About
About Deadline Calculator
Who we are, why you can trust our deadlines, and how every guide is reviewed before it goes live.
Our editorial team
Deadline Calculator is edited by Rachel Whitfield, a UK compliance and legal-operations specialist. She has spent over a decade working in compliance and legal-operations roles where counting statutory deadlines was a daily responsibility: freedom of information (FOI) and subject access requests (SARs), regulator complaint timelines, notice periods, cooling-off periods, and payment terms.
Rachel set the editorial standard for this site: every guide must explain the relevant legislation, show a worked example with real dates, and link back to the primary source — legislation.gov.uk, ICO guidance, FCA rules, or GOV.UK — so you can verify the rule yourself.
Read more about Rachel Whitfield or see how we review and update content.
Why trust our deadline calculations
- Primary sources first. Every guide cites the statute, statutory instrument, or regulator guidance behind the rule — the FOI Act 2000, UK GDPR and Data Protection Act 2018, the Consumer Contracts Regulations 2013, the Employment Rights Act 1996, and FCA complaint-handling rules.
- Dated reviews. Each guide carries a "Last reviewed" date, and content is re-checked when legislation or regulator guidance changes.
- Worked examples. Rules are illustrated with real UK dates so you can see exactly how weekends and bank holidays change the answer.
- A clear disclaimer. We are a planning aid, not a substitute for legal advice — and we say so on every page.
What you'll find here
- FOI deadline calculators - 20 working day response dates under the Freedom of Information Act 2000 and the Environmental Information Regulations 2004.
- SAR deadline calculators - one calendar month time limits for subject access requests under UK GDPR.
- Notice period calculators - end dates for 1 week, 4 weeks, 1 month, and custom notice periods, including tenancy notice tools.
- Cooling-off period calculators - 14 day cancellation deadlines under the Consumer Contracts Regulations.
- Complaint response calculators - FCA-style 8 week, NHS-style, and 20 working day complaint timelines.
- Business day calculators - quick tools for adding 5, 10, or 30 business days from today or before a date.
- Invoice and payment calculators - net 30 due dates, late payment interest, and holiday entitlement tools.
- Free downloadable templates - deadline tracker spreadsheets for SAR, FOI, complaint, and notice workflows.
Important: This site is a planning aid, not legal advice. Deadlines can depend on facts, policy wording, jurisdiction, service rules, pauses, extensions and changing law. Always verify important deadlines with the official guidance or a qualified adviser.