# Tax categories

Create a tax category for an [SKU](https://docs.commercelayer.io/core-api-reference/skus) that has special taxation. Specify a valid tax `code` for the associated [tax calculator](https://docs.commercelayer.io/core-api-reference/tax_calculators).

{% hint style="warning" %}
Currently supported via [Avalara](https://docs.commercelayer.io/core-api-reference/avalara_accounts), [Stripe Tax](https://docs.commercelayer.io/core-api-reference/stripe_tax_accounts), and [Taxjar](https://docs.commercelayer.io/core-api-reference/taxjar_accounts) integrations only.
{% endhint %}

<details>

<summary>Data model</summary>

Check the related [ER diagram](https://commercelayer.io/docs/data-model/tax-calculation) and explore the flowchart that illustrates how the tax category resource relates to the other API entities.

</details>