## Managing Customer Tax Information

This section outlines how to store, validate, and display customer tax identification numbers within Stripe Billing and Invoicing.

### Customer Tax IDs

Displaying a customer's tax ID on invoice documents is a common requirement. Stripe allows you to add tax IDs to customer profiles, which will then appear in the header of invoice and credit note PDFs.

#### Supported Tax ID Types

Stripe supports various Tax ID types across different regions. The following table provides a sample of supported types and their impact on tax calculation:

| Country                 | Enum            | Description                                      | Example         | Impact in Tax Calculation |
| :---------------------- | :-------------- | :----------------------------------------------- | :-------------- | :------------------------ |
| Albania                 | `al_tin`        | Albania Tax Identification Number                | `J12345678N`    | Yes                       |
| Andorra                 | `ad_nrt`        | Andorran NRT number                              | `A-123456-Z`    | No                        |
| Angola                  | `ao_tin`        | Angola Tax Identification Number                 | `5123456789`    | No                        |
| Argentina               | `ar_cuit`       | Argentinian tax ID number                        | `12-3456789-01` | No                        |
| Armenia                 | `am_tin`        | Armenia Tax Identification Number                | `02538904`      | Yes                       |
| Aruba                   | `aw_tin`        | Aruba Tax Identification Number                  | `12345678`      | Yes                       |
| Australia               | `au_abn`        | Australian Business Number (AU ABN)              | `12345678912`   | Yes                       |
| Austria                 | `eu_vat`        | European VAT number                              | `ATU12345678`   | Yes                       |
| ...                     | ...             | ...                                              | ...             | ...                       |

**Note:** The "Impact in Tax Calculation" column indicates whether providing this tax ID is relevant for Stripe Tax to automatically calculate taxes.

### Account Tax IDs

In addition to customer tax IDs, you can also store and display your own business tax IDs on invoices and credit notes. This is a common regulatory requirement.

*   You can add up to 25 tax IDs to your account.
*   Both account and customer tax IDs are displayed in the header of invoice and credit note PDFs.
*   You can select default tax IDs to appear on all invoices and credit notes, or define specific tax IDs for individual invoices.
*   **Caution:** Account tax IDs cannot be added, changed, or removed after an invoice is finalized.

#### Managing Account Tax IDs

*   **Dashboard:** You can add and delete tax IDs via the invoice settings page in the Dashboard. Once added, you can set a tax ID as the default for all invoices and credit notes.
*   **API:** You can also add and delete tax IDs using the Stripe API.

### Collecting Customer Tax IDs with Checkout

When using Stripe Checkout, you can enable tax ID collection to automatically display and hide the relevant form fields based on the customer's location.

*   If tax ID collection is enabled, Checkout will show a checkbox for customers to indicate they are purchasing as a business.
*   When checked, fields for the tax ID and legal entity name will appear.
*   Checkout uses the customer's shipping address (if available) or billing address to determine their location.
*   To enable this, set `tax_id_collection[enabled]` to `true` when creating a Checkout session.