Business Days in May 2027
May 2027 has 20 business days under the US federal holiday calendar. May 2027 contains one US federal holiday. The month covers 31 calendar days, of which 10 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
20
Calendar Days
31
Weekend Days
10
Holidays
1
Work Weeks
4.0
| Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|
1 wknd | ||||||
2 wknd | 3 | 4 | 5 | 6 | 7 | 8 wknd |
9 wknd | 10 | 11 | 12 | 13 | 14 | 15 wknd |
16 wknd | 17 | 18 | 19 | 20 | 21 | 22 wknd |
23 wknd | 24 | 25 | 26 | 27 | 28 | 29 wknd |
30 wknd | 31 Memorial Day |
Holidays in May 2027
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 2027. Useful for shift scheduling, weekly recurring billing, and any rota that depends on a specific day of the week landing in-month.
| Day | Count |
|---|---|
| Monday | 5 |
| Tuesday | 4 |
| Wednesday | 4 |
| Thursday | 4 |
| Friday | 4 |
| Saturday | 5 |
| Sunday | 5 |
Business Days in May 2027 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.
| Country | Business Days | Holidays this month |
|---|---|---|
| 🇺🇸United States | 20 | Memorial Day |
| 🇬🇧United Kingdom | 19 | Early May Bank Holiday, Spring Bank Holiday |
| 🇨🇦Canada | 20 | Victoria Day |
| 🇦🇺Australia | 21 | None |
| 🇮🇳India | 20 | Eid ul-Adha |
| 🇵🇭Philippines | 20 | Eid'l Adha (approximate) |
| 🇫🇷France | 19 | Ascension, Lundi de Pentecôte |
| 🇩🇪Germany | 19 | Christi Himmelfahrt, Pfingstmontag |
| 🇯🇵Japan | 18 | Constitution Memorial Day, Greenery Day, Children's Day |
| 🇲🇽Mexico | 21 | None |
| 🇸🇬Singapore | 19 | Hari Raya Haji (observed) (approximate), Vesak Day (approximate) |
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 2027 Compares
May 2026 also had 20 business days, so the working capacity is unchanged year over year. On the surrounding months, April 2027 has 22 business days and June 2027 has 21. Looking forward, May 2028 will have 22 business days under the same federal holiday calendar.
Using This Calculator
A receivables analyst running a Net 30 portfolio uses the 20-business-day count in May 2027 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 2027, 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.