## Update the Customer's business name and tax ID

Use this method to update the Customer's business name and tax ID.

This method returns a `Promise` that resolves with an object containing the following fields:
* `type`: one of either `"success"` or `"error"`
* `session`: only populated when `type` is `"success"`. Contains a [Session](/js/custom_checkout/session_object) instance representing the updated state.
* `error`: only populated when `type` is `"error"`. Contains an object with a string `message` field which can be displayed to your customer.

**Syntax:** `actions.updateTaxIdInfo(...)`

- `taxIdInfo`
  The Customer's tax ID information including the business name and tax ID.

  - `businessName` (nullable string) **required**
    The Customer's business name.

  - `taxId` **required**
    The Customer's tax ID.

    - `type` **required**
      One of [the supported tax ID types](/tax/checkout/tax-ids?payment-ui=embedded-components.md#supported-types)

    - `value` (nullable string) **required**
      The value of the tax ID.

### Update the Customer's business name and tax ID

```jsx
actions.updateTaxIdInfo({
  businessName: 'Acme, Inc.',
  taxID: {
    type: 'eu_vat',
    value: 'DK12345678'
  }
});
```