The Ultimate GDPR Compliance Checklist for SaaS Founders

Know your lawful basis for every processing activity

Every piece of personal data you process needs a lawful basis. Most SaaS relies on contract for account data, legitimate interests for security and fraud prevention, and consent for marketing.

The common mistake is assuming consent covers everything. Consent is the most fragile basis, because it must be freely given, specific and revocable. Where contract or legitimate interests genuinely apply, use them instead.

Write the records nobody wants to write

Article 30 requires a record of processing activities. It is tedious and it is also the document that makes every other obligation tractable, because you cannot honour a deletion request for data you have not inventoried.

• What personal data you hold and where it lives.
• Why you process it and under which lawful basis.
• Who you share it with, including every sub-processor.
• How long you keep it and what triggers deletion.
• Which transfers leave the EEA and what safeguards cover them.

Make data subject rights operational

Users can request access, correction, deletion, portability and restriction, and you generally have one month to respond. A right you cannot execute within that window is a right you have not implemented.

Build the export and delete paths as real product features rather than manual engineering tickets. Teams that handle these by hand miss deadlines the moment volume rises, and the manual process itself tends to touch more data than necessary.

Reduce scope wherever you can

The cheapest compliance is data you never collect. Every field you do not store is a field you cannot leak, cannot be asked to export and cannot be fined over.

This is why cookie-free analytics simplifies the picture so much. Measurement that never collects personal data sits largely outside the heaviest obligations, and it removes the consent banner along with them.