Business Days in May 2026 for Ireland
May 2026 has 20 working days under the Irish public holiday calendar. May 2026 contains one Irish public holiday on a weekday. 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 Ireland.
working days
20
Calendar Days
31
Weekend Days
10
public holidays
1
Work Weeks
4.0
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
1 | 2 wknd | 3 wknd | ||||
4 May Day | 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 | 28 | 29 | 30 wknd | 31 wknd |
public holidays in May 2026
Ireland May deadlines
Form CT1 for August year-end companies is due May 23. VAT3 for March-April bimonthly is due May 19 or May 23 via ROS. The May Day Bank Holiday on the first Monday closes banks and Euronext Dublin. Workplace Relations Commission (WRC) complaint windows under the Workplace Relations Act 2015 typically run six months from the date of the act complained of; mid-year claim cycles peak in May.
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 day of the week landing in-month.
| Day | Count |
|---|---|
| Monday | 4 |
| Tuesday | 4 |
| Wednesday | 4 |
| Thursday | 4 |
| Friday | 5 |
| Saturday | 5 |
| Sunday | 5 |
Ireland reporting cycles and business-day rules
Irish business-day cycles align with Revenue's VAT3 bimonthly cutoffs (paper on the 19th, ROS extended to the 23rd) and PAYE monthly remittance on the 14th of the following month for most employers, with the PAYE Modernisation system reporting in real time on each pay event. The Central Bank of Ireland operates TARGET2-IE for euro wholesale settlement on TARGET2 business days, which exclude bank holidays. Form CT1 corporation tax is due nine months after the company year-end. The European Communities (Late Payment in Commercial Transactions) Regulations 2012 set 8% above the ECB main refinancing rate as the statutory late-payment interest rate, payable from day 31 after invoice for B2B transactions.
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 Ireland alongside the other ten supported holiday calendars for May 2026.
| 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 | 19 | Labor Day, Eid'l Adha |
| 🇫🇷France | 17 | Fête du Travail, Fête de la Victoire 1945, Ascension, Lundi de Pentecôte |
| 🇩🇪Germany | 18 | Tag der Arbeit, Christi Himmelfahrt, Pfingstmontag |
| 🇯🇵Japan | 18 | Greenery Day, Children's Day, Constitution Memorial Day (observed) |
| 🇲🇽Mexico | 20 | Día del Trabajo |
| 🇸🇬Singapore | 19 | Labour Day, Hari Raya Haji |
How May 2026 compares year over year
May 2025 had 21 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 20 working days under the same Irish public holiday calendar.
Using this calculator in Ireland
A Dublin treasury operator at an international tech HQ uses the 20-day May 2026 count to align SEPA Credit Transfer cycles with Central Bank of Ireland TARGET2-IE clearing and prompt-pay windows under the European Communities (Late Payment in Commercial Transactions) Regulations 2012. A Cork law-firm cashier uses business-day math to track Workplace Relations Commission complaint windows under the Workplace Relations Act 2015. A Galway SaaS controller uses the count to align Revenue VAT3 bimonthly returns and ROS Form CT1 nine-month corporation-tax filings against month-end cutoffs.
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.