Checkout Field Manager for WHMCS

Take full control of your WHMCS checkout experience.

Checkout Field Manager gives you the ability to dynamically control, validate, require, hide, and customize checkout fields based on products, product groups, client groups, and country logic — all without modifying core files.

Built with a clean hook-based architecture, this module delivers powerful flexibility while preserving full compatibility with WHMCS updates.

Overview

By default, WHMCS applies global checkout rules to all products and customers.

Checkout Field Manager allows you to define precise logic rules that control how fields behave during the ordering process.

Reduce friction. Enforce compliance. Improve data accuracy.

All managed from a centralized admin interface.

Key Features

Per-Product & Product Group Rules

• Apply custom field behavior to individual products
• Assign logic across entire product groups
• Configure different requirements per service type

Country-Based Field Logic

• Show or hide fields based on selected country
• Require specific information for certain regions
• Automatically adapt checkout behavior in real time

Client Group Customization

• Apply different checkout rules per client group
• Ideal for resellers, VIP tiers, or restricted accounts

Field Visibility & Requirement Control

• Set any standard WHMCS checkout field to:

  • Required
  • Optional
  • Hidden

• No template modifications required

Conditional Display Logic

• Display fields only when necessary
• Simplify the checkout experience
• Improve overall conversion rates

Validation & Default Value Injection

• Enforce custom validation rules
• Automatically populate default values
• Prevent incomplete or invalid submissions

Stability & Compatibility

• No Core File Edits
• Hook-Based Architecture
• Admin-Controlled Configuration
• Compatible with WHMCS 8.0 and later
• Supports PHP 7.3 – 8.3
• Licensed and Encoded Distribution

Designed for production environments that require long-term reliability and upgrade safety.

Why Use Checkout Field Manager?

Custom checkout logic improves operational efficiency and customer experience.

This module helps you:

• Reduce abandoned orders
• Enforce regulatory or business requirements
• Improve checkout usability
• Prevent incomplete or inaccurate data collection
• Tailor the checkout experience per service type

Whether you provide shared hosting, VPS, dedicated servers, domains, or digital services, this module ensures precise control over how customer information is collected.

Admin Experience

The module includes:

• Structured rule management
• Product and group assignment controls
• Centralized configuration panel
• Clean, intuitive interface

No template overrides. No core modifications. No upgrade conflicts.

Example Use Cases

• Require VAT details only for EU customers
• Hide unnecessary address fields for digital products
• Enforce additional information for dedicated servers
• Apply stricter requirements to high-risk client groups
• Automatically inject predefined values for specific services

Support & Updates

Documentation is included. Ongoing updates are provided to maintain compatibility with future WHMCS releases.