> For the complete documentation index, see [llms.txt](https://doc.dastra.eu/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.dastra.eu/en/features/audit/questionnaire-types/lia.md).

# Legitimate Interests Assessment (LIA)

## What is a LIA?

A Legitimate Interests Assessment (LIA) is an analysis used to document and justify the use of **legitimate interests** as the legal basis for a processing activity. It helps verify that the controller's interests are not overridden by the rights and freedoms of the individuals concerned.

The GDPR does not require a LIA to be formally documented, but it is strongly recommended as a matter of accountability and may be requested by data protection authorities.

## LIA template in Dastra

Dastra provides a LIA template in the questionnaire library:

* **Legitimate interests assessment (LIA)**: 26 questions structured around the three-part test

To access it, go to the "Questionnaire templates" tab, click **"Create a template"** → **"Automated questionnaires"**, and search for "LIA".

## Structure of a LIA questionnaire

The LIA is structured around three tests:

1. **Legitimacy test** — identify the legitimate interest pursued: why you want to process the data, who benefits from it, and what the desired outcome is for individuals
2. **Necessity test** — demonstrate that the processing is necessary to achieve the purpose and that less intrusive alternatives have been considered
3. **Balancing test** — weigh the controller's interests against the rights and freedoms of individuals, taking into account the nature of the data, the reasonable expectations of individuals, and any safeguards in place

## Creating a LIA directly from a processing activity

When editing a processing activity in Dastra, you can create a LIA directly from a purpose using legitimate interests as its legal basis:

1. Go to the **Purposes** tab of the processing activity
2. Open a purpose with "Legitimate interests" as its legal basis
3. Click **"Create a Legitimate Interests Assessment (LIA)"**

This automatically links the LIA response to the relevant purpose.

## Go further

{% content-ref url="/pages/rNkNzVSuXi6rd9VHOA1p" %}
[PIA / DPIA](/en/features/audit/questionnaire-types/pia-dpia.md)
{% endcontent-ref %}

{% content-ref url="/pages/r9k0wNZoPIx5Jgh7fYOc" %}
[Transfer Impact Assessment (TIA)](/en/features/audit/questionnaire-types/tia.md)
{% endcontent-ref %}


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