# Vat Calculator — REST API endpoint `vat-calculator`

Return the net amount, the VAT (or sales tax) amount, and the gross amount for a price. Mode add treats the amount as net and adds tax; modes remove and extract treat the amount as gross and take the tax out.

- Category: finance
- MCP server: https://mcp.findutils.com/ (Streamable HTTP, no API keys, 120 req/min per IP)
- REST endpoint: POST https://api.findutils.com/api/tools/vat-calculator/execute (no API keys, 60 req/min per IP)
- Reference page: https://findutils.com/api/vat-calculator/
- Same tool on the other surface: https://findutils.com/mcp/vat-calculator/

## Call the endpoint (verified example)

```bash
curl -X POST https://api.findutils.com/api/tools/vat-calculator/execute \
  -H "Content-Type: application/json" \
  -d '{
    "amount": 100,
    "vat_rate": 20,
    "mode": "add"
  }'

# Parameter schema
curl https://api.findutils.com/api/tools/vat-calculator
```

## Input schema

| Argument | Type | Required | Description |
|---|---|---|---|
| `amount` | number | yes | The price. Net for mode add; gross for modes remove and extract. |
| `vat_rate` | number | yes | Tax rate in percent (20 = 20%). |
| `mode` | string (add \| remove \| extract) | no | add, remove, or extract. Default: add. |

Example arguments (verified):

```json
{
  "amount": 100,
  "vat_rate": 20,
  "mode": "add"
}
```

OpenAPI 3.1 spec: https://findutils.com/api/openapi.json · Interactive docs: https://findutils.com/api/docs/

## Also an MCP tool

```bash
claude mcp add findutils --transport http https://mcp.findutils.com/
```

Then ask the client to call `findutils:vat_calculator`. Full MCP reference: https://findutils.com/mcp/vat-calculator/

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