Billing & Invoicing

This addon provides you with an ability to generate, export and import mass promotion codes.

Design your WHMCS invoices and quotes in a more professional and full control

This module helps you restrict gateways to specific countries or/and based on minimum order amount

Easily replace the default invoice with this fully responsive, enhanced version

This WHMCS addon module changes the invoice date to be the same date as the due date for automatically generated invoices by cron and invoices initiated from the admin area for individual clients created by selecting "Generate Due Invoices".

Docsaway mailing platform prints and posts PDF documents from multiple worldwide locations. And now, integrating mailing direct from WHMCS via Docsaway is a breeze thanks to a this new module.

Provide payment methods only for certain countries or customers.

This module will allow you to provide OneCard payment for "onecard.net" as payment option to your custommers

Credit balance expiration will check all clients credit balance date and if a client credit balance reach the expiry date that the admin setup in the credit balance expiration setting

e-comercial.pt WHMCS Module

PayTabs is a company aiming to revolutionize online payments by providing simple and trusted Payment Processing Solutions

YOUR GATWAY TO GST compliance, by creating your invoices as per the Government norms.

Allow Clients to cancel fund invoices & automated cancellations of fund invoices

Automatically synchronize payment date with service (re)activation date

UDSWITCH is a cloud based VoIP Softswitch platform for service providers, wholesale carriers, Retail, Calling card providers, ISP and MVNO operators.

Create custom data and custom fields for old invoices also modify them.

This module will handle automatic cancellation of invoices when a hosting is cancelled.

Allow clients to both see their Credit Balance, Credit history and Transaction History straight from the client area

Easily allocate payments from FNB transaction exports, Or potentially any CSV file

Avalara AvaTax for WHMCS is the all-in-one Address Verification and Tax Calculation module for WHMCS.