Billing & Invoicing

Allow client to generate their own Renewal Invoice (Open Source)

Realiza cobros a tus clientes sin necesidad de volver a introducir la tarjeta y automático.

Accept payments with the payment service Alipay via Stripe.com in your WHMCS

Update recurring price when rates are updated for currency

Emite comprobantes fiscales en Argentina (ARCA/AFIP)

Generuje kod QR dla faktury

This extension allows you to easily start accepting Bitcoin payments in your WHMCS using BTCPay Server — a free, self-hosted and open-source Bitcoin payment gateway.

This addon rewards your clients with an automatic X% bonus on any deposit of $X or more

Multi-standard e-Invoicing, Payment Codes and Statement Processing

Recover lost revenue in WHMCS by automatically sending personalized abandoned cart reminders and tracking results with a powerful admin dashboard.

A WHMCS addon module that lets logged-in clients view and export (CSV/PDF) a report of their invoices joined against the services those invoices billed for — filterable by date range, service, and invoice status

Manage your invoices simply and easily

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

Gateway no fees Addon

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

Remind your clients before cancelling service

Support the self-service renewal of domain name, virtual host, VPS / independent server and additional services in advance. Users can choose the renewal duration and use the discount code.

Auto Pay Renewal With Credit for WHMCS auto-renews services from client wallet funds—ensuring uninterrupted service with full user control.

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".