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Business Day Calculator

Business Days in May 2025

May 2025 has 21 business days under the US federal holiday calendar. May 2025 contains one US federal holiday. The month covers 31 calendar days, of which 9 fall on a weekend. That count drives invoice due dates, payroll cycles, project sprint planning, and any contract that defines deadlines as a number of working days.

Business Days

21

Calendar Days

31

Weekend Days

9

Holidays

1

Work Weeks

4.2

May 2025 business day calendar
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Memorial Day
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Holidays in May 2025

Mon, May 26Memorial Day

The last Monday of May. Federal offices close along with the bond market and the NYSE. It marks the unofficial start of the US summer season, which has knock-on effects: warehouse and freight schedules shift earlier in the week, and finance teams often see a Friday-heavy invoice pre-funding pattern.

Day-of-Week Distribution

The count of each weekday in May 2025. Useful for shift scheduling, weekly recurring billing, and any rota that depends on a specific day of the week landing in-month.

DayCount
Monday4
Tuesday4
Wednesday4
Thursday5
Friday5
Saturday5
Sunday4

Business Days in May 2025 by Country

Working-day counts vary by country because each country observes its own public holidays. The table below covers all eleven holiday calendars supported on this site.

CountryBusiness DaysHolidays this month
๐Ÿ‡บ๐Ÿ‡ธUnited States21Memorial Day
๐Ÿ‡ฌ๐Ÿ‡งUnited Kingdom20Early May Bank Holiday, Spring Bank Holiday
๐Ÿ‡จ๐Ÿ‡ฆCanada21Victoria Day
๐Ÿ‡ฆ๐Ÿ‡บAustralia22None
๐Ÿ‡ฎ๐Ÿ‡ณIndia22None
๐Ÿ‡ต๐Ÿ‡ญPhilippines21Labor Day
๐Ÿ‡ซ๐Ÿ‡ทFrance19Fรชte du Travail, Fรชte de la Victoire 1945, Ascension
๐Ÿ‡ฉ๐Ÿ‡ชGermany20Tag der Arbeit, Christi Himmelfahrt
๐Ÿ‡ฏ๐Ÿ‡ตJapan20Children's Day, Greenery Day (observed)
๐Ÿ‡ฒ๐Ÿ‡ฝMexico21Dรญa del Trabajo
๐Ÿ‡ธ๐Ÿ‡ฌSingapore20Labour Day, Vesak Day

Notable May Deadlines

May contains Memorial Day, the unofficial start of summer logistics planning. Public companies wrap up Q1 earnings season in the first half of the month. The Annual ERISA Form 5500 prep cycle starts for plans with December year-ends, with the filing deadline July 31 (or October 15 with extension).

How May 2025 Compares

May 2024 had 22 business days, so May 2025 has 1 fewer working day year over year. On the surrounding months, April 2025 has 22 business days and June 2025 has 20. Looking forward, May 2026 will have 20 business days under the same federal holiday calendar.

Using This Calculator

A receivables analyst running a Net 30 portfolio uses the 21-business-day count in May 2025 to project cash collections by Friday of each week and to flag invoices whose due dates land on the holidays listed above. A project manager scoping a sprint that starts on the first business day of May uses the calendar grid to slot stand-ups, design reviews, and customer demos onto live working days rather than weekends. A specialty contractor billing time and materials uses the day-of-week distribution to see how many Mondays and Fridays fall in May 2025, which matters for crews who set installation appointments at the start and end of each week and skip Tuesday-to-Thursday for travel-heavy jobs.

For informational purposes only

This calculator provides general estimates based on business day counting rules. It does not constitute legal advice. Deadlines in legal, regulatory, or contractual matters may be subject to jurisdiction-specific rules, court orders, or statutory exceptions. Always verify critical deadlines with a qualified professional.

Frequently Asked Questions

How many business days are in May 2025?
May 2025 has 21 business days under the US federal holiday calendar. The month spans 31 calendar days, of which 9 fall on Saturday or Sunday and 1 is a federal holiday that lands on a weekday. The remaining 21 weekdays are countable as business days for invoicing, SLA windows, and contract math.
Are there any holidays in May 2025?
May 2025 contains one US federal holiday: Memorial Day on Monday, May 26. Federal offices, the Federal Reserve, and US capital markets close on each of these days. State holidays and bank-specific closures may add additional non-working days for narrower contract definitions.
How does May 2025 compare to May 2024?
May 2024 had 22 business days, so May 2025 has 1 fewer working day year over year. The shift is driven by where weekends and federal holidays fall on the calendar in each year, not by any change in the number of holidays themselves. May 2025 starts on a Thursday and May 2024 started on a Wednesday, which determines how many of each weekday land in-month.
Why does the business-day count vary year to year?
Two things shift the monthly count. First, the day of the week the first of the month lands on changes the count of each weekday: a 31-day month starting on a Friday produces five Fridays, five Saturdays, and five Sundays, while one starting on a Monday produces five Mondays, five Tuesdays, and five Wednesdays. Second, federal holidays anchored to a fixed date (Independence Day, Veterans Day, Christmas Day) shift their weekday across years; some years the holiday lands on a weekend and the observance moves to the adjacent Friday or Monday, which keeps the business-day count steady but changes which weekday is excluded.
What if I need business days for a different country?
Use the country selector in the calculator above, or visit the dedicated country pages for the United Kingdom, Canada, Australia, India, the Philippines, France, Germany, Japan, Mexico, or Singapore. Each calculator excludes that country's national public holidays. The country comparison table further down this page shows the May 2025 business-day count under each of the eleven supported holiday calendars side by side.

Related months and resources