> ## Documentation Index
> Fetch the complete documentation index at: https://docs.contafy.com.mx/llms.txt
> Use this file to discover all available pages before exploring further.

# Get Fiscal Regimes

> Retrieve the catalog of SAT fiscal regimes

## GET /api/sat/regimenes-fiscales

Retrieves the catalog of fiscal regimes (Régimen Fiscal) from SAT. This catalog is used when creating or updating profiles and invoices to ensure compliance with Mexican tax regulations.

## Authentication

This endpoint requires authentication. Include your access token in the request cookies.

## Query Parameters

<ParamField query="tipo_persona" type="string" optional>
  Filter by person type. Options: `FISICA`, `MORAL`
</ParamField>

## Response

<ResponseField name="data" type="RegimenFiscalItem[]" required>
  Array of fiscal regime objects

  <Expandable title="Fiscal Regime Object">
    <ResponseField name="clave" type="string" required>
      Fiscal regime code (e.g., "601", "612")
    </ResponseField>

    <ResponseField name="descripcion" type="string" required>
      Description of the fiscal regime
    </ResponseField>

    <ResponseField name="aplica_persona_fisica" type="boolean" required>
      Whether this regime applies to individuals (Persona Física)
    </ResponseField>

    <ResponseField name="aplica_persona_moral" type="boolean" required>
      Whether this regime applies to legal entities (Persona Moral)
    </ResponseField>
  </Expandable>
</ResponseField>

## Example Request

```bash theme={null}
curl -X GET "https://api.contafy.com/api/sat/regimenes-fiscales?tipo_persona=FISICA" \
  -H "Cookie: access_token=your_access_token"
```

## Example Response

```json theme={null}
{
  "data": [
    {
      "clave": "605",
      "descripcion": "Sueldos y Salarios e Ingresos Asimilados a Salarios",
      "aplica_persona_fisica": true,
      "aplica_persona_moral": false
    },
    {
      "clave": "606",
      "descripcion": "Arrendamiento",
      "aplica_persona_fisica": true,
      "aplica_persona_moral": false
    },
    {
      "clave": "612",
      "descripcion": "Personas Físicas con Actividades Empresariales y Profesionales",
      "aplica_persona_fisica": true,
      "aplica_persona_moral": false
    },
    {
      "clave": "621",
      "descripcion": "Incorporación Fiscal",
      "aplica_persona_fisica": true,
      "aplica_persona_moral": false
    },
    {
      "clave": "625",
      "descripcion": "Régimen de las Actividades Empresariales con ingresos a través de Plataformas Tecnológicas",
      "aplica_persona_fisica": true,
      "aplica_persona_moral": false
    },
    {
      "clave": "626",
      "descripcion": "Régimen Simplificado de Confianza",
      "aplica_persona_fisica": true,
      "aplica_persona_moral": true
    }
  ]
}
```

## Common Fiscal Regimes

### For Persona Física (Individuals)

* **601**: General de Ley Personas Morales
* **605**: Sueldos y Salarios e Ingresos Asimilados a Salarios
* **606**: Arrendamiento
* **612**: Personas Físicas con Actividades Empresariales y Profesionales
* **621**: Incorporación Fiscal
* **626**: Régimen Simplificado de Confianza

### For Persona Moral (Legal Entities)

* **601**: General de Ley Personas Morales
* **603**: Personas Morales con Fines no Lucrativos
* **626**: Régimen Simplificado de Confianza

## Use Cases

* Populate regime dropdown when creating profiles
* Validate fiscal regime codes in invoices
* Filter available regimes based on person type
* Display regime information in user interfaces

## Error Responses

<ResponseField name="401 Unauthorized" type="error">
  Authentication required or token expired

  ```json theme={null}
  {
    "error": "Unauthorized",
    "message": "Authentication required"
  }
  ```
</ResponseField>

<ResponseField name="400 Bad Request" type="error">
  Invalid tipo\_persona parameter

  ```json theme={null}
  {
    "error": "Bad Request",
    "message": "Invalid tipo_persona. Must be FISICA or MORAL"
  }
  ```
</ResponseField>

<ResponseField name="500 Internal Server Error" type="error">
  Server error occurred

  ```json theme={null}
  {
    "error": "Internal Server Error",
    "message": "An unexpected error occurred"
  }
  ```
</ResponseField>

<Note>
  This catalog is based on the official SAT c\_RegimenFiscal catalog and is updated periodically to reflect changes in Mexican tax law.
</Note>

<Tip>
  When creating a profile, always validate that the selected fiscal regime is appropriate for the person type (física or moral).
</Tip>