Add business days to date

If you need to add or subtract business days (workdays) to a date so that you can calculate a date in the future or past that skips weekends (and holidays), you can use the WORKDAY function. Holidays are optional.

In the example, the formula in D6 is:

=WORKDAY(B6,C6,B9:B11)

This adds 7 days to Tuesday, Dec 22 and returns Tuesday, January 5, 2016.

Explanation

By default, the WORKDAY function will exclude weekends (Saturday and Sunday). In this case, we have also supplied a list of 3 holidays that all fall in the date range being calculated, which means both the weekends and holidays will be excluded. The following table shows which dates are excluded with and without holidays provided (shaded gray). The final dates returned by WORKDAY are highlighted in yellow

No holidays	Holidays provided
Wed, 23-Dec-2015	Wed, 23-Dec-2015
Thu, 24-Dec-2015	Thu, 24-Dec-2015
Fri, 25-Dec-2015	Fri, 25-Dec-2015
Sat, 26-Dec-2015	Sat, 26-Dec-2015
Sun, 27-Dec-2015	Sun, 27-Dec-2015
Mon, 28-Dec-2015	Mon, 28-Dec-2015
Tue, 29-Dec-2015	Tue, 29-Dec-2015
Wed, 30-Dec-2015	Wed, 30-Dec-2015
Thu, 31-Dec-2015	Thu, 31-Dec-2015
Fri, 01-Jan-2016	Fri, 01-Jan-2016
Sat, 02-Jan-2016	Sat, 02-Jan-2016
Sun, 03-Jan-2016	Sun, 03-Jan-2016
Mon, 04-Jan-2016	Mon, 04-Jan-2016
Tue, 05-Jan-2016	Tue, 05-Jan-2016
Wed, 06-Jan-2016	Wed, 06-Jan-2016

Subtract workdays

To subtract business from a date (instead of adding workdays) just use a negative value for days. For example to get a date 3 workdays before a date in A1, you can use: