antubis

This plugin extends WooCommerce and Booster for WooCommerce. It adds a new key “vat_number” to billing address when requested by API call. Also it will auto fill the VAT value when creating a manual order.
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WooCommerce VAT to API

Show VAT number as part of billing address in the WooCommerce API

Abhi

Many countries like Australia, Canada, Singapore and India use GST instead of VAT. This plugin automatically renames VAT and Tax labels to GST across your entire WooCommerce store.
Works everywhere: 
* Cart & Checkout pages 
* Order confirmation pages 
* Email notifications 
* Admin order pages 
* My Account pages
Features: 
* ✅ Zero configuration needed 
* ✅ Compatible with WooCommerce HPOS 
* ✅ Works with all WooCommerce themes 
* ✅ Lightweight and performant 
* ✅ Follows WordPress coding standards

Rename VAT to GST for WooCommerce

Replaces VAT and Tax terminology with GST throughout WooCommerce (emails, cart, checkout, admin, order pages).

WooCommerce VAT to API vs Rename VAT to GST for WooCommerce