> Portal Navigation: > > - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version. > - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages). > - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`). > - Top-level index of all portals: https://dev.wix.com/docs/llms.txt > - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt ## Resource: TaxGroups ## Article: Introduction ## Article Link: https://dev.wix.com/docs/velo/apis/wix-billing-v2/tax-groups/introduction.md ## Article Content: --- title: Introduction --- # Introduction The Tax Groups API allows you to create and manage tax groups to categorize products based on distinct tax treatments. Use the Tax Groups API together with the [Tax Regions API](https://dev.wix.com/docs/velo/api-reference/wix-billing-v2/tax-regions.md) and the [Tax Calculation API](https://dev.wix.com/docs/velo/api-reference/wix-billing-v2/tax-calculation.md) to customize the application of tax for your business. To use the Tax Groups API, import `{ taxGroups }` from the `wix-billing.v2` module: ``` javascript import { taxGroups } from 'wix-billing.v2'; ``` ## Terminology - **Tax group**: A group of products that share the same tax treatment. Assign tax groups manually to your products with [Update Product](https://dev.wix.com/docs/velo/api-reference/wix-stores-v2/products/update-product.md). - **Default tax group**: A predefined tax group provided by an app, for example Wix Stores, and is the default tax group automatically assigned to products imported from that app's catalog.