# `GET /misc/getSteuer`

Protected. Requires a valid session cookie (`credentials: 'include'`).

Returns tax classes and their rates from JTL-Wawi (`tSteuerklasse` + `tSteuersatz`, domestic zone `kSteuerzone = 1`).

## Response `200`

```json
{
  "steuerklassen": [
    {
      "kSteuerklasse": 1,
      "cName": "Normaler Steuersatz",
      "nStandard": 1,
      "fSteuersatz": 19
    },
    {
      "kSteuerklasse": 2,
      "cName": "Ermäßigter Steuersatz",
      "nStandard": 0,
      "fSteuersatz": 7
    }
  ]
}
```

| Field | Description |
|-------|-------------|
| `kSteuerklasse` | Tax class ID (used on articles as `kSteuerklasse`) |
| `cName` | Display name |
| `nStandard` | `1` if this is the default tax class |
| `fSteuersatz` | VAT rate in percent |

### Brutto calculation

Look up the article's `kSteuerklasse` in `steuerklassen`, then:

```js
function getBrutto(netto, kSteuerklasse, steuerklassen) {
  const row = steuerklassen.find((s) => s.kSteuerklasse === kSteuerklasse);
  if (!row) return null;
  return netto * (1 + row.fSteuersatz / 100);
}
```

Load once on app init and reuse for search results and article detail.

## Errors

| Status | Body |
|--------|------|
| 401 | `{ "error": "Unauthorized" }` |
| 500 | `{ "error": "..." }` |

## Example

```js
const res = await fetch('http://localhost:4208/api/misc/getSteuer', {
  credentials: 'include',
});
const { steuerklassen } = await res.json();
```