# Set the tax number

`PUT https://evohub.io/api/v1/billing/tax-details`

Part of the [Billing API](https://docs.evohub.io/billing.md) reference · operationId `setTaxId`.

Replaces the tax number on file, filed under the type the
organization's country uses. An empty `tax_id` removes it. To
change the address or entity type too, set the billing details
instead.

Answers with the tax details as saved.

Requires the `billing:profile:write` scope.

## Authorization

Any one of:

- `bearerKey`
- `headerKey`

Where:

- `bearerKey`: HTTP Bearer — An EvoHub API key (`evohub_…`) as a bearer token.
- `headerKey`: API key in the header `X-API-Key` — An EvoHub API key (`evohub_…`).

## Request body (required)

Content type: `application/json`

Type: `object`

- `tax_id` (string): The tax registration number, or `""` to remove it.

## Responses

### 200 — The tax details as saved.

Content type: `application/json`

Type: `object`

- `data` (TaxDetails)
  - `country` (string)
  - `tax_id` (string)
  - `tax_id_type` (string): Left out when there is no number.
  - `editable` (boolean): Whether a tax number can be filed for this country.

### 400 — The body is not JSON (`INVALID_BODY`), or the number was not accepted — usually one that does not match its country's format (`TAX_ID_REJECTED`).

Content type: `application/json`

Type: `Error`

- `error` (object, required)
  - `code` (string, required, example `STATEMENT_NOT_FOUND`)
  - `message` (string, required, example `No statement for that period.`)
  - `request_id` (string)

### 401 — No API key was sent, or it is unknown, revoked or expired (`UNAUTHORIZED`).

Content type: `application/json`

Type: `Error`

- `error` (object, required)
  - `code` (string, required, example `STATEMENT_NOT_FOUND`)
  - `message` (string, required, example `No statement for that period.`)
  - `request_id` (string)

### 403 — The key lacks the scope this endpoint needs (`FORBIDDEN`).

Content type: `application/json`

Type: `Error`

- `error` (object, required)
  - `code` (string, required, example `STATEMENT_NOT_FOUND`)
  - `message` (string, required, example `No statement for that period.`)
  - `request_id` (string)

### 409 — No billing details or card have been saved yet (`NO_PAYMENT_SETUP`), or a number was given while the organization's country is not known (`COUNTRY_UNKNOWN`) — set the billing details first.

Content type: `application/json`

Type: `Error`

- `error` (object, required)
  - `code` (string, required, example `STATEMENT_NOT_FOUND`)
  - `message` (string, required, example `No statement for that period.`)
  - `request_id` (string)

### 429 — Too many requests (`RATE_LIMITED`). Wait for `Retry-After` seconds.

Headers:

- `Retry-After` (integer): Seconds to wait before retrying.

Content type: `application/json`

Type: `Error`

- `error` (object, required)
  - `code` (string, required, example `STATEMENT_NOT_FOUND`)
  - `message` (string, required, example `No statement for that period.`)
  - `request_id` (string)

### 503 — Payments are not enabled on this environment (`PAYMENTS_DISABLED`).

Content type: `application/json`

Type: `Error`

- `error` (object, required)
  - `code` (string, required, example `STATEMENT_NOT_FOUND`)
  - `message` (string, required, example `No statement for that period.`)
  - `request_id` (string)

## Example request

```bash
curl -X PUT 'https://evohub.io/api/v1/billing/tax-details' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer <TOKEN>' \
  -d '{
  "tax_id": "IE1234567T"
}'
```