=====FINAL=====
 Discount of 5% applies only to worktops and fixings, before VAT. Delivery stays at 20% and the fitting guide stays zero-rated.

```json
{
  "supplier_name": "NORTHGATE TIMBER SUPPLIES LTD",
  "invoice_number": "NTS/26/04417",
  "invoice_date": "2026-09-03",
  "due_date": "2026-10-03",
  "supplier_vat_number": "GB284991736",
  "net_total": 430.80,
  "vat_total": 83.76,
  "gross_total": 514.56
}
```

ELAPSED 16.7s
EXIT 0
PROXY_USAGE {"requests": 1, "in": 1656, "cached": 1536, "out": 149, "reasoning": 1729, "usd": 0.012276, "errors": []}