> ## Documentation Index
> Fetch the complete documentation index at: https://docs.commenda.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Get Supported Regions

> Get the list of supported regions and their jurisdiction filters for tax registrations

Retrieve the list of regions supported for tax registration. Each region includes jurisdiction filter sets that you can pass directly to the [Available Jurisdictions](/engine/indirect-tax/registrations/v2/content/available-jurisdictions-POST) endpoint to discover registerable jurisdictions within that region.

Use this endpoint to build region-based navigation in your UI or to determine which jurisdiction filters to apply when searching for available registrations.

## Response fields

| Field                                            | Type   | Description                                                                         |
| ------------------------------------------------ | ------ | ----------------------------------------------------------------------------------- |
| `regions`                                        | array  | List of supported regions                                                           |
| `regions[].region_id`                            | string | Unique identifier for the region (e.g., `US`, `EU`, `CA`, `GB`)                     |
| `regions[].region_name`                          | string | Human-readable name (e.g., "United States", "European Union")                       |
| `regions[].jurisdiction_filter_sets`             | array  | One or more filter sets to use when querying available jurisdictions                |
| `regions[].jurisdiction_filter_sets[].countries` | array  | ISO country codes to filter by                                                      |
| `regions[].jurisdiction_filter_sets[].states`    | array  | State or province codes to filter by                                                |
| `regions[].jurisdiction_filter_sets[].types`     | array  | Jurisdiction types to filter by (e.g., `STATE_OR_PROVINCE`, `COUNTRY`, `TRADEBLOC`) |

<RequestExample>
  ```bash cURL theme={null}
  curl --request GET \
    --url 'https://transaction-tax.api.in.commenda.io/api/v1/registrations/v2/content/supported-regions' \
    --header 'Authorization: Bearer <your_token>'
  ```
</RequestExample>

<ResponseExample>
  ```json 200 theme={null}
  {
    "data": {
      "regions": [
        {
          "region_id": "US",
          "region_name": "United States",
          "jurisdiction_filter_sets": [
            { "countries": ["US"] }
          ]
        },
        {
          "region_id": "EU",
          "region_name": "European Union",
          "jurisdiction_filter_sets": [
            { "types": ["TRADEBLOC"] },
            {
              "countries": ["AT", "BE", "BG", "CY", "CZ", "DE", "DK", "EE", "ES", "FI", "FR", "GR", "HR", "HU", "IE", "IT", "LT", "LU", "LV", "MT", "NL", "PL", "PT", "RO", "SE", "SI", "SK"],
              "types": ["COUNTRY"]
            }
          ]
        },
        {
          "region_id": "CA",
          "region_name": "Canada",
          "jurisdiction_filter_sets": [
            { "countries": ["CA"] }
          ]
        },
        {
          "region_id": "GB",
          "region_name": "United Kingdom",
          "jurisdiction_filter_sets": [
            { "countries": ["GB"], "types": ["COUNTRY"] }
          ]
        }
      ]
    }
  }
  ```
</ResponseExample>

## Using filter sets

Each region may return multiple `jurisdiction_filter_sets`. To get all jurisdictions for a region, query the [Available Jurisdictions](/engine/indirect-tax/registrations/v2/content/available-jurisdictions-POST) endpoint once per filter set and combine the results.

For example, the EU region returns two filter sets — one for trade bloc-level registrations (Union OSS, Non-Union OSS, IOSS) and another for individual EU member country registrations.

```bash theme={null}
# Get EU trade bloc registrations
curl --request POST \
  --url 'https://transaction-tax.api.in.commenda.io/api/v1/registrations/v2/content/available-jurisdictions' \
  --header 'Authorization: Bearer <your_token>' \
  --header 'Content-Type: application/json' \
  --data '{"filters": {"types": ["TRADEBLOC"]}}'

# Get EU member country registrations
curl --request POST \
  --url 'https://transaction-tax.api.in.commenda.io/api/v1/registrations/v2/content/available-jurisdictions' \
  --header 'Authorization: Bearer <your_token>' \
  --header 'Content-Type: application/json' \
  --data '{"filters": {"countries": ["DE", "FR", "IT"], "types": ["COUNTRY"]}}'
```

## Related

* [Available Jurisdictions](/engine/indirect-tax/registrations/v2/content/available-jurisdictions-POST) — Search for jurisdictions using the filter sets
* [Available Registrations](/engine/indirect-tax/registrations/v2/content/available-registrations-POST) — Get registration options for discovered jurisdictions
* [V2 Registration Content Overview](/engine/indirect-tax/registrations/v2/content/content-v2) — Full content API workflow