0v99com

ZeroV99 Tax Number is a WooCommerce extension that seamlessly integrates a Tax Identification Number (TIN) field into your store’s checkout process and billing addresses. 
Designed for businesses that need to collect valid tax IDs (such as NIF, CIF, VAT, or similar) for invoicing, tax compliance, or B2B transactions.
<h3>Features</h3>
Tax Number Field Integration 
✔ Adds a configurable tax identification field (TIN) to the WooCommerce checkout. 
✔ Displays the field in billing addresses (customer account + admin order view). 
✔ Compatible with both individuals and businesses (B2B/B2C).
Data Management & Compliance 
✔ Stores tax IDs as order meta and user meta for invoicing and compliance. 
✔ Includes a full uninstall script (removes all plugin data: meta, options).
Flexibility & Compatibility 
✔ Works with block-based and classic checkout templates. 
✔ Elementor-compatible – no conflicts with page builders. 
✔ Multi-language ready (includes .pot file for translations).
Customization 
✔ Custom placeholder text for the TIN field (via plugin settings). 
✔ Custom billing order fields (vía pluign settings).

ZeroV99 Tax Number

Add a configurable tax identification number (TIN) field to WooCommerce, designed for invoicing, tax compliance, or B2B transactions worldwide

devikit

The “NIP Field for WooCommerce” plugin adds a NIP field to the WooCommerce order form, which is automatically saved in order details and in the order confirmation email.
<h4>Features</h4>
<ul>
<li>Adds NIP field to WooCommerce checkout above existing “Company Name” field</li>
<li>Full support for both traditional and Gutenberg block checkout</li>
<li>Compatible with WooCommerce High-Performance Order Storage (HPOS)</li>
<li>Optional validation: 10 digits</li>
<li>Field can be required or optional (configurable in settings)</li>
<li>Saves NIP field value to order details (admin panel)</li>
<li>Saves NIP field value to order details in customer panel (My Account)</li>
<li>Saves NIP field value to WooCommerce order confirmation email</li>
</ul>
<h4>Pro Version</h4>
A Pro version is also available with additional features:
<ul>
<li>Automatic company data retrieval after entering NIP</li>
<li>Auto-filling “Company Name” field with GUS data</li>
<li>Auto-filling address fields with GUS data</li>
<li>Saving GUS data to order data</li>
</ul>
<a href="https://devikit.pl/produkt/pole-nip-dla-woocommerce-pro/" rel="nofollow ugc">Learn more about Pro version</a>

NIP Field for WooCommerce

Adds NIP field to WooCommerce checkout with validation and order storage capabilities.

ZeroV99 Tax Number vs NIP Field for WooCommerce