Business day calculator
5 Business Days Before a Date Calculator
Work out 5 UK business days before a selected date.
5 June 2026
5 business days before 12 June 2026 is 5 June 2026. Weekends and listed UK bank holidays are excluded.
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.
How this calculator counts
Business days are counted by excluding Saturdays, Sundays and the UK bank holidays listed in this site. For legal, contractual or court deadlines, always check the rule that applies to your situation.
Counting backwards from a deadline
Counting backwards works differently from counting forwards. The target date is not itself one of the five days — you step back to the previous business day and count from there.
Example: a deadline of Friday 30 October 2026, with 5 business days of lead time, gives Friday 23 October 2026. The weekend is skipped, so the answer is a week earlier rather than five calendar days earlier.
Why backwards counting matters
Backwards counting is how you work out the last day to serve a document, post a response, or start a process so that it completes before a fixed date. Getting it wrong by a day is the difference between in time and out of time, and the error usually comes from treating the deadline date as day one.
Where the deadline falls immediately after a bank holiday, the practical last day moves earlier still — the calculator applies the same holiday list as the forward tools.
If the deadline is a court or statutory date
Court rules and statutory deadlines have their own service and counting provisions, including rules about when a document is treated as served. Use this tool for planning and sanity-checking, then confirm against the rule that governs your matter.
FAQs
Does today count as a business day?
This calculator starts counting after the start date for "from" calculations, which is common for deadline planning. Check your specific rule if today should count as day one.
Are bank holidays excluded?
Yes, the calculator excludes the UK bank holidays held in the site calendar.
Does the deadline date itself count as one of the five days?
No. This calculator counts back from the day before the deadline, so the deadline date is not treated as day one.
What if the fifth business day back is a bank holiday?
It is skipped. Each listed UK bank holiday inside the window moves the answer one working day earlier.