What does this tool do?
Counting backwards in working days is useful for notice periods, filing windows and internal deadlines. The calculator skips weekends and can reserve extra weekdays for public holidays.
The Formula
Result = start date moved back by N weekdays, plus one weekday per holiday allowanceFrequently Asked Questions
Does the count include the start date?
No. The calculator moves to the previous weekday first, so the start date is not counted as one of the business days.
Can the result cross a month or year boundary?
Yes. Full calendar arithmetic is used, so the result can land in an earlier month or year and still skips weekends correctly.