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Prerequisites

Make sure you have:
  • WHMCS version 7.10 or higher.
  • PHP version 7.2 or above.
  • cURL and JSON enabled on your server.
  • A valid UPITranzact Merchant Account with API Key and Secret Key.

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Step 1: Download the Plugin

Download the latest version of the UPITranzact WHMCS plugin: 👉 Download Plugin

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Step 2: Upload Files to WHMCS

  1. Unzip the downloaded plugin file.
  2. Upload the contents to your WHMCS installation directory: 
    /your-whmcs-root/modules/gateways/
/your-whmcs-root/modules/gateways/callback/
  3. Ensure the following files are uploaded:
    • upitranzact.php → /modules/gateways/
    • upitranzact_callback.php (callback handler) → /modules/gateways/callback/

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Step 3: Activate the Gateway

  1. Log in to your WHMCS Admin Panel.
  2. Navigate to Setup → Payments → Payment Gateways.
  3. Click the “All Payment Gateways” tab.
  4. Find and activate UPITranzact.
  5. Enter your:
    • Merchant Id
    • API Key
    • Secret Key
  6. Click Save Changes.

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Step 4: Go Live

  1. Disable Test Mode.
  2. Use live API credentials.
  3. Confirm that payments are being successfully received and invoices are being marked as paid.
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