Accept Crypto Payments on WHMCS
Gemini said Here is a concise blog summary optimized for readability and engagement, designed to pull readers into the full guide. Blog Summary: Integrating Crypto via INXY for WHMCS In 2026, cryptocurrency has moved beyond speculation to become a primary "production" currency for global digital services. For hosting providers and agencies using WHMCS, the shift toward stablecoins—the "Internet’s dollar"—is a critical competitive advantage. This guide explores how to integrate the INXY Payment Gateway, a robust solution designed to bridge the gap between traditional billing and the modern crypto economy.
In 2026, the fintech landscape is shifting from speculation to production. For hosting providers, VPN services, and digital agencies using WHMCS, the question is no longer if you should accept cryptocurrency, but how efficiently you can do it. With stablecoins becoming the "Internet’s dollar" for cross-border flows, integrating a robust payment gateway is essential for maintaining a competitive edge in the EU and global markets.
One of the most seamless ways to bridge the gap between traditional billing and the crypto economy is through the INXY Payment Gateway. This guide provides a detailed walkthrough for setting up the INXY module on your WHMCS platform.
1. Why Crypto for WHMCS in 2026?
Integrating crypto payments into your billing system offers several strategic advantages:
- Lower Fees: Traditional processors often charge 2–4% for international payments, while gateways like INXY provide more cost-effective alternatives.
- Chargeback Protection: Blockchain transactions are immutable; once confirmed, they cannot be reversed by the sender, eliminating the administrative burden of fraudulent chargebacks.
- Global Reach: Crypto allows you to accept payments from customers in regions with restrictive banking or unstable local currencies without multi-day delays.
2. System Requirements
Before installation, ensure your environment meets the following criteria for the INXY module (Version 1.0.3):
- WHMCS Version: 8.0 up to 8.13.1.
- PHP Version: 7.4 or higher with ionCube Loader.
- Merchant Account: A valid account on the INXY platform.
- Security: An SSL certificate is recommended to ensure secure webhook notifications.
3. Step-by-Step Installation
Step 1: Download the Module
Download the official module archive from the INXY distribution folder.
Step 2: Upload Files
Using FTP or your hosting file manager, upload the files to your WHMCS directory following this structure:
- /modules/gateways/inxy.php
- /modules/gateways/inxy/ (including assets, pages, and config files)
- /modules/gateways/callback/inxy.php
Step 3: Activation
- Log in to your WHMCS Admin Panel.
- Go to Apps & Integrations and find the INXY Payment Gateway.
- Click Activate.
4. Configuration and API Setup
Navigate to System Settings → Payment Gateways → INXY Payment Gateway to finalize your settings:
Field
Description
Display Name
What customers see at checkout (e.g., "Pay with Crypto").
API & Secret Key
Found in your INXY Dashboard.
Convert To
Select USD or EUR for processing fiat invoices.
Test Mode
Enable this to use the Sandbox environment for testing.
Setting Up Webhooks
To ensure your invoices are marked as paid automatically, you must configure the Postback URL in your INXY Merchant Dashboard:
- URL Format: https://yourdomain.com/modules/gateways/callback/inxy.php
- Location: Go to Merchant settings → API in the INXY dashboard and paste the URL.
5. Advanced Matching and Underpayment Rules
Crypto transactions can sometimes result in minor amount differences due to network fees. INXY handles this through the config.php file:
- Amount Deviation: By default, the module accepts payments within 1% of the requested amount. For WHMCS, it is recommended to set 'amount_deviation_percentage' = 49 to reduce unnecessary top-up attempts and align with WHMCS's partial payment flow.
- Time Window: Payments must arrive within 2 hours in production (30 minutes in Sandbox) to be automatically matched.
6. Summary of Payment Outcomes
Status
Customer Experience
WHMCS Admin Status
Paid in Full
Invoice shows "Paid".
Order marked as paid.
Overpaid
Extra amount added as credit.
Visible credit in account.
Partially Paid
"Awaiting payment" status.
Balance reduced by amount received.
Expired
"Expired" status on page.
Order remains unpaid.
By implementing INXY, you provide your users with a modern, 24/7 payment rail that settles in seconds, ensuring your hosting or digital business stays ahead of the curve in 2026.
Would you like me to draft a series of social media posts to announce your new crypto payment options to your customers?
