This article is for startup founders and business owners who collect customer data and need to understand GDPR compliance requirements.
If you're wondering whether GDPR applies to your business, what you need in a privacy policy, or how to handle customer data requests legally, this guide covers the essential rules, required documentation, and practical steps to avoid penalties up to €20 million.
Key Takeaways
• You need a privacy policy from day one of collecting any personal data, including IP addresses from website analytics.
• GDPR fines reach up to €20 million or 4% of annual global turnover for non-compliance, whichever is higher.
• You must respond to data subject access requests within one month and search all systems containing their data.
• Data breaches require notification to the Data Protection Commission within 72 hours of becoming aware of the incident.
• Consent must be freely given with separate checkboxes for different purposes—you cannot bundle necessary and unnecessary processing together.

What is GDPR and Why Does It Matter for Your Startup?
The General Data Protection Regulation (GDPR) is EU legislation governing how businesses collect, use, and protect personal data.
It applies to any company processing personal data of EU residents, regardless of where your business is located. Irish startups, international companies with EU customers, and even US companies selling to Europeans must comply.
GDPR fundamentally changed data protection by shifting power from companies to individuals. Before GDPR, businesses largely controlled how they used personal data with minimal obligations. GDPR requires transparency, accountability, and individual control over personal information.
Non-compliance carries severe penalties. The Data Protection Commission can issue fines up to €20 million or 4% of annual global turnover, whichever is higher. Beyond financial penalties, GDPR violations damage reputation and customer trust.
What Counts as Personal Data Under GDPR?
Personal data is any information relating to an identified or identifiable natural person.
Article 4(1) defines this broadly to include obvious identifiers like names, email addresses, phone numbers, and physical addresses. However, it extends far beyond contact information to include IP addresses, cookie identifiers, location data, and device fingerprints.
Behavioral data qualifies as personal data when linked to individuals. Website browsing history, purchase patterns, app usage analytics, and social media interactions all constitute personal data under GDPR when they relate to identifiable people.
Special categories of personal data receive enhanced protection under Article 9. These include:
- Racial or ethnic origin
- Political opinions
- Religious or philosophical beliefs
- Trade union membership
- Genetic data
- Biometric data for identification purposes
- Health data
- Sex life or sexual orientation data
Processing special category data generally requires explicit consent or another specific legal basis. Most startups should avoid collecting this sensitive information unless absolutely necessary for core business functions.
When Do You Need a Privacy Policy?
You need a privacy policy from day one of collecting any personal data.
Article 13 requires providing privacy information at the time you collect data, not weeks later after building your website or launching your product. This applies whether you're collecting names through contact forms, emails through newsletters, or IP addresses through website analytics.
Your privacy policy must be easily accessible before data collection occurs. Place prominent links in your website footer, display it during account registration, include it in app onboarding flows, and reference it in email signup forms.
The policy needs updating whenever your data practices change. Adding new analytics tools, integrating third-party services, launching new features collecting additional data, or changing how you use existing data all require privacy policy updates.
What Must Your Privacy Policy Include?
Article 13 specifies mandatory privacy policy contents covering identity, purposes, legal basis, recipients, and retention.
Your policy must identify your company as the data controller with full contact details including company name, registration number, registered office address, and contact email.
Appoint a data protection officer if required and provide their contact information.
Explain what personal data you collect with specific examples. Describe why you collect each type of data through clear purpose statements:
- Account creation and management for user registration data
- Order processing and fulfillment for transaction information
- Customer service and support for communication history
- Marketing and promotional communications for contact details
- Website improvement and analytics for behavioral data
- Legal compliance and fraud prevention for security logs
State your legal basis for processing under Article 6. Disclose all third parties receiving personal data. List payment processors, email service providers, cloud hosting services, analytics platforms, and any other services accessing customer data. Explain what data each receives and why.
Specify retention periods for different data types. You cannot keep data indefinitely - state how long you retain customer accounts, transaction records, marketing lists, and analytics data.
How Do You Obtain Valid Consent Under GDPR?
Consent must be freely given, specific, informed, and unambiguous under Article 7.
Freely given means genuine choice without detriment. You cannot make service access conditional on consent to non-essential processing. Bundling consent for necessary and unnecessary processing violates GDPR - separate consent requests for different purposes.
Specific consent requires granular options for different processing activities. Don't use blanket consent covering multiple purposes - provide separate checkboxes for marketing emails, analytics tracking, third-party data sharing, and other distinct purposes.
Informed consent requires providing all Article 13 information before requesting consent. Users must understand what they're consenting to including what data you'll collect, how you'll use it, who receives it, and how long you'll keep it.
What Rights Do Individuals Have Over Their Data?
GDPR grants individuals eight core rights that your business must accommodate.
The right of access under Article 15 allows individuals to request copies of their personal data. You must provide this information free of charge within one month, including what data you hold, processing purposes, recipients, retention periods, and the source if not collected directly.
The right to rectification under Article 16 requires correcting inaccurate data. Individuals can request corrections to outdated information, incomplete records, or factual errors. You must update the information within one month.
The right to erasure ("right to be forgotten") under Article 17 allows deletion requests in specific circumstances. These include consent withdrawal when consent was the legal basis, data no longer necessary for original purposes, objection to processing without overriding grounds, or unlawful processing.
The right to restrict processing under Article 18 lets individuals limit how you use their data. They can request restriction pending accuracy verification, as an alternative to deletion, to establish legal claims, or when objecting to processing.
The right to data portability under Article 20 allows individuals to receive their data in structured, commonly used format and transmit it to other controllers. This applies to data provided through consent or contract performance.
The right to object under Article 21 applies to processing based on legitimate interests or direct marketing. Individuals can object anytime to marketing and you must stop immediately. For legitimate interests processing, you must stop unless demonstrating compelling grounds overriding individual interests.
Rights regarding automated decision-making under Article 22 protect individuals from decisions based solely on automated processing that produce legal or similarly significant effects. Provide human review mechanisms when using automated systems for important decisions.
How Should You Handle Data Subject Requests?
Establish clear procedures for receiving and responding to data subject requests.
Designate a specific email address for privacy requests. Monitor this address daily to ensure timely responses meeting GDPR's one-month deadline.
Verify requester identity before providing personal data. You cannot simply send data to anyone claiming to be a customer - require verification through account login, security questions, or identification documents for high-risk requests.
Search all systems containing personal data when processing access requests. Don't forget email archives, backup systems, analytics platforms, customer support tools, or spreadsheets containing customer information.
What Happens If You Experience a Data Breach?
Data breaches require notification under Article 33 within 72 hours of becoming aware.
Breach awareness begins when you have reasonable certainty that a security incident compromised personal data. Don't delay notification while investigating every detail - preliminary notifications acknowledging breaches with limited information satisfy initial requirements.
Notify the Data Protection Commission first at dataprotection.ie through their online breach notification system. Include the nature of breach and categories of affected individuals, approximate numbers of affected individuals and records, likely consequences, and measures taken or proposed to address the breach.
Notify affected individuals under Article 34 when breaches pose high risks to their rights and freedoms. High-risk breaches include exposure of sensitive data, compromised financial information, or data enabling identity theft.
Maintain breach records documenting all incidents regardless of notification requirements. Record breach facts, effects, remedial actions, and evidence supporting decisions not to notify. The Data Protection Commission can request these records during audits.

Laura Ryan is a practising Barrister at the Bar of Ireland. She graduated from the Honourable Society of King’s Inns in 2024, having previously qualified and practised as a Chartered Accountant in a big four accounting firm.













