Simplified PHP Invoice / Billing System


A simple and fast invoicing / billing solution using the bootstrap templating system, it enables you to create products and items, create customers, users, invoices, quotes and receipts. It also has some other great features one of which is instant invoice calculations for items, quantity, discounts (fixed or percentage) sub-totals, shipping, Taxes / VAT and totals with no effort what so ever! It can be used for any type of invoicing from eCommerce invoicing, general in-house invoicing to product and services invoices. There are plenty more features within the system so checkout the demo or have a look below to see its full potential.

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Product Features

  • Super easy to use for anyone!
  • Responsive layout so able to use the system on Desktops, Tablets and Mobile Devices.
  • Fully Customisable by editing templates and Stylesheets.
  • Ability to create invoices, quotes and receipts.
  • Set invoices as either “Open” or “Paid”.
  • Set invoice start date and due date.
  • Unique invoice numbers and prefix on invoices (auto increase)
  • Can remove TAX / VAT when creating invoices and override default system settings for that invoice only.
  • You can manually create invoice items or select from your product / item inventory.
  • Manually enter custom billing / shipping details (auto-copied) or select from your customer database on invoices.
  • Ability to send invoices directly to customers, each type: invoice, quote or receipt which sends unique email content.
  • Can set invoices / shipping notes to invoice.
  • Auto PDF generation of invoices which can be emailed or downloaded.
  • Email content can be overridden when creating invoices to override default email content.
  • Setup pre-defined products / items with name, description and price.
  • Set pre-defined customers to be used to quickly insert into invoices.
  • User management to allow you to create system users to login and use the system.
  • Generate CSV spreadsheets of all invoices for download.
  • Configuration file to configure your system such as business details, tax/vat details, payment information etc..
  • Enable or Disable TAX / VAT on the system.
  • Set TAX / VAT rates.
  • Can set if the invoice products / items include TAX / VAT or exclude TAX / VAT.

System Requirements

  • MySQL 5.x, MySQLi Extension
  • PHP 5.x, PHP 5.0 – 5.2, PHP 5.3, PHP 5.4, PHP 5.5

Change Log

Version 1.2 (coming soon)

  • [TODO] New admin template layout.
  • [TODO] Admin landing page with stats and charts.
  • [TODO] Fix some issues found within mobile version.
  • [TODO] Multiple languages for all templates which can be switched in admin.
  • [TODO] Add payment terms (select from terms or enter manually) under order notes.

Version 1.1.1

  • [FIXED] Fixed header navigation to use relative paths.
  • [FIXED] Fixed JS / CSS Paths to use relative paths.
  • [FIXED] Fixed issue with system causing issues when PHP error handling was on showing constants already defined.
  • [FIXED] Fixed character encoding.

Version 1.1

  • [UPDATED] Updated mysqli Queries to prepare statements to better prevent the possibility of SQL Injections.
  • [REMOVED] Removed new mysqi connections within all actions in response file as were not needed.
  • [FIXED] Fixed response messages that were out of the container and causing layout issues.
  • [ADDED] Invoice Type: Added 3 seperate email bodies for each invoice type.
  • [ADDED] Custom email body option above create invoice, overrides defaults for that invoice.
  • [FIXED] Fixed Generate CSV so orders are not separated but onto 1 line with all invoice data.
  • [ADDED] Remove VAT checkbox to remove VAT from invoice and product sub-totals.
  • [FIXED] Invoice discount issue when editing invoice.
  • [ADDED] Enable system calculate VAT ex VAT and not VAT included.
  • [ADDED] Add VAT for shipping cost.
  • [ADDED] Make QTY Input wider to displays larger digits.
  • [ADDED] Custom email body option above create invoice, overrides defaults for that invoice.
  • [ADDED] Added ability to modify users.
  • [ADDED] Added password strength functionality.
  • [ADDED] Added Name field to users.
  • [UPDATED] Login / User registration and User update updated.

Version 1.0

  • [ADDED] Ability to create invoices.
  • [ADDED] Ability to manage invoices.
  • [ADDED] Added functionality to email / download invoice.
  • [ADDED] Added functionality to calculate invoice totals.
  • [ADDED] Added functionality for VAT/TAX (inc/ex) enable / disable.
  • [ADDED] Added shipping cost and calculations.
  • [ADDED] Ability to create customers.
  • [ADDED] Ability to manage customers.
  • [ADDED] Ability to create items / products.
  • [ADDED] Ability to manage items / products.
  • [ADDED] Added user management to access system.
  • [ADDED] Generate and download customer / order CSV.
  • [ADDED] Order statuses open / paid.
  • [ADDED] Configuration file to configure system settings. (see docs)

Vendor Information

  • Store Name: hostandname
  • Vendor: hostandname
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