DSAR Deadline Calculator
Calculate the statutory response deadline for a Data Subject Access Request (DSAR) under UK GDPR Article 12(3) — one calendar month, extendable by two further months for complex or numerous requests.
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: .
Privacy: runs entirely in your browser. Nothing you enter is sent to us or saved.
When to use this tool
Use as soon as you submit a DSAR to a controller, or if you are a controller who has received a DSAR. The one-month clock starts on the day the request is received. If the controller intends to extend, they must notify you within the first month with reasons. Failure to respond is a breach reportable to the ICO.
DSAR Deadline Calculator
The one-month period starts on the day the controller receives the request. If submitted by email, this is the day it arrives in their inbox.