This Date Plus/Minus N Business Days Calculator finds the final date after adding or subtracting a chosen number of business days from a start date. It can skip Saturdays, Sundays, observed U.S. federal holidays, and custom non-working dates such as PTO, company closures, court closures, or school holidays.

Date Plus/Minus N Business Days Calculator

Add or subtract business days from a start date, with weekends, U.S. federal holidays, and custom non-working dates.

Use this calculator to add or subtract business days from a start date. You can skip weekends, exclude observed U.S. federal holidays, add custom non-working dates, and choose whether the start date should count.

Counting options

Use YYYY-MM-DD format, one date per line. Useful for PTO, company holidays, office closures, court closures, school closures, or other non-working dates.

U.S. federal holiday calculations use observed federal holidays for Monday-Friday schedules. Actual business schedules, state holidays, court holidays, school calendars, company holidays, and union schedules may differ.
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How to use this calculator

  1. Enter the start date.
  2. Choose whether to add or subtract business days.
  3. Enter the number of business days.
  4. Choose whether the start date should count if it is a business day.
  5. Select which weekend days should be excluded.
  6. Choose whether to exclude U.S. federal holidays, custom dates, both, or no holidays.
  7. Click Calculate Date.

Date Plus/Minus Business Days Calculator

What the inputs mean

  • Start date: The date the calculation begins from.
  • Add business days: Moves forward from the start date.
  • Subtract business days: Moves backward from the start date.
  • Number of business days: How many working days to move.
  • Count the start date: If checked, the start date counts as day 1 only if it is a business day.
  • Exclude Saturday / Sunday: Removes selected weekend days from the business day count.
  • Holiday setting: Controls whether U.S. federal holidays, custom dates, or both are skipped.
  • Custom non-working dates: Extra dates to skip, entered one per line in YYYY-MM-DD format.

What the result shows

The main result is the final date after the selected number of business days has been added or subtracted. The result also shows how the date was reached.

  • Final date: The calculated end date.
  • Business days moved: The number of business days counted.
  • Calendar days moved: The total number of calendar days crossed to reach the final date.
  • Weekend days skipped: Weekend dates that were not counted.
  • U.S. federal holidays skipped: Observed federal holidays that were not counted.
  • Custom dates skipped: Your custom non-working dates that were not counted.
  • Counted business dates: The actual dates counted as business days.
  • Skipped holidays and custom dates: A list of skipped non-weekend holiday/custom dates.

When to use this tool

  • Calculate a business-day deadline
  • Find a due date after a required number of work days
  • Subtract business days to find the latest start date
  • Estimate project, invoice, HR, or payroll dates
  • Skip PTO, office closures, or company holidays
  • Check business-day timelines for U.S. schedules

Important note about holidays

The U.S. federal holiday option uses observed federal holidays. It does not automatically include state holidays, court holidays, school calendars, bank-specific schedules, company holidays, union schedules, or local closures. Add those dates manually as custom non-working dates if they should be skipped.

Start date counting example

If you add 1 business day from a Monday and do not count the start date, the result is Tuesday. If you count the start date and that Monday is a business day, the result is Monday. This option matters because different deadlines and workplace policies count the first day differently.

CalcuLife.com