GDPR / DSAR Response Deadline
Data subject access request response deadline.
These calculators are for informational purposes only and do not constitute legal, financial, or professional advice.
How the GDPR / DSAR Response Deadline works
The GDPR / DSAR Response Deadline calculator finds the date by which you must respond to a data subject access request under the GDPR. The baseline is "one month" from receipt — but a month is not 30 days, and the calculator applies the rule the regulators actually use.
Under the GDPR the period runs to the corresponding date in the next month, and it can be extended by up to two further months for complex or numerous requests. Getting day zero and the month-boundary handling right is what keeps a response defensibly on time.
Worked example
A request received on 31 January is due by 28 February (29 in a leap year), because there is no 31 February — the deadline lands on the last day of the next month. A request received on 15 March is due 15 April.
Frequently asked questions
Is the DSAR deadline one month or 30 days?
One calendar month, running to the corresponding date in the following month — not a flat 30 days. Where that date does not exist, it falls on the last day of the month.
Can the deadline be extended?
Yes. For complex or multiple requests the period can be extended by up to two further months, provided you tell the requester within the first month and explain why.
When does the clock start?
On the day the request is received. The calculator lets you set that receipt date explicitly so day zero is never in doubt.
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