Ireland Business Day Calculator
Last reviewed: October 14, 2026 · Holiday data: October 7, 2026
Calculate business days in Ireland with the ten public holidays of the Organisation of Working Time Act 1997 pre-loaded, St Brigid's Day included since 2023 (S.I. No. 50 of 2022), plus Good Friday, for any deadline that runs against Irish working days.
How Irish Business Days Are Defined
In Ireland, business days are Monday to Friday, less the public holidays below, Good Friday, and any weekday beside a weekend public holiday on which banks and Government offices both close. Good Friday is not a public holiday under the Organisation of Working Time Act 1997, but civil-service Circular 5/1984 lists it among the public holidays granted to civil servants and the Banking & Payments Federation Ireland's bank-holiday lists close the banks on it, so this calculator counts it as closed. Not every institution closes on the same days. The banks' lists also carry a third Christmas bank holiday, which is not a public holiday and which this calculator counts as a business day; after a Saturday public holiday they close a weekday that the calculator leaves out only where a Government department's own closure list shows it closed as well. The note on bank holidays below lists the dates. T2, the Eurosystem's real-time gross settlement system, is open Monday to Friday and, for euro settlement, also closed on 1 January, Good Friday, Easter Monday, 1 May, 25 December and 26 December (European Central Bank). Of those, 1 May is an Irish public holiday only when it is the first Monday in May: add it under Advanced options when a count must leave out T2's closing days as well.
Sources for these rules
- Bank Holidays - Republic of Ireland 2025-2027: Good Friday 18 April 2025, 3 April 2026 and 26 March 2027; Christmas bank holidays 25, 26 and 29 December 2025, 25, 28 and 29 December 2026, and 27, 28 and 29 December 2027 (Banking & Payments Federation Ireland)
- Bank Holidays - Republic of Ireland 2023-2025: 2024 St Patrick's Day bank holiday Monday 18 March; Good Friday and a third Christmas bank holiday each year (Banking & Payments Federation Ireland (archived copy))
- Public Holidays: the ten public holidays and their 2026 dates; the benefit for a public holiday is a paid day off on that day, a paid day off within a month, an additional day of annual leave or an additional day's pay; where the holiday falls on a Saturday or Sunday, in the Commission's words, there is no legal entitlement to have the next working day off work; Good Friday is not a public holiday (Workplace Relations Commission)
- Circular 5/1984, Public and Privilege Holidays (Minister for the Public Service), paragraph 2: the public holidays to be granted to civil servants, Good Friday among them; paragraph 3: when a public holiday falls on a Sunday, Government offices will be closed on the following day; paragraph 4: when it falls on a Saturday, a day off on the following Monday (for Christmas Day, Tuesday 28 December; for New Year's Day, 31 December or 3 January as each Department designates) may be granted (circulars.gov.ie (Government of Ireland))
- Public and Bank Holiday List 2026: Good Friday 3 April, and Monday 28 December (in lieu of Saturday 26 December) for St Stephen's Day (Department of Justice, Home Affairs and Migration)
- What is T2?: T2 is the Eurosystem's real-time gross settlement (RTGS) system; it is open from Monday to Friday and, for euro settlement, also closed on 1 January, Good Friday, Easter Monday, 1 May, 25 December and 26 December (European Central Bank)
Checked October 12, 2026. All sources
Ireland Public Holidays (Republic of Ireland)
The 10 statutory public holidays are:
- New Year's Day (January 1)
- St Brigid's Day (first Monday in February, except when Feb 1 is a Friday)
- St Patrick's Day (March 17)
- Easter Monday (variable, Monday after Easter Sunday)
- May Day (first Monday in May)
- June Bank Holiday (first Monday in June)
- August Bank Holiday (first Monday in August)
- October Bank Holiday (last Monday in October)
- Christmas Day (December 25)
- St Stephen's Day (December 26)
