---
description: >-
  A comprehensive list of the tax category resource's attributes and
  relationships
---

# The tax category object

A tax category object is returned as part of the response body of each successful list, retrieve, create or update API call to the `/api/tax_categories` endpoint.

## Fields

| Field                             | Type       | Description                                                                                                                                                                                         |
| --------------------------------- | ---------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **type**                          | `string`   | `tax_categories`                                                                                                                                                                                    |
| **id**                            | `string`   | The tax category unique identifier                                                                                                                                                                  |
| links.**self**                    | `string`   | The tax category endpoint URL                                                                                                                                                                       |
| attributes.**code**               | `string`   | The tax category identifier code, specific for a particular tax calculator.                                                                                                                         |
| attributes.**sku\_code**          | `string`   | The code of the associated SKU.                                                                                                                                                                     |
| attributes.**created\_at**        | `datetime` | Time at which the resource was created.                                                                                                                                                             |
| attributes.**updated\_at**        | `datetime` | Time at which the resource was last updated.                                                                                                                                                        |
| attributes.**reference**          | `string`   | A string that you can use to add any external identifier to the resource. This can be useful for integrating the resource to an external system, like an ERP, a marketing tool, a CRM, or whatever. |
| attributes.**reference\_origin**  | `string`   | Any identifier of the third party system that defines the reference code.                                                                                                                           |
| attributes.**metadata**           | `object`   | Set of key-value pairs that you can attach to the resource. This can be useful for storing additional information about the resource in a structured format.                                        |
| relationships.**sku**             | `object`   | The associated SKU.                                                                                                                                                                                 |
| relationships.**tax\_calculator** | `object`   | The associated tax calculator.                                                                                                                                                                      |
| relationships.**attachments**     | `array`    | The associated attachments.                                                                                                                                                                         |
| relationships.**versions**        | `array`    | The associated changes.                                                                                                                                                                             |
| meta.**mode**                     | `string`   | The resource environment (can be one of `test` or `live`)                                                                                                                                           |
