Business Days Calculator

Worked example: 30 business days after Monday, October 26, 2026

1. Start counting on the day after Monday, October 26, 2026; the start date itself does not count.
2. Skip every Saturday and Sunday.
3. Skip the federal holidays observed in that period: Veterans Day (Wednesday, November 11, 2026) and Thanksgiving (Thursday, November 26, 2026).
4. The 30th business day is Wednesday, December 9, 2026, which is 44 calendar days after the start date.

How this is worked out

• A business day is a Monday to Friday that is not an observed US federal holiday.
• Counting starts the day after your start date (or the day before, when counting backward).
• A holiday that falls on a Saturday is observed on the Friday before; one that falls on a Sunday is observed on the Monday after. The observed day is the one that is skipped.
• Holidays follow today's federal rules for every year, except Juneteenth, which counts only from 2021, when it became a federal holiday.
• State, local and company holidays are not included.
• You can count up to 3,650 business days, for dates from January 1, 1900 to December 31, 2100.

Frequently asked questions

Does the start date count as a business day?

No. Counting starts on the next day (or the day before when you count backward), so 1 business day after a Monday is the Tuesday.

Are state holidays included?

No. Only the 11 US federal holidays are skipped, so check your own calendar if state, local or company holidays apply to you.

How are weekends handled?

Saturdays and Sundays are always skipped. The calendar-day figure includes them, which is why it is larger than the number of business days.

Can I count backward?

Yes. Choose Subtract to find the date a number of business days before your start date, for example to work back from a deadline.

What happens when a holiday falls on a weekend?

It is observed on the Friday before if it falls on a Saturday, or the Monday after if it falls on a Sunday. The calculator skips that observed weekday, because that is the day federal offices close.

Related tools

• Count the days and business days between two dates
• See every US federal holiday and its observed date
• Guide: How many business days are in a year
• Guide: How federal holidays are observed