"Ships within 3 business days." "Funds clear in 5 business days." You've seen these phrases countless times, but when you actually need to know the date, the calculation is surprisingly easy to get wrong.

This guide explains what business days are, how to count them correctly, and how to handle tricky situations like holidays and Friday orders.

What Are Business Days?

Business days are the days when a company or institution is normally open and operational. In most countries, business days exclude Saturdays, Sundays, and public holidays — leaving Monday through Friday as the standard business week.

If a company says "ships in 3 business days" and you order on Monday, you can expect shipment by Wednesday (assuming no holidays).

Business Days vs. Calendar Days

Calendar days count every day including weekends. Business days skip weekends and holidays. "Deliver in 7 calendar days" and "deliver in 5 business days" starting Monday would both land on Monday, but "5 business days" from Friday would land the following Thursday — four calendar days later.

How to Count Business Days

Basic Rule: Start Counting the Next Day

The day you submit a request or place an order is typically Day 0. Counting starts from the next business day.

Example: Order placed Monday (Mar 16)

Mon Mar 16 — Day 0 (order date)
Tue Mar 17 — Business Day 1
Wed Mar 18 — Business Day 2
Thu Mar 19 — Business Day 3 ← "3 business days later"

When the Order Spans a Weekend

Weekends are skipped entirely. An order placed Friday adds 2 extra calendar days.

Example: Order placed Friday (Mar 20)

Fri Mar 20 — Day 0 (order date)
Sat Mar 21 — Skip (weekend)
Sun Mar 22 — Skip (weekend)
Mon Mar 23 — Business Day 1
Tue Mar 24 — Business Day 2
Wed Mar 25 — Business Day 3 ← "3 business days later"

When Holidays Are Involved

Public holidays are also skipped, just like weekends. During long holiday periods (like a national holiday week), "5 business days" can mean 10+ calendar days. Always check the calendar when timing is critical.

Common Use Cases

  • E-commerce shipping estimates: "Ships in 2–3 business days" — know when to expect dispatch
  • Bank transfers: "Cleared by next business day" — late Friday transfers may not clear until Tuesday
  • Document processing: "Response within 10 business days" — plan follow-up timing accordingly
  • Project deadlines: "Due in 15 business days" — calculate the actual calendar date to put in your planner
  • Leave requests: "Submit 3 business days in advance" — count back from your leave date

Frequently Asked Questions

Does the current day count as a business day?
Typically no. The day you place an order or submit a request is Day 0, and counting starts from the next business day. Some companies count differently, so check their policy if the timing is important.
What if a holiday falls on a Monday?
That Monday is skipped, just like a weekend day. If a company says "ships in 3 business days" and Monday is a holiday, Day 1 is Tuesday. The timeline shifts by one day for each holiday in the period.
Are business days the same in every country?
No. Most countries use Monday–Friday, but some regions observe Friday–Saturday weekends or have different official working days. Bank holidays also vary by country. When working internationally, confirm the specific calendar in use.
Is there a tool to calculate business days automatically?
Yes. A business days calculator lets you enter a start date and end date (or a number of business days to add) and instantly get the result — no manual counting needed, even across long holiday periods.

Summary

  • Business days = weekdays (Mon–Fri), excluding public holidays
  • Counting starts the day after the request — the request day is Day 0
  • Weekends and holidays are skipped entirely — plan for this during holiday seasons
  • "Within 3 business days" and "3 business days later" have slightly different meanings

Save time on manual counting with these tools: