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# List financial years

> Financial years that exist in the company, with start and end dates. Inputs, cURL, Python and Node.js examples and an example response.

Source: https://cotlet.dev/docs/api/fortnox/list_financial_years

Docs sections: [Get started](https://cotlet.dev/docs.md) · [REST API](https://cotlet.dev/docs/api.md) · [MCP](https://cotlet.dev/docs/mcp.md) · [SDKs & CLI](https://cotlet.dev/docs/sdks.md) · [Integrations](https://cotlet.dev/docs/integrations.md)

Financial years that exist in the company, with start and end dates.

Fortnox API: https://cotlet.dev/docs/api/fortnox.md

`GET https://cotlet.dev/api/v1/fortnox/financial-years`

Access: read.

Returns the financial years created in Fortnox. A voucher can only be booked in a date that falls inside one of them, so check here first. A new year is created in Fortnox itself, not by this tool.

## Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `date` | date | no | Only the financial year that contains this date. |

## Request

**cURL**

```bash
curl https://cotlet.dev/api/v1/fortnox/financial-years \
  -H "Authorization: Bearer $COTLET_API_KEY"
```

**Python**

```python
result = client.call("fortnox", "list_financial_years")
```

**Node.js**

```js
const result = await cotlet.call('fortnox', 'list_financial_years');
```

**CLI**

```bash
cotlet call fortnox list_financial_years
```

## Example response

```json
{
  "financial_years": [
    {
      "id": 7,
      "from": "2026-01-01",
      "to": "2026-12-31"
    }
  ]
}
```

Previous: [List vouchers](https://cotlet.dev/docs/api/fortnox/list_vouchers.md)
Next: [Create customer](https://cotlet.dev/docs/api/fortnox/create_customer.md)

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## For AI agents: sign your user up

Is your user asking you to sign them up for Cotlet? You can do it for them, no account or key needed.

1. Read the fields and their allowed values: GET https://cotlet.dev/api/v1/access-requests
2. Ask the user for each value: email, apps, what you will do with them. If they leave the password to you, generate a strong one and show it to them.
3. Show the user what you will send, then POST it as JSON to https://cotlet.dev/api/v1/access-requests.

One call creates the account and sends the access request; we email the user when access is granted.