Modified Invoice Extended is a WHMCS invoice editor that lets you add invoice items, edit invoice items and cancel invoice items from the WHMCS Manage Invoice page. Modify an invoice, edit unpaid invoice items or edit draft invoice items in one window.

Every invoice line item keeps the item type and related ID that WHMCS itself would use. So WHMCS still renews the service, enables the domain addon or applies the credit when the invoice is paid.

Add a missed renewal, bill the next billing period of a service, or add a domain renewal, domain registration or domain transfer to an invoice. Add a domain addon such as DNS Management, Email Forwarding or ID Protection, a product addon, an upgrade, add funds, a late fee or a custom invoice item.

Add a promotion to an invoice item after the order, apply promo code to an existing invoice, or apply a coupon to an invoice. Only the promotions that apply are offered. Change the invoice date, change the invoice tax rate and change invoice status, and the totals are recalculated at once.

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Admin Features:

• Modify Invoice Items Window
• Add Invoice Items:
  • Hosting / Service Renewal
  • Product Addon Renewal
  • Domain Renewal
  • Domain Registration
  • Domain Transfer
  • Domain Addon: DNS Management
  • Domain Addon: Email Forwarding
  • Domain Addon: ID Protection
  • Upgrade / Downgrade Order
  • Pay Another Unpaid Invoice
  • Add Funds Invoice Item
  • Late Fee Invoice Item
  • Custom Invoice Item
• Edit Invoice Line Items:
  • Edit Invoice Description
  • Edit Invoice Amount
  • Edit Taxed Setting
• Cancel Invoice Items Safely
• Change Invoice Status:
  • Process as Paid When Nothing Is Owed
  • Cancel Unpaid Invoices Always
  • Mark Refunded After a Partial Refund
  • Payment Pending, Collections, Cancelled
  • Publish a Draft Invoice
  • Any Status From Any Status
• Next Billing Period Detection
• Correct Item Type and Related ID
• Configurable Option Lines Included
• Item Descriptions in Client Language
• Invoice Promotions:
  • Hosting Promotion
  • Addon Promotion
  • Domain Promotion
  • Only Applicable Promotions Offered
  • Discount Capped at Promotion Value
• Change Invoice Date
• Change Invoice Tax Rate
• Recalculate Invoice Totals Automatically
• Edit Links Beside Invoice Items
• Check for Update Button

Security:

• Draft and Unpaid Invoices Only
• Paid Invoices Shown Read-Only
• Edits Published WHMCS 9.1 Invoices Too
• Lines WHMCS Cancelled Shown as Cancelled
• Manage Invoice Permission Required
• Payments and Credit Protected
• Every Change in One Transaction
• Activity Log Entry per Change

What The Module Works With:

• WHMCS Manage Invoice Page
• Blend Admin Template
• Blend New Admin Template
• WHMCS Promotions and Coupons
• WHMCS Late Fee Settings
• WHMCS 9 Credit Notes

General Info:

• WHMCS 8.x, 9.0 and 9.1
• PHP 8.1 to 8.4
• ionCube Loader v13, v14 or v15
• Automatic Updates via Daily Cron
• No Client Area Changes
• 5-Day Free Trial

Available Pricing Models:

• Monthly: $̵7̵.̵5̵0̵ > $6.00
• Annual: $̵2̵9̵ > $23.20
• One-Time: $̵7̵5̵ > $60
• Open Source: $̵2̵2̵9̵ > $183.20

Use it as a WHMCS invoice editor, WHMCS invoice item editor or WHMCS extended invoice editor. It covers WHMCS edit invoice, WHMCS modify invoice, WHMCS add invoice item and WHMCS change invoice status.

It also works as an invoice editor for WHMCS, a WHMCS 9 invoice editor, an invoice line editor and an invoice item manager. Add item to invoice, add line item to invoice, delete invoice item, add upgrade to invoice, add late fee to invoice, add promotion to invoice and apply coupon to invoice.

Correct an invoice before it is paid: change invoice amount, change invoice description, change invoice item amount, update invoice items, adjust invoice amounts or remove invoice items. Add a late fee to an invoice, or mark invoice paid when nothing is left to pay.

A WHMCS invoice customization tool, like Invoice Customization Extended, that lets you edit invoice items for WHMCS.