ZPayNG Business Payment Gateway integrates seamlessly into your WHMCS billing system, letting your clients pay invoices in Nigerian Naira (NGN) without leaving your platform.

Once a client clicks Pay Now, they are taken to a secure ZPayNG payment page. After payment is confirmed, the invoice is automatically marked as paid and the client is redirected back to their account — no manual intervention required.

FEATURES

Native WHMCS gateway — appears alongside other payment methods on the invoice page
Automatic invoice payment — ZPayNG confirms payment and updates the invoice instantly via callback
Amount validation — payment amount is verified against the invoice total before the invoice is marked paid
Duplicate payment protection — the same transaction reference cannot be applied twice
Professional payment UI — branded payment button with invoice number, amount, and reference displayed
Secure callback handler — uses WHMCS native gateway functions (checkCbInvoiceID, checkCbTransID, addInvoicePayment)
Debug mode — optional activity log entries for every step of the payment flow
Test mode — toggle for development and staging environments
Auto-redirect — client is redirected back to their invoice page 3 seconds after payment confirmation

REQUIREMENTS

WHMCS 7.0 or higher
PHP 7.0 or higher
cURL enabled on your server
Active ZPayNG Business account (register at business.zpayng.com)
NGN (Nigerian Naira) currency configured in WHMCS

HOW TO INSTALL

Download the module zip and extract it
Upload the modules/ folder to your WHMCS root directory (merge, do not replace)
Log in to WHMCS Admin → Setup → Payment Gateways → All Payment Gateways
Find ZPayNG Business and click Activate
Enter your ZPayNG email address and authorization token
Save changes — the gateway is now live on your invoice pages

Your ZPayNG email and token are found in your ZPayNG Business dashboard under Profile → API Access.

IMPORTANT: This module currently supports NGN (Nigerian Naira) only. Invoices in other currencies will display a notice instead of the payment button.

SUPPORT

For help, visit: https://business.zpayng.com/business/home/contact-us

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Version Compatibility

Compatible with WHMCS v8.13

Full Version Compatibility

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

System Requirements

Active ZPayNG Business account (register at business.zpayng.com)
NGN (Nigerian Naira) currency configured in WHMCS
cURL enabled on your server
PHP 7.0 or higher
ZPayNG registered email address (used as gateway identifier)
ZPayNG API key / authorization token (found in ZPayNG Business dashboard under Profile → API Access)
Your server's IP address whitelisted in your ZPayNG Business account

* Requirements listed are in addition to the WHMCS default system requirements.

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 D-N Developers Technologies Company Ltd

Changelog

v1.0.0 Released September 2nd, 2026

Latest Version

1.0.0

Initial release

ZPayNG Business Payment Gateway for WHMCS