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

# TaxIdElement

> Collects a business tax registration accepted by the API. Labels use buyer-facing names. The placeholder matches the selected format. `country` preselects a type. `onChange` emits committed pairs. The host supplies API validation errors.

<Info>This page documents `@whop/elements@1.0.0-beta.0` and `@whop/elements-react@1.0.0-beta.0`.</Info>

*Pre-release, not yet part of a stable release.*

Mounts inside [`Payments`](/elements/beta/payments/overview). Pass props and callbacks through the create options or React props.

<div data-whop-split style={{ display: "flex", gap: "1.5rem", alignItems: "flex-start", flexWrap: "wrap" }}>
  <div style={{ flex: "1 1 26rem", minWidth: 0 }}>
    <div data-whop-usage="payments/taxId">
      <CodeGroup>
        ```tsx React theme={null}
        import { WhopElements, Payments, TaxIdElement } from "@whop/elements-react";
        import { loadWhop } from "@whop/elements";

        function Example() {
          return (
            <WhopElements elements={loadWhop()}>
              <Payments /* options */>
                <TaxIdElement onChange={(e) => console.log(e)} />
              </Payments>
            </WhopElements>
          );
        }
        ```

        ```html Vanilla theme={null}
        <script src="https://js.whop.cloud/elements/amber/elements.js" data-whop-elements></script>
        <script type="module">
          const payments = window.WhopElements().payments.create({ /* options */ });
          payments.create('taxId', { onChange: (e) => console.log(e) }).mount('#payments-taxId');
        </script>
        ```
      </CodeGroup>
    </div>
  </div>

  <div style={{ flex: "1 1 20rem", minWidth: 0 }}>
    <div data-whop-demo-shell style={{ position: "relative", minHeight: "320px", transition: "min-height 200ms ease" }}>
      <div data-whop-demo-skeleton style={{ position: "absolute", inset: "0", borderRadius: "12px", background: "rgba(140, 140, 140, 0.12)", pointerEvents: "none", transition: "opacity 200ms ease" }} />

      <div data-whop-demo-native="element:payments/taxId" data-whop-elements-version="1.0.0-beta.0" style={{ position: "relative" }} />
    </div>

    <p style={{ fontSize: "0.8125rem", opacity: 0.7 }}>Example data. [Open the Playground](/elements/beta/payments/overview#playground).</p>
  </div>
</div>

## Props

<ResponseField name="disabled" type="boolean">
  Disables both fields while the host saves the last committed registration. Defaults to `false`.
</ResponseField>

<ResponseField name="country" type="string">
  ISO 3166-1 alpha-2 buyer country used to preselect the type. `AR` selects `ar_cuit`. EU and unmapped or empty values select `eu_vat`. Other uniquely mapped countries select their type. A manual selection persists across country changes. Defaults to `""`.
</ResponseField>

<ResponseField name="defaultValue" type="{ type: string; value: string; }">
  Initial `type` and `value` from a resumed session. An unsupported `type` falls back to the country default.
</ResponseField>

<ResponseField name="error" type="string">
  API validation error shown below the value input. Empty (default) shows nothing. Defaults to `""`.
</ResponseField>

## Events

Pass callbacks in the create options or React props.

### `onChange`

Fires on blur or Enter when the value is nonempty, or when the type changes with a value present. Identical consecutive values fire once. Clearing the value doesn't fire. The host must clear stored registrations.

