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deadlines
Data Protection & Privacy
Updated 2026-05-22
Data breach 72-hour ICO notification deadline
Article 33 UK GDPR requires controller notification to ICO within 72 hours of awareness.
Calculator — accuracy depends on current rates
This calculator uses the rules and figures published on the dates shown. Rates, thresholds, and fees change — always verify the current figure on the official government website before paying or filing. The output is not legal advice.
Rates current as of: .
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When to use this tool
You're a data controller (or DPO) and want to confirm the ICO notification deadline for a personal data breach.
Data breach 72-hour notification deadline
The 72-hour clock starts when the controller becomes aware — not when the breach happened.