Each is a public holiday on its own date, weekend or not: the Act moves none of them, and the Workplace Relations Commission states there is no legal entitlement to have the next working day off. The Banking & Payments Federation Ireland's bank-holiday lists close the banks on the next free weekday after each weekend public holiday they cover. Government offices close it after a Sunday one (civil-service Circular 5/1984); after a Saturday one the circular only lets a department grant its staff a day off. The calculator excludes that weekday where banks and Government offices both close it, which after a Saturday holiday means a department's own closure list shows it closed, and lists it as (additional); otherwise it counts the weekday as a business day. Good Friday is not one of the ten, and the calculator excludes it too, listed as (additional): Circular 5/1984 lists it among the public holidays granted to civil servants, and the banks' lists close on it. How we determine holidays →
Sources for these dates
- Public Holidays: the ten public holidays and their 2026 dates; the benefit for a public holiday is a paid day off on that day, a paid day off within a month, an additional day of annual leave or an additional day's pay; where the holiday falls on a Saturday or Sunday, in the Commission's words, there is no legal entitlement to have the next working day off work; Good Friday is not a public holiday (Workplace Relations Commission)
- S.I. No. 50 of 2022, Organisation of Working Time (Covid-19 Commemoration) Regulations 2022, regulations 4 and 5: the first Monday in February from 2023, or 1 February when it falls on a Friday, is a public holiday under the Second Schedule to the Act of 1997; explanatory note: in celebration of Imbolc/St. Brigid's day (Irish Statute Book)
- Circular 5/1984, Public and Privilege Holidays (Minister for the Public Service), paragraph 2: the public holidays to be granted to civil servants, Good Friday among them; paragraph 3: when a public holiday falls on a Sunday, Government offices will be closed on the following day; paragraph 4: when it falls on a Saturday, a day off on the following Monday (for Christmas Day, Tuesday 28 December; for New Year's Day, 31 December or 3 January as each Department designates) may be granted (circulars.gov.ie (Government of Ireland))
- Bank Holidays - Republic of Ireland 2025-2027: Good Friday 18 April 2025, 3 April 2026 and 26 March 2027; Christmas bank holidays 25, 26 and 29 December 2025, 25, 28 and 29 December 2026, and 27, 28 and 29 December 2027 (Banking & Payments Federation Ireland)
- Bank Holidays - Republic of Ireland 2023-2025: 2024 St Patrick's Day bank holiday Monday 18 March; Good Friday and a third Christmas bank holiday each year (Banking & Payments Federation Ireland (archived copy))
- Bank Holidays - Republic of Ireland 2020-2022: for Saturday holidays, bank holidays on Monday 28 and Tuesday 29 December 2020 and on Monday 3 January 2022 (New Year's Day) (Banking & Payments Federation Ireland (archived copy))
- Public and Bank Holiday List 2026: Good Friday 3 April, and Monday 28 December (in lieu of Saturday 26 December) for St Stephen's Day (Department of Justice, Home Affairs and Migration)
Checked October 12, 2026. All sources
Bank holidays this calendar counts as business days
This calendar treats as closed Ireland's ten public holidays, Good Friday, and a weekday on which banks and Government offices both close in place of a public holiday that falls on a weekend. The Banking & Payments Federation Ireland's bank-holiday list closes the banks on more weekdays than that, so a count of bank business days that runs across a date the list closes and this calendar counts as a business day has one day fewer for each such date than this calendar shows.
Bank holidays this calendar counts as business days, for every year a bank list covers:
- Friday, December 27, 2024: Christmas bank holiday
- Monday, December 29, 2025: Christmas bank holiday
- Tuesday, December 29, 2026: Christmas bank holiday
- Tuesday, December 28, 2027: Christmas bank holiday
- Wednesday, December 29, 2027: Christmas bank holiday
No date listed here is a public holiday under the Organisation of Working Time Act 1997. Civil-service Circular 5/1984 does not close Government offices on such a date: after a Saturday public holiday it only lets a department give its staff a day off, and its list of public holidays has no third day at Christmas.
Sources: Banking & Payments Federation Ireland, Bank Holidays - Republic of Ireland 2025-2027 (in the register); Banking & Payments Federation Ireland, Bank Holidays - Republic of Ireland 2023-2025 (archived copy) (in the register); circulars.gov.ie (Government of Ireland), Circular 5/1984, Public and Privilege Holidays (in the register). Checked October 12, 2026.
