What the tax system covers
Irish-resident companies are generally taxed on worldwide profits. Trading and nontrading income have different rate rules, while foreign distributions and establishments may have specific relief or exemption conditions.
When a company becomes tax resident
An Irish-incorporated company is generally Irish tax resident unless a tax treaty treats it as resident elsewhere. A foreign-incorporated company can be resident through central management and control in Ireland. Revenue’s analysis considers where policy, investment decisions and major contracts are determined, alongside the broader management facts. A founder moving to Ireland should assess the company before continuing to direct it from an Irish home.
Rates and the tax base
12.5% trading; 25% nontrading. Classification of trading activity is material. The global minimum-tax framework for in-scope groups is a separate calculation and should not be inferred from these ordinary headline rates.
Outbound dividends, interest and royalties
Dividends: 25% before exemptions. Irish resident companies ordinarily deduct 25% DWT. Qualifying nonresident recipients can claim domestic exemptions with the required declarations; residence in a treaty country alone does not replace the paperwork.
Interest: 20% covered yearly interest; broad exemptions. Covered yearly interest is subject to deduction at the standard income-tax rate. Statutory company-recipient, quoted-debt and other exclusions mean many commercial payments are exempt; verify the exact conditions and paperwork.
Royalties: 20% covered patent royalties; exemptions available. The withholding framework covers patent royalties and other annual-payment categories; it is not a universal tax on every rights payment. Domestic exceptions, administrative treatment and treaty relief must be checked against the actual contract.
Foreign companies and income attribution
Irish corporate CFC rules attribute relevant undistributed income to a controlling or connected Irish company where relevant Irish activities occur.
Departure, migration and continuing obligations
Corporate exit tax ordinarily applies at 12.5% on relevant unrealised gains, with an anti-avoidance rule and conditional five-year instalments. Personal ordinary residence can continue for three tax years; this is a separate mechanism.
Sources & research notes8 references
Sources supporting this guide. Research draft awaiting editorial review.
- Irish Revenue — corporation tax scope and rates
- Irish Revenue: company residence
- Irish Revenue: controlled foreign company rules
- Irish Revenue — dividend withholding tax
- Irish Revenue — 2026 personal income-tax rates and bands
- Irish Revenue — yearly-interest and royalty deduction framework
- Irish Revenue: corporate exit-tax provisions
- Irish Revenue: ordinary residence after departure
