The number of business days in a month affects your deadlines, payroll cycles, and project timelines. Most months have between 19 and 23 business days in a month before public holidays are removed. The exact number depends on the month, the country you work in, and which public holidays fall on weekdays.
Use the free business days between dates calculator to count exact working days for any period.
How Many Business Days Are in a Month on Average?
The standard working week runs Monday to Friday. A month with no public holidays has between 20 and 23 business days depending on how many weekdays it contains.
Months with 31 days hold up to 23 weekdays when the month starts on a Monday. Months with 28 days, like February, rarely exceed 20. Public holidays on weekdays reduce those counts further.
21 business days is the average across the year. For deadline accuracy, check the exact count for your specific month and country.
For deadline accuracy, check the exact count of business days in a month for your specific country.
2026 Business Days Per Month — US, UK, South Africa and Australia
This table shows the exact number of business days in a month for 2026 across four countries. Each figure excludes weekends and national public holidays that fall on weekdays. US figures verified against the US Office of Personnel Management. UK figures verified against gov.uk. South Africa figures verified against gov.za. Australian figures verified against the Fair Work Ombudsman. Holiday data comes from Nager.Date.
| Month | US | UK (Eng/Wales) | South Africa | Australia (National) |
| January | 20 | 21 | 21 | 20 |
| February | 19 | 20 | 20 | 20 |
| March | 22 | 22 | 22 | 22 |
| April | 22 | 20 | 19 | 20 |
| May | 20 | 19 | 20 | 21 |
| June | 21 | 22 | 21 | 21 |
| July | 22 | 23 | 23 | 23 |
| August | 21 | 20 | 20 | 21 |
| September | 21 | 22 | 21 | 22 |
| October | 21 | 22 | 22 | 22 |
| November | 19 | 21 | 21 | 21 |
| December | 22 | 21 | 21 | 21 |
| Total | 250 | 253 | 251 | 254 |
Australian figures use national public holidays only. State-level holidays vary and reduce counts further depending on your location.
Which Month Has the Most Business Days in 2026?
July 2026 has the most business days across all four countries with 22 to 23 working days. No national public holidays fall in July in the US, UK, South Africa, or Australia. The UK reaches 23 because July has 23 weekdays and no bank holidays remove any of them. July gives you the most business days in a month across all four countries covered here.
Which Month Has the Fewest Business Days in 2026?
February and November tie for the fewest in the US with 19 each. February is short because Presidents Day removes one weekday from an already short month. November loses Veterans Day on Wednesday November 11 and Thanksgiving on Thursday November 26.
In South Africa, April has the fewest with 19. Good Friday, Family Day, and Freedom Day all fall on weekdays. In the UK and Australia, May has the fewest with 19 and 20 respectively.
Why Does the Number of Business Days Change Each Month?
Three factors determine the number of business days in a month.
Total days in the month. Months with 31 days have more potential weekdays than months with 28. February always starts at a disadvantage.
How weekends fall. A month starting on a Monday gives you the maximum number of weekdays. A month starting on a Saturday or Sunday loses working days at both ends of the period.
Public holidays on weekdays. Every public holiday that falls Monday through Friday removes one business day. When two or three fall in the same month, the count drops sharply.
The same month has different business day counts depending on where you work. April 2026 has 22 business days in the US but only 19 in South Africa. The US does not observe Easter at the federal level. South Africa observes Good Friday, Family Day, and Freedom Day. Three weekday holidays fall in April alone.
How Do Business Days Differ From Calendar Days?
Knowing the difference between calendar days and business days in a month matters for every deadline you set. Calendar days count every day of the week. Business days count weekdays only and skip public holidays.
The difference matters for deadlines. A 30-calendar-day deadline ends exactly one month later. A 30-business-day deadline takes roughly six calendar weeks. Public holidays extend the count further.
Before calculating a deadline, check whether your contract or invoice specifies business days or calendar days. Use the business days between dates calculator to get the exact count for your specific dates and country. To work backwards from a deadline, use the subtract business days from a date calculator to find your preparation start date.
What Does This Mean for Payroll and Project Planning?
The number of business days in a month directly affects your billing cycles and payroll windows. November and February are the tightest in 2026. December, July, and March offer the most working time across most countries.
Tightest months for billing and payroll. February has 19 business days in the US. So does November. Veterans Day and Thanksgiving both fall on weekdays that month. Plan for shorter processing windows in both.
Best months for project sprints. July 2026 reaches 22 to 23 business days across all four countries. No national public holidays fall in July in any of these countries. March also reaches 22 across the US, UK, South Africa, and Australia. Major launches, audits, or reviews scheduled in these months benefit from the extra capacity.
International teams need country-specific counts. A team split across the US and South Africa has different effective working months. April 2026 is a 22-day month for US team members but only 19 days for South African colleagues. That three-day gap affects project timelines, review cycles, and client deadlines.
Use the notice period calculator if you need to calculate working days for HR or employment purposes.
Frequently Asked Questions
The questions below cover the most common queries about business days in a month across different countries and scenarios.
| Question | Answer |
| How many business days are in a month? | Most months have between 19 and 23 business days before public holidays are removed. The exact count depends on the month, the year, and which country’s public holidays apply. |
| Which month has the most business days in 2026? | July 2026 has the most across all four countries — 22 in the US and South Africa, 23 in the UK and Australia. No national public holidays fall in July in any of these countries. |
| Which month has the fewest business days in 2026? | In the US, February and November both reach 19. In South Africa, April has the fewest with 19 due to three public holidays falling on weekdays. In the UK and Australia, May has the fewest. |
| How many business days are in February 2026? | February 2026 has 19 business days in the US. Presidents Day removes one weekday from an already short month. The UK, South Africa, and Australia all have 20 business days in February 2026. |
| Do public holidays count as business days? | No. Public holidays are excluded from the business day count when you select the relevant country in the calculator. |
| How do I calculate business days in a month? | Count the weekdays in the month and subtract any public holidays falling on those weekdays. For an accurate result, use the free business days between dates calculator and select your country. |
Related Calculators
- Business Days Between Two Dates
- Add Business Days to a Date
- Subtract Business Days from a Date
- Notice Period Calculator
- Deadline Calculator
Last updated: June 2026. Business day counts verified against official 2026 public holiday calendars for each country.