How to perform a Data Protection Impact Assessment (DPIA)

A Data Protection Impact Assessment (DPIA) is a legal requirement under UK GDPR for any processing that is likely to result in a high risk to individuals’ interests, such as handling sensitive financial data. By completing this assessment before you start processing data, you ensure that privacy risks are identified and minimised, protecting both your clients and your business from potential data breaches and legal penalties.

When is a DPIA required?

In the UK, the Information Commissioner’s Office (ICO) mandates a DPIA if you are processing "special category" data on a large scale or if the processing is "high risk." For a financial adviser, this almost always applies because you are dealing with detailed financial records, bank statements, and often health information for insurance purposes. If you are using new technology or your data handling could lead to physical, material, or non-material damage to a client (like identity theft or financial loss), you must conduct a DPIA.

Step-by-step guide to conducting your DPIA

1. Identify the need: Start by outlining what the project is and why you are processing the data. Explain why you think a DPIA is necessary (e.g., "We are collecting client tax returns and bank details to provide mortgage advice").
2. Describe the processing: Detail how the data flows. Where does it come from? Who has access to it? How is it stored, and how long will you keep it? It is often helpful to draw a simple flow chart of the data’s journey from the client to your secure storage.
3. Assess necessity and proportionality: Ask yourself if you really need all the data you are asking for. Is there a less intrusive way to achieve your goal? You must justify that the data collection is proportionate to the service you are providing.
4. Identify and assess risks: Think about what could go wrong. Could a laptop be stolen? Could an email be intercepted? Rate these risks based on their likelihood and the severity of the impact on the client.
5. Identify measures to reduce risk: This is the most important step. For every risk identified, list a mitigation strategy.
   • Encryption: Ensure all files and emails containing sensitive data are encrypted.
   • Access Control: Implement "least privilege" access, meaning only people who absolutely need the data to do their jobs can see it.
   • Two-Factor Authentication (2FA): Require 2FA for all systems holding client data.
6. Sign off and record: Document your findings and the measures you’ve committed to. This document becomes your "paper trail" to show the ICO that you have taken your responsibilities seriously.

Top Tip: You don't need to start from scratch. The ICO provides a free DPIA template on their website. Using their official structure ensures you don't miss any legal requirements.

Reviewing your assessment

A DPIA is not a "one and done" task. It should be a living document. If you change your software, start offering a new type of financial product, or move your files to a different cloud provider, you must revisit and update your DPIA to ensure your mitigation strategies are still fit for purpose.