# XWUITaxBreakdownPanel

An itemized tax breakdown: subtotal, a single collapsed "Tax" total line by default, and a toggle that expands it into the itemized jurisdiction lines supplied via `data.lines` (state, county, city, special district, etc.), then a grand total.

## Events

| Event | Callback | Subscriber | `detail` |
|---|---|---|---|
| `xwui-tax-breakdown-panel:toggle` | `onToggle` | `onToggle(handler)` | `{ expanded }` |

## Usage

```ts
import { XWUITaxBreakdownPanel } from '@exonware/xwui/industry';

new XWUITaxBreakdownPanel(host, {
  subtotal: 120,
  lines: [
    { label: 'State tax (6.25%)', amount: 7.5 },
    { label: 'County tax (1%)', amount: 1.2 },
  ],
});
```

```api
```