# Break Even Calculator — REST API endpoint `break-even-calculator`

Return the break-even point of a product or business: contribution margin, contribution margin ratio, break-even units and revenue, plus the units and revenue needed to reach a target profit. Units are rounded up to whole units.

- 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/break-even-calculator/execute (no API keys, 60 req/min per IP)
- Reference page: https://findutils.com/api/break-even-calculator/
- Same tool on the other surface: https://findutils.com/mcp/break-even-calculator/

## Call the endpoint (verified example)

```bash
curl -X POST https://api.findutils.com/api/tools/break-even-calculator/execute \
  -H "Content-Type: application/json" \
  -d '{
    "fixed_costs": 10000,
    "variable_cost_per_unit": 20,
    "price_per_unit": 50,
    "target_profit": 5000
  }'

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

## Input schema

| Argument | Type | Required | Description |
|---|---|---|---|
| `fixed_costs` | number | yes | Total fixed costs for the period. |
| `variable_cost_per_unit` | number | yes | Variable cost to produce one unit. |
| `price_per_unit` | number | yes | Selling price of one unit. Must be greater than the variable cost. |
| `target_profit` | number | no | Desired profit for the period. Default: 0. |

Example arguments (verified):

```json
{
  "fixed_costs": 10000,
  "variable_cost_per_unit": 20,
  "price_per_unit": 50,
  "target_profit": 5000
}
```

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:break_even_calculator`. Full MCP reference: https://findutils.com/mcp/break-even-calculator/

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