Add Business Days to a Date
Find a future date by adding working days, with weekends and official holidays skipped.
Your working days
Select a start date and day count, then calculate.
Data snapshot: 13 October 2026
View sources and coverage →
View excluded dates
US results follow the standard federal Monday–Friday holiday calendar. They are not bank, ACH, Federal Reserve or stock exchange calendars. UK results use the selected region’s bank holidays; individual employers may differ.
How adding days works
The starting date is day zero. The next eligible working day is day one, even when the starting date falls on a weekend or holiday. Entering zero returns your starting date unchanged. A result outside verified coverage is refused.
Add 1 US business day to 30 December 2027 and the result is 3 January 2028. Friday 31 December is the observed New Year’s Day holiday; the weekend is also skipped.
Coverage and limitations
Verified holiday dates cover 1 January 2026 to 31 December 2028. The calculator accepts up to 1,000 business days, but both the input and resulting date must remain within that coverage. UK regions differ, and additional bank holidays may be announced after this snapshot.
This tool is for planning with a stated calendar. Check any contract, employer or institution’s own deadline rules. Read the data sources and update policy.