Wega Billing Term Change for WHMCS allows hosting providers to give clients a secure, self-service way to change the billing cycle of their services directly from the WHMCS Client Area.

Instead of requiring clients to open a support ticket whenever they want to move from monthly to annual billing, or from annual billing to a longer or shorter term, the addon can handle the change automatically according to the rules configured by the administrator.

The addon is designed to work safely with both existing services and new pending orders, while keeping the related WHMCS service, recurring amount, and eligible unpaid invoice synchronized.

Key Features

• Client Self-Service Billing Term Changes
  Clients can change the billing cycle of eligible services directly from the Client Area.

• Flexible Billing Cycle Control
  Support for standard WHMCS recurring billing cycles:

  • Monthly
  • Quarterly
  • Semi-Annually
  • Annually
  • Biennially
  • Triennially

• Configurable Change Direction
  Administrators can allow:

  • Longer billing terms only
  • Shorter billing terms only
  • Any enabled billing term

• Existing Renewal Invoice Support
  If an unpaid renewal invoice has already been generated, the addon can update the existing invoice instead of requiring a new invoice.

• New Order / Pending Service Support
  Clients with a new pending service and an unpaid initial order invoice can change the billing term before making payment.

• Automatic Invoice Recalculation
  The related service line on an eligible unpaid invoice is updated to reflect the newly selected billing term while keeping the same invoice.

• Automatic Service Synchronization
  The WHMCS service billing cycle and recurring amount are updated together with the invoice to keep billing information consistent.

• Multi-Currency Support
  The addon automatically detects the client's WHMCS currency and uses the corresponding product pricing configured in WHMCS.

• Configurable Options Support
  Pricing calculations can include configurable options associated with the service, including quantity-based options.

• Setup Fee Support
  For eligible initial orders, the addon can take the setup fee for the selected billing cycle into account when calculating the first payment amount.

• Product-Level Rules
  Administrators can choose which recurring products support billing term changes and which billing cycles are available for each product.

Built-In Billing Protection

Wega Billing Term Change includes multiple safeguards designed to prevent unsafe invoice or service changes.

Depending on the situation, the addon can prevent automatic changes when:

• The invoice has already been paid
• A payment or transaction has already been applied
• Credit has been applied to the invoice
• The related invoice cannot be safely identified
• The service has an active cancellation request
• The service is linked to a subscription that could conflict with the new billing cycle
• Custom pricing or promotional pricing requires manual review
• Required pricing for the selected billing cycle is unavailable

These safeguards help reduce the risk of billing inconsistencies between the WHMCS service and invoice.

Administration Interface

The addon provides a dedicated administration interface with sections for:

• Dashboard
• Products
• Requests
• Settings
• Logs

Administrators can review billing term changes, manage product rules, configure addon behavior, and inspect activity records from one place.

Requests History

Each billing term change can be recorded with information such as:

• Client
• Service
• Previous billing cycle
• New billing cycle
• Previous amount
• New amount
• Currency
• Status
• Date
• IP address

Client and service information can be accessed directly from the Requests interface for easier administration.

Data Retention & Pagination

Built-in controls allow administrators to configure:

• Requests retention period
• Logs retention period
• Requests displayed per page
• Logs displayed per page

Retention rules can automatically remove records older than the configured number of days, while server-side pagination helps maintain good performance when a large number of records exists.

Multi-Language Support

The addon includes separate language systems for the Client Area and Administration Area.

Language files are organized under:

/lang/
/lang/admin/

This allows both client-facing and administrator-facing text to follow the active WHMCS language independently.

RTL layouts are supported for right-to-left languages such as Arabic and Persian.

Theme Compatibility

The addon is designed to work with standard WHMCS templates as well as modern and customized themes.

Compatibility includes support for environments based on templates such as:

• Twenty-One
• Six
• Lagom
• Custom WHMCS themes

The Client Area integration uses WHMCS hooks with additional compatibility fallbacks to reduce dependency on a specific template structure.

Designed for WHMCS Hosting Businesses

Wega Billing Term Change is useful for hosting companies that want to offer clients more flexibility without requiring staff to manually edit services and invoices every time a billing period needs to change.

It can be used with services such as:

• Shared Hosting
• Reseller Hosting
• VPS Hosting
• Dedicated Hosting
• Other recurring WHMCS products

By automating eligible billing term changes while applying safety checks around invoices and service pricing, the addon helps reduce repetitive support work and provides clients with a more convenient billing experience.