Customize your WooCommerce order numbers with a flexible, sequential order numbering system. Add prefixes, suffixes, and order dates to create clean, professional, and easily trackable order numbers. 
<img class="alignnone size-medium wp-image-18734005346046" src="https://woocommerce.com/wp-content/uploads/2025/05/Frame-6632.png?w=840" alt="Advanced Features of Sequential Order Numbers Plugin " width="840" height="468" />
<img class="alignleft wp-image-18734005346052" src="https://woocommerce.com/wp-content/uploads/2025/05/Create-Structured-Custom-Order-Numbers-for-WooCommerce.png?w=800" alt="Create Structured, Custom Order Numbers for WooCommerce" width="300" height="338" />
 
Set Custom Order Number Formats in WooCommerce
Custom Order Numbers for WooCommerce replaces the default WordPress Post IDs with structured and meaningful order numbers. You can define order sequences that match your business needs using letters, numbers, dates, or custom fields. Create formats like WT195, ORD1001, INV2025, or STORE0501 with just a few clicks.
The extension allows you to generate sequential order numbers, apply custom sequences, or reset numbers automatically. You can update existing orders or apply changes only to new ones, giving you complete control over WooCommerce custom order numbers and ensuring clear order tracking across your store.
<img class="alignright wp-image-18734005346057" src="https://woocommerce.com/wp-content/uploads/2025/05/Set-Custom-Prefix-Suffix-or-Start-Number.png?w=800" alt="Set Custom Prefix, Suffix, or Start Number " width="300" height="338" />
 
 Customize Your Order Number Sequence in WooCommerce
Easily manage your order numbers sequence in WooCommerce by creating a clear sequential order that reflects your store workflow. You can add custom prefixes or suffixes, such as WT or EU, to identify departments or regions. 
You can also set a custom starting number, for example 1000 instead of 1, which is helpful when migrating from another platform or extension. 
These customization options make it simple to define order numbers that follow a logical sequence while also meeting internal or legal requirements. Standardizing your order numbering using the extension helps improve clarity, ensure consistency, and simplify order tracking.
<img class="alignleft wp-image-18734005346060" src="https://woocommerce.com/wp-content/uploads/2025/05/Create-Structured-Custom-Order-Numbers-for-WooCommerce-1.png?w=800" alt="Choose Custom Increment for Order Numbers " width="300" height="338" />
 
Choose Custom Increment for WooCommerce Order Numbers
Not all stores want consecutive order numbers increasing by 1. With this extension, you can define a custom increment value for your sequential order numbers. Whether you want to increase order numbers by 5s, 10s, or any other interval, the extension gives you complete control.
Example: 
Instead of #1001, #1002, #1003, you can generate #1005, #1010, #1015, and so on.
<img class="alignright wp-image-18734005346063" src="https://woocommerce.com/wp-content/uploads/2025/05/Auto-Reset-Order-Numbers-at-Regular-Intervals.png?w=800" alt="Auto-Reset Order Numbers at Regular Intervals " width="300" height="338" />
 
Reset WooCommerce Order Numbers Automatically
Choose how often your WooCommerce order numbers reset, whether daily, monthly, or yearly. This helps stores organize orders by time periods, such as quarterly reports or financial cycles, and also keeps order numbers shorter and easier to manage.
<img class="alignleft wp-image-18734005346066" src="https://woocommerce.com/wp-content/uploads/2025/05/Auto-Reset-Order-Numbers-at-Regular-Intervals-1.png?w=800" alt="Use a Separate Order Number Sequence for Free Orders " width="300" height="338" />
 
Use a Separate Order Number Sequence for Free Orders
This WooCommerce sequential order numbers extension lets you maintain a separate order number sequence for free orders, giving you better clarity in tracking and reporting. By separating paid and free orders, you simplify accounting, improve business insights, and avoid confusion when reviewing sales performance.
 
