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Business Day Calculator

Business Days in May 2026 for Singapore

May 2026 has 19 working days under the Singapore gazetted holiday calendar. May 2026 contains 2 Singapore gazetted holidays on weekdays. The month covers 31 calendar days, of which 10 are Saturday and Sunday. That count drives invoice cycles, payroll runs, and any contract that defines deadlines as a number of working days in Singapore.

working days

19

Calendar Days

31

Weekend Days

10

public holidays

2

Work Weeks

3.8

May 2026 business day calendar
MonTueWedThuFriSatSun
1
Labour Day
2
wknd
3
wknd
4
5
6
7
8
9
wknd
10
wknd
11
12
13
14
15
16
wknd
17
wknd
18
19
20
21
22
23
wknd
24
wknd
25
26
27
Hari Raya Haji (approximate)
28
29
30
wknd
31
wknd

public holidays in May 2026

Fri, May 1Labour Day
Wed, May 27Hari Raya Haji (approximate)

Singapore May deadlines

May 1 (Labour Day) and Vesak Day close banks and SGX. CPF contributions for April are due May 14. The corporate income tax filing season opens for FY-end-December entities, with paper-form filings due November 30 and e-filing due December 15. The first quarterly GST submission of the calendar year settles.

Day-of-week distribution

The count of each weekday in May 2026. Useful for shift scheduling, weekly recurring billing, and any rota that depends on a specific weekday landing in-month.

DayCount
Monday4
Tuesday4
Wednesday4
Thursday4
Friday5
Saturday5
Sunday5

Singapore reporting cycles and business-day rules

Singapore business-day cycles align with CPF contributions due by the 14th of the following month, IRAS GST quarterly returns due by the last day of the month after each quarter-end, and MAS-supervised SGD clearing. The G3 (FAST) and PayNow systems operate around the clock; the high-value MEPS+ system clears same-day. ACRA annual-return filings are due within seven months of the financial year-end. The MAS Monetary Policy Statement publishes semi-annually in April and October, with associated SGD-NEER band updates that move FX desks.

May 2026 working days compared by country

Working-day counts vary across countries because each country observes its own public holidays. The table below puts Singapore alongside the other ten supported holiday calendars for May 2026.

CountryBusiness DaysHolidays this month
๐Ÿ‡บ๐Ÿ‡ธUnited States20Memorial Day
๐Ÿ‡ฌ๐Ÿ‡งUnited Kingdom19Early May Bank Holiday, Spring Bank Holiday
๐Ÿ‡จ๐Ÿ‡ฆCanada20Victoria Day
๐Ÿ‡ฆ๐Ÿ‡บAustralia21None
๐Ÿ‡ฎ๐Ÿ‡ณIndia20Buddha Purnima / Eid ul-Adha
๐Ÿ‡ต๐Ÿ‡ญPhilippines19Labor Day, Eid'l Adha
๐Ÿ‡ซ๐Ÿ‡ทFrance17Fรชte du Travail, Fรชte de la Victoire 1945, Ascension, Lundi de Pentecรดte
๐Ÿ‡ฉ๐Ÿ‡ชGermany18Tag der Arbeit, Christi Himmelfahrt, Pfingstmontag
๐Ÿ‡ฏ๐Ÿ‡ตJapan18Greenery Day, Children's Day, Constitution Memorial Day (observed)
๐Ÿ‡ฒ๐Ÿ‡ฝMexico20Dรญa del Trabajo
๐Ÿ‡ธ๐Ÿ‡ฌSingapore (this page)19Labour Day, Hari Raya Haji (approximate)

How May 2026 compares year over year

May 2025 had 20 working days, so May 2026 has 1 fewer working day year over year. On the surrounding months, April 2026 has 21 working days and June 2026 has 21. Looking forward, May 2027 has 19 working days under the same Singapore gazetted holiday calendar.

Using this calculator in Singapore

A Singapore-headquartered regional treasury team uses the 19-day May 2026 count to align CPF contribution due dates on the 14th with IRAS GIRO direct-debit cycles and MAS-supervised SGD clearing. A Tanjong Pagar law firm uses business-day math to track ROT (Rules of Court 2021) procedural windows. A Jurong logistics firm uses the count to align ACRA annual-return filings with calendar-year audit cycles.

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 2026 for Singapore?
May 2026 has 19 working days under the Singapore gazetted holiday calendar. The month spans 31 calendar days, of which 10 fall on a weekend and 2 are Singapore gazetted holidays that lands on a weekday. The remaining 19 weekdays are countable as working days for invoicing, deadline tracking, and contract math.
Which Singapore holidays affect May 2026?
May 2026 contains 2 Singapore gazetted holidays: Labour Day on Friday, May 1; Hari Raya Haji (approximate) on Wednesday, May 27. Banks and Singapore financial markets close on each of these days. Regional or industry-specific closures may add further non-working days for narrower contract definitions; layer them into the calculator's Advanced options if needed.
How does Singapore handle holiday observance shifts?
Under the Holidays Act, when a public holiday falls on a Sunday, the following Monday is a public holiday. The Act does not shift Saturday-falling holidays, so when Christmas Day or National Day lands on a Saturday, it is absorbed into the weekend without an in-lieu Monday. This calculator's Singapore data lists the observed Monday for Sunday-falling holidays. The eleven gazetted holidays include New Year's Day, Chinese New Year (two days), Good Friday, Hari Raya Puasa, Labour Day, Vesak Day, Hari Raya Haji, National Day, Deepavali, and Christmas Day.
Why does the Chinese New Year date shift each year?
Chinese New Year is determined by the lunisolar calendar and falls on the second new moon after the winter solstice, typically between January 21 and February 20. The Singapore Ministry of Manpower gazettes two days for the holiday: the first day of the lunar year and the day after. When the second day falls on a Sunday, the following Monday becomes the substitute holiday. Hari Raya Puasa, Hari Raya Haji, Deepavali, and Vesak Day similarly shift by their respective religious calendars.
Why does the business-day count vary year to year?
Two things shift the monthly count for Singapore. First, the day of the week the first of the month lands on changes the count of each weekday. Second, Singapore gazetted holidays anchored to a fixed date shift their weekday across years. Some years a fixed-date holiday lands on a weekend; some countries shift the observance to an adjacent weekday and some absorb it into the weekend. May 2025 had 20 working days, so May 2026 has 1 fewer working day year over year.

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