Get Supported Regions

curl --request GET \
  --url 'https://transaction-tax.api.in.commenda.io/api/v1/registrations/v2/content/supported-regions' \
  --header 'Authorization: Bearer <your_token>'

{
  "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"] }
        ]
      }
    ]
  }
}

GET

api

registrations

content

supported-regions

curl --request GET \
  --url 'https://transaction-tax.api.in.commenda.io/api/v1/registrations/v2/content/supported-regions' \
  --header 'Authorization: Bearer <your_token>'

{
  "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"] }
        ]
      }
    ]
  }
}

Retrieve the list of regions supported for tax registration. Each region includes jurisdiction filter sets that you can pass directly to the Available Jurisdictions 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`)

curl --request GET \
  --url 'https://transaction-tax.api.in.commenda.io/api/v1/registrations/v2/content/supported-regions' \
  --header 'Authorization: Bearer <your_token>'

{
  "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"] }
        ]
      }
    ]
  }
}

Using filter sets

Each region may return multiple jurisdiction_filter_sets. To get all jurisdictions for a region, query the Available Jurisdictions 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.

# 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"]}}'

Available Jurisdictions — Search for jurisdictions using the filter sets
Available Registrations — Get registration options for discovered jurisdictions
V2 Registration Content Overview — Full content API workflow

Registration Content V2 List Available Jurisdictions

Get Started

Registrations

Registrations V2

Corporations

Tax Calculations

Transactions

Address Requirements

Registration Thresholds

Products

Customers

Exemption Certificates

Exemptions

Files

Credentials

Locations

Filings

Webhooks

Response fields

Using filter sets

​Response fields

​Using filter sets

​Related

Response fields

Using filter sets

Related