Example:
<ul>
<li>Paid Orders: ORD-1001, ORD-1002</li>
<li>Free Orders: FREE-0001, FREE-0002</li>
</ul>

WebToffee Sequential Order Numbers

Replace random WooCommerce order numbers with sequential numbers, and easily format them using prefixes, suffixes, and custom length settings.

<div class="woo-sc-box alert">Important: This extension facilitates e-invoicing through the external Fattura-Elettronica-API service. It does not provide legal or tax advice. Please consult your accountant to confirm the correct settings for your business.</div>
<div class="woo-sc-box info">This extension requires a <a href="https://fattura-elettronica-api.it/registrazione/" target="_blank" rel="noopener">Fattura-Elettronica API account</a>.</div>
<h2 id="what-is-fattura-elettronica-api-for-woocommerce">What is Fattura Elettronica API for WooCommerce?</h2>
Fattura Elettronica API is a WooCommerce extension that turns your store orders into compliant Italian electronic invoices. It connects your shop to the external Fattura-Elettronica API service, so you can issue, send, and track SDI e-invoices without leaving WordPress.
Designed for Italian businesses selling online, it removes manual invoicing, reduces errors, and saves time on every order.
<h2 id="top-benefits">Benefits</h2>
<ul class="wccom-tick-list-primary">
<li>Save time: create and send e-invoices automatically from WooCommerce orders.</li>
<li>Stay compliant: issue invoices aligned with Italian SDI requirements.</li>
<li>Fewer mistakes: customer and order data flows directly into the invoice.</li>
<li>Clear status tracking: see when invoices are sent, delivered, or if action is needed.</li>
<li>Better customer experience: email the invoice PDF to your buyer.</li>
</ul>
<h2 id="who-is-it-for">Who is it for?</h2>
<ul class="wccom-tick-list-secondary">
<li>Italian companies and professionals who must issue electronic invoices via SDI.</li>
<li>WooCommerce stores that want to automate invoicing and reduce admin work.</li>
<li>Agencies managing multiple Italian WooCommerce stores and looking for a reliable, standards‑aligned solution.</li>
</ul>
<h3 id="how-it-works-simple">How it works</h3>
<ol>
<li>Connect your WooCommerce store to your Fattura-Elettronica API account.</li>
<li>Choose when invoices should be created (e.g. upon order completion).</li>
<li>The extension sends the invoice to the Fattura-Elettronica-API service for SDI delivery.</li>
<li>Invoice status updates come back to your store automatically.</li>
<li>The customer receives the PDF invoice by email when it’s ready.</li>
</ol>
<h2 id="key-features">Features</h2>
<ul>
<li>Seamless API integration with Fattura-Elettronica-API for SDI e-invoicing.</li>
<li>Automatic invoice creation from WooCommerce orders.</li>
<li>Status updates and error messages surfaced in the order timeline.</li>
<li>Customer email with invoice PDF when delivered.</li>
<li>English and Italian localization.</li>
</ul>
<h3 id="why-choose-this-plugin">Why you should choose this extension</h3>
<ul>
<li>Built specifically for Italy’s e-invoice workflow, not a generic invoicing tool.</li>
<li>Keeps your invoicing process inside WooCommerce to reduce context switching.</li>
<li>Clear, simple settings designed for store managers, not developers.</li>
</ul>
<h2 id="requirements">Requirements</h2>
<ul>
<li>WooCommerce installed and active.</li>
<li>An active account with the external Fattura-Elettronica-API service.</li>
<li>PHP 7.4 or higher.</li>
</ul>
<h3 id="support-and-documentation">Support and documentation</h3>
You’ll find setup steps on the extension’s settings page. If you get stuck, reach out to support and we’ll help you configure the connection.

Fattura Elettronica API

Send Italian electronic invoices (fatture elettroniche) from your WooCommerce store to the Italian Agenzia delle Entrate (SDI).

WebToffee Sequential Order Numbers vs Fattura Elettronica API