Business day calculator
10 Business Days Before a Date Calculator
Work out 10 UK business days before a selected date.
29 May 2026
10 business days before 12 June 2026 is 29 May 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.
Two working weeks of lead time
Ten business days before a date means stepping back two full working weeks. In calendar terms that is usually 14 days, plus one day for each bank holiday crossed.
Example: a deadline of Friday 30 October 2026 gives Friday 16 October 2026 — two weekends earlier, with no bank holiday in the period.
Where this calculation is used
Ten working days of lead time is typical for posting documents, arranging a service, or preparing a response that has to be reviewed before it goes out. It is also the point at which many people discover that a bank holiday has quietly removed one of their working days.
Checking your answer
Count the working days between the calculated date and the deadline, excluding the deadline itself. If you get ten, the calculation is right. If you get nine, a bank holiday has been missed; if eleven, the start date was treated as day one.
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.
Is ten business days before a date the same as two weeks before?
Only when no bank holiday falls in the window. Otherwise the business-day answer is earlier than the calendar answer.
How do I verify the result?
Count the working days between the calculated date and the deadline, excluding the deadline itself — it should come to ten.