Common Use Cases in Ireland
The Revenue deadlines that follow are calendar dates, not business-day counts. VAT is filed and paid by the 19th day of the month after each two-month taxable period, or the 23rd for ROS filers; an employer pays the PAYE liability within 14 days after the end of each month, or 23 days on ROS; and a company files its CT1 return and pays any tax due on or before the 23rd of the ninth month after its accounting period ends (the 21st if it does not file and pay electronically). The European Communities (Late Payment in Commercial Transactions) Regulations 2012, as amended in 2013, 2014 and 2016, set statutory late-payment interest at the ECB main refinancing rate plus 8 percentage points, running from the day after the relevant payment date; between undertakings the contract may vary the interest, provided the result is not grossly unfair to the creditor. Where the contract specifies no date or period for payment, that date falls 30 calendar days after the purchaser receives the invoice, after the goods or services are delivered where the invoice arrives first or its date of receipt is uncertain, or after an acceptance or verification procedure where one applies and the invoice arrives no later than it. The EU option of the Late Payment Interest Calculator applies the ECB main refinancing rate plus 8 percentage points, fixed each half-year. A complaint presented to the Workplace Relations Commission under section 41 of the Workplace Relations Act 2015 is not entertained more than six months after the date of the contravention it concerns (s 41(6)); an adjudication officer may entertain it up to six months later where the delay was due to reasonable cause (s 41(8)).
Sources for these rules
- When VAT becomes payable: file and pay VAT by the 19th day of the month following the end of each taxable period, extended to the 23rd day of the month for ROS filers; the taxable period is a two-month period commencing on the first day of January, March, May, July, September and November (Revenue (Office of the Revenue Commissioners))
- Paying tax to Revenue: the monthly statement shows the employer's total tax liability for the reference month based on payroll submissions during that month; the employer must pay within 14 days after the end of each month, or 23 days after the end of the month if it files and pays on ROS (Revenue (Office of the Revenue Commissioners))
- Corporation Tax payment and filing: a company must file its return, and pay any tax due, nine months after the end of the accounting period, on or before the 23rd of the ninth month (the 21st where it does not pay and file electronically) (Revenue (Office of the Revenue Commissioners))
- S.I. No. 580 of 2012, European Communities (Late Payment in Commercial Transactions) Regulations 2012, as made: regulation 2(1), relevant payment date; regulation 5(1), the ECB main refinancing rate plus 8 percentage points. Amended by S.I. No. 74 of 2013, S.I. No. 196 of 2014 and S.I. No. 281 of 2016 (Irish Statute Book)
- S.I. No. 74 of 2013, European Communities (Late Payment in Commercial Transactions) (Amendment) Regulations 2013, regulation 2: regulation 4 substituted; 4(2), interest for the period beginning on the day after the relevant payment date (Irish Statute Book)
- S.I. No. 196 of 2014, European Communities (Late Payment in Commercial Transactions) (Amendment) Regulations 2014, regulation 2: relevant payment date, 30 calendar days after the later of receipt of the invoice or delivery, or after an acceptance or verification procedure; regulation 5(1) now subject to paragraph (3); regulation 5(3), between undertakings the parties may vary the interest provided it is not grossly unfair to the creditor (Irish Statute Book)
- S.I. No. 281 of 2016, European Communities (Late Payment in Commercial Transactions) (Amendment) Regulations 2016, regulation 3: the definition of relevant payment date in regulation 2(1) amended; paragraph (a) substituted: between undertakings a date or period for payment that exceeds 60 calendar days must be expressly agreed in the contract and not be grossly unfair to the supplier (Irish Statute Book)
- Workplace Relations Act 2015, s 41(6): a complaint presented more than 6 months after the date of the contravention is not entertained; s 41(8): up to 6 months more where the delay was due to reasonable cause (Irish Statute Book)
Checked October 12, 2026. All sources
Sources and verification
Official source: Workplace Relations Commission (workplacerelations.ie) (opens in a new tab)
Cross-checked against this source on October 7, 2026.
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
What are Ireland's public holidays?
When is St Brigid's Day?
Does Ireland move a public holiday that falls on a weekend?
How does this differ from the UK calculator?
How many business days are in an Irish working year?
Ireland working days by month
Working-day counts, calendar grids, and Irish holidays for each of the next 13 months.