Ireland Business Day Calculator

In Ireland, business days are Monday through Friday, excluding the 10 statutory public holidays under the Organisation of Working Time Act 1997. Most Irish commercial contracts, Revenue tax deadlines, and Companies Registration Office (CRO) filings use this definition. Banks, Euronext Dublin, and the TARGET2-IE Euro clearing system all observe the same public holiday schedule.

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)

When New Year's Day, St Patrick's Day, Christmas Day, or St Stephen's Day falls on a weekend, the public holiday entitlement shifts to the next working day. How we determine holidays →

Irish business-day math drives Revenue Online Service (ROS) cycles: VAT3 returns are due on the 19th (paper) or 23rd (ROS) of the month after the bimonthly period, PAYE remittance via PAYE Modernisation is due by the 14th of the month after pay, and Form CT1 corporation tax is due nine months after 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; the Late Payment Interest Calculator computes the running balance against that rate. Workplace Relations Commission complaints under the Workplace Relations Act 2015 must be lodged within six months of the act complained of.