**Signature:** `((payload: { taxId: { type: "ad_nrt" | "ao_tin" | "ar_cuit" | "al_tin" | "am_tin" | "aw_tin" | "au_abn" | "au_arn" | "eu_vat" | "az_tin" | "bs_tin" | "bh_vat" | "bd_bin" | "bb_tin" | "by_tin" | "bj_ifu" | "bo_tin" | "ba_tin" | "br_cnpj" | "br_cpf" | "bg_uic" | "bf_ifu" | "kh_tin" | "cm_niu" | "ca_bn" | "ca_gst_hst" | "ca_pst_bc" | "ca_pst_mb" | "ca_pst_sk" | "ca_qst" | "cv_nif" | "cl_tin" | "cn_tin" | "co_nit" | "cd_nif" | "cr_tin" | "hr_oib" | "do_rcn" | "ec_ruc" | "eg_tin" | "sv_nit" | "et_tin" | "eu_oss_vat" | "ge_vat" | "gh_tin" | "de_stn" | "gb_vat" | "gn_nif" | "hk_br" | "hu_tin" | "is_vat" | "in_gst" | "id_npwp" | "il_vat" | "jp_cn" | "jp_rn" | "jp_trn" | "kz_bin" | "ke_pin" | "kg_tin" | "la_tin" | "li_uid" | "li_vat" | "my_frp" | "my_itn" | "my_sst" | "mr_nif" | "mx_rfc" | "md_vat" | "me_pib" | "ma_vat" | "np_pan" | "nz_gst" | "ng_tin" | "mk_vat" | "no_vat" | "no_voec" | "om_vat" | "pe_ruc" | "ph_tin" | "pl_nip" | "ro_tin" | "ru_inn" | "ru_kpp" | "sa_vat" | "sn_ninea" | "rs_pib" | "sg_gst" | "sg_uen" | "si_tin" | "za_vat" | "kr_brn" | "es_cif" | "ch_uid" | "ch_vat" | "tw_vat" | "tj_tin" | "tz_vat" | "th_vat" | "tr_tin" | "ug_tin" | "ua_vat" | "ae_trn" | "us_ein" | "uy_ruc" | "uz_tin" | "uz_vat" | "ve_rif" | "vn_tin" | "zm_tin" | "zw_tin" | "sr_fin" | "xi_vat"; value: string; }; }) => void)`

### `onLoaderStart`

Runs after the loading skeleton first paints and before `onReady`.

**Signature:** `(() => void)`

### `onReady`

Runs after the element's first complete paint.

**Signature:** `(() => void)`

### `onError`

Runs when the element fails to load or crashes. The fallback remains visible. Use `code` for programmatic handling. `sourceKey` identifies a failed host-state source.

**Signature:** `((e: { message: string; code?: string | undefined; sourceKey?: string | undefined; }) => void)`

## Methods

Call these on the handle returned by `create`, or through a React `ref`.

### `mount`

Mounts the element in `target` and starts loading. React components mount themselves.

**Signature:** `(target: string | HTMLElement) => void`

### `destroy`

Removes the element and releases its frame and subscriptions. You can call it more than once. React removes the element automatically.

**Signature:** `() => void`

### `update`

Merges new props into the mounted element. In React, change the component props instead.

**Signature:** `(options: Partial<TaxIdElementProps>) => void`

## Styling

Style these parts through `appearance.classes`. Use camel case or kebab case for property names and include units. Page stylesheets can't reach the element's frame. The framework validates each declaration before injecting it.

| Class                   | Targets                    |
| ----------------------- | -------------------------- |
| `.whop-TaxId`           | Tax registration root      |
| `.whop-TaxIdError`      | API validation error       |
| `.whop-TaxIdInput`      | Registration value input   |
| `.whop-TaxIdLabel`      | Registration value label   |
| `.whop-TaxIdTypeLabel`  | Registration type label    |
| `.whop-TaxIdTypeSelect` | Registration type selector |

```ts theme={null}
const payments = whop.payments.create({
  appearance: {
    classes: {
      'whop-TaxId': { borderRadius: '8px', fontWeight: '600' },
      'whop-TaxIdError': { borderRadius: '8px', fontWeight: '600' },
      'whop-TaxIdInput': { borderRadius: '8px', fontWeight: '600' }
    }
  }
});

// 6 classes use this shape
payments.update({
  appearance: { classes: { 'whop-TaxId': { fontWeight: '700' } } }
});
```

In React, pass `appearance` to `<Payments>`. Set it globally with `WhopElements({ appearance })`.