# Return On Equity Calculator API

> For the complete documentation index, see [llms.txt](/llms.txt).

Calculate ROE with optional 3- or 5-component DuPont analysis.

Use this endpoint to add the tool to your app, site, workflow, or agent without rebuilding formulas, validation, examples, and docs.

- Slug: `return-on-equity-calculator`
- Category: `finance`
- Version: `2026-04-22`
- Credits per successful call: 2
- Starts on: starter
- Max payload: 65536 bytes
- Privacy mode: `hash_only`
- Available on: starter, pro, business, scale
- Browser tool: https://miniwebtool.com/return-on-equity-calculator/

## Endpoint

`POST https://api.miniwebtool.com/v1/tools/return-on-equity-calculator/run`

## Request body

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `calc_mode` | `str` | no | basic | dupont3 | dupont5 Choices: basic, dupont3, dupont5 |
| `net_income` | `float` | no |  |
| `shareholders_equity` | `float` | no |  |
| `revenue` | `float | None` | no |  |
| `total_assets` | `float | None` | no |  |
| `ebit` | `float | None` | no |  |
| `pretax_income` | `float | None` | no |  |
| `industry` | `str` | no | none | technology | healthcare | financial | consumer | industrial | energy | utilities | realestate | materials | telecom Choices: none, technology, healthcare, financial, consumer, industrial, energy, utilities, realestate, materials, telecom |
| `precision` | `int` | no |  |

## Example request

```json
{
  "calc_mode": "basic",
  "net_income": 5000000,
  "shareholders_equity": 25000000,
  "industry": "none",
  "precision": 4
}
```

## cURL

```bash
curl -X POST https://api.miniwebtool.com/v1/tools/return-on-equity-calculator/run \
  -H 'Authorization: Bearer mwt_live_YOUR_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"calc_mode":"basic","net_income":5000000,"shareholders_equity":25000000,"industry":"none","precision":4}'
```

## Response envelope

```json
{
  "request_id": "01K...",
  "tool": "return-on-equity-calculator",
  "tool_version": "2026-04-22",
  "credits_used": 2,
  "result": {}
}
```

## Errors

Errors are RFC 7807 `application/problem+json`. Branch on `code`, not `title`.

## MCP

Agents can discover and call this tool through `https://api.miniwebtool.com/mcp` or `https://api.miniwebtool.com/v1/mcp` using MCP `tools/list` and `tools/call`.

## Frequently asked

### What does the Return On Equity Calculator API do?

Calculate ROE with optional 3- or 5-component DuPont analysis. Use it to add this utility without rebuilding formulas, validation, examples, and documentation.

### How much does one call cost?

2 credits per successful call. Failed calls do not bill.

### What parameters are required?

Required fields: (none). Full schema at `https://api.miniwebtool.com/v1/openapi.json`.

### Is this deterministic?

Yes. Same input, same output. Tool version: 2026-04-22.