Deadline calculator

Three dates from one: when the month ends, when an extension notice has to go out, and where the extension takes you. Counted the way Union law counts a period in months, with every rule stated beside the result.

Date the request arrived

The day of receipt. This day is not counted in the period.

Day

Month

Year

6 Sep 2026

An identity check was neededTick this to see the same period counted from the day identity was confirmed as well.

An extension notice was sent inside the first monthThe two further months are only available where the person was told about them in time.

Work to this date

6 Oct 2026

The dates

Counted from

6 Sep 2026

First day inside the period

7 Sep 2026

The month ends

6 Oct 2026

Last day to send an extension notice

6 Oct 2026

Extended deadline, two further months

No extension notice was sent, so the extended date is what would have been available rather than what is.

6 Dec 2026

What this does not do

It counts calendar days. A date that lands on a Saturday, a Sunday or a public holiday is shown as it falls, and it is not moved to the following working day. Which days are public holidays is set by each Member State, so applying that rule needs a calendar per country, which is the Handbook's work rather than this page's. Read every date below as the earliest the period could end.

It states the Regulation and nothing else. A Member State may restrict Article 15 by legislative measure and national law can change what a request turns on, so read the result against the Handbook record for the jurisdiction you are answering in.

It is arithmetic on the dates you typed. It is not advice about the request you are holding.

The rules applied

The controller provides information on the action taken without undue delay and in any event within one month of receipt of the request.
Regulation (EU) 2016/679, Article 12(3)
The day on which the triggering event occurs is not counted in the period. A period expressed in months ends with the expiry of the day in the final month that falls on the same date as the day the period runs from, and where the final month has no such day it ends with the expiry of the last day of that month.
Regulation (EEC, Euratom) No 1182/71 on periods, dates and time limits, Articles 3(1) and 3(2)
An extension is not silent. The controller informs the person of the extension, together with the reasons for the delay, within one month of receipt of the request.
Regulation (EU) 2016/679, Article 12(3)
The period may be extended by two further months where necessary, taking into account the complexity and the number of the requests.
Regulation (EU) 2016/679, Article 12(3)
Where the controller does not take action on the request, it informs the person of the reasons and of the routes to a complaint and to a judicial remedy, at the latest within one month of receipt.
Regulation (EU) 2016/679, Article 12(4)
Where the last day of a period falls on a Saturday, a Sunday or a public holiday, that Regulation ends the period on the following working day instead.
Regulation (EEC, Euratom) No 1182/71 on periods, dates and time limits, Article 3(4)
Where the controller has reasonable doubts about the identity of the person making the request, it may request the additional information necessary to confirm that identity.
Regulation (EU) 2016/679, Article 12(6)