS v7.9
All versions of WHMCS v7.8
All versions of WHMCS v7.7
All versions of WHMCS v7.6
All versions of WHMCS v7.5
All versions of WHMCS v7.4
Selected versions of WHMCS v7.3
7.3.0
All versions of WHMCS v7.2
All versions of WHMCS v7.1
All versions of WHMCS v7.0
All versions of WHMCS v6.3
All versions of WHMCS v6.2
All versions of WHMCS v6.1
All versions of WHMCS v6.0
All versions of WHMCS v5.3

Support for this product

The best place to start if you need help with a specific product is to contact the developer. All WHMCS Marketplace developers have both a website and support URL listed.

Visit Website Contact Support

Developed By iBeeHost

Changelog

v3.0 Released April 13th, 2026

Latest Version

Here’s a clean, professional changelog you can use for WHMCS Marketplace, release notes, or your website:

Changelog – Paddle Billing for WHMCS

v3.0 – Major Release

New Features

Added Convert To function to use multiple currencies
Added Webhook Signature Verification for enhanced security using Paddle webhook secret
Introduced Conversion Snapshot System to store exchange rates at checkout
Added Automatic Webhook Log Cleanup with configurable retention period
Implemented Credit Note Visibility within WHMCS admin invoice view
Improved Refund System with support for full and partial refunds using live transaction data

Improvements

Completely redesigned Webhook Processing System for better reliability and accuracy
Improved Recurring Billing Handling for subscriptions and renewals
Enhanced Currency Conversion Logic with full support for WHMCS “Convert To”
Optimized Transaction Matching & Callback Handling to reduce mismatches
Improved Admin Logging & Debugging Tools for easier troubleshooting
Better handling of multi-currency environments

Fixes

Fixed inconsistencies in webhook event handling
Resolved issues with incorrect invoice matching during callbacks
Fixed edge cases in refund calculations and processing
Improved stability across subscription lifecycle events

Notes

v3.0 is a major upgrade and includes significant internal changes
It is recommended to review the installation guide before upgrading