Accounting for WHMCS Accounting for WHMCS

Developed By Procyon Web Sarl-S

Compatible with WHMCS v8.5 Accounting module integrates financial data from WHMCS into It allows you to automate the hassle of creation of tax invoices and track your business' financials. It can export and keep information up to date of client details, invoices, transactions and refunds with

The module allows you to choose how and when the data is synchronized or an invoice is created. You also have the option to manually sync data to and create invoices. The module has ability to link all your products from WHMCS to and define your default ones.

Save time by automating your administrative processes!

  • Export Manually:

    • Clients
    • Invoices
    • Transactions
  • Export Automatically:

    • Clients
    • Invoices
    • Transactions
  • Manage Relations:

    • Clients
    • Products
    • Domains
    • Addons
  • Relation management for products

  • Define Automatic Export Settings of:

    • Invoices
  • Define default items of:

    • Products Item
    • Addons Item
    • Domains Item
    • Gateway Fee Account
  • Define payment accounts

  • Multi-Currency Support

  • Refunds Support

  • Multi-Language Support


Contact us if you have multiple WHMCS instances, we can offer you a discount on multiple licenses:


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Version Compatibility

Compatible with WHMCS v8.5

Full Version Compatibility

  • Selected versions of WHMCS v8.5
        8.5.0 - 8.5.1
  • All versions of WHMCS v8.4
  • All versions of WHMCS v8.3
  • All versions of WHMCS v8.2
  • All versions of WHMCS v8.1
  • All versions of WHMCS v8.0

System Requirements

  • PHP 7.3+ & ionCube 10
  • account

* Requirements listed are in addition to the WHMCS default system requirements.

Support for this product

The best place to start if you need help with a specific product is to contact the developer. All WHMCS Marketplace developers have both a website and support URL listed.

Developed By Procyon Web Sarl-S


v1.4.0 Released October 7th, 2022

Latest Version


  • Upload generated invoice to Billy from WHMCS
  • Send EAN to Billy (custom field selectable)
  • Fallback to Offline license check


Previous Versions

v1.3.0 Released August 21st, 2022

View/hide detailed changelog


  • Ability to setup products in billy for WHMCS Addons
  • Domain fee default product
  • Release to Marketplace


v1.2.0 Released August 15th, 2022

View/hide detailed changelog


  • Ability to approve and add payments from WHMCS


  • Error when creating invoice with discounts
  • Invoice date
  • Only create invoices on the payment gateways in settings


v1.1.0 Released July 22nd, 2022

View/hide detailed changelog


  • API Call logs
  • Manual invoice numbering (using WHMCS ids)


  • Save payments on approved invoices
  • Settings page fixes


v1.0.0 Released July 19th, 2022

View/hide detailed changelog


  • Initial version of the addon


See also

w2x for Xero

Synchronise your invoices, Contacts, Products and Payments with Xero

QuickBooks Online For WHMCS

Integrate your financial data stored in WHMCS into QuickBooks Online.

KashFlow Accounting

Automatically transfer your billing & transaction history to KashFlow

Zero Invoice Management

Avoid sending notifications or creation of 0€ Invoices

Payment Gateway Fees

Payment Gateway Fees