Ireland corporate tax rate, filing deadline, tax incentives, and exemptions explained

Why expand to Ireland?

Ireland has become a strategic European base for a lot of global businesses thanks to its competitive tax rates and pro-business environment.

Ireland is expected to be among the top five performing economies in Europe in 2026, leading to optimism among business leaders.¹ It is currently second in the European Union in terms of GDP per capita.² An, its workforce is renowned not only for being skilled but also among the most educated in the world.³

There are plenty of reasons for foreign companies to invest in Ireland – including its EU membership, stable governance, advanced infrastructure, and generous tax incentives. It's no wonder its top performing sectors – sciences, engineering, technology, financial services, and manufacturing – are mostly FDI-driven. The country is now home to more than 1,800 leading global companies.⁴

While it undoubtedly makes sense to invest in Ireland due to its low tax rates, a deep understanding of its corporate tax system is essential for a smooth and successful venture in the country.

Ireland corporate tax

Irish corporation tax is levied on corporate profits, including income and capital gains. Irish resident companies are taxed on their worldwide profits. Foreign companies are taxed on the trading profits of their branches or agencies in Ireland.

Ireland has two corporation tax rates – a standard rate for trading income and a higher rate for non-trading income from companies outside Ireland or profits from 'excepted trade' such as land dealing or development, mining, and petroleum extraction. Non-trading income, also known as passive income or investment income, includes earnings from interest and royalties, dividend income, and rental income.

Furthermore, the capital gains portion of an Irish company, which is included in its corporation tax return, is taxed separately.

Additionally, in-scope businesses – multinationals with consolidated group revenues in excess of EUR 750 million in a year – are subject to a 15% Minimum Global Tax instead of the lower corporation tax.

The Office of the Revenue Commissioners (Revenue) handles the assessment and collection of taxes and enforcement of tax laws through 70 Revenue offices across the country.

Irish corporation tax is not to be confused with Northern Ireland corporation tax. Unlike the Republic of Ireland, Northern Ireland is not a member state of the European Union but part of the United Kingdom. As such, its corporation tax rates align with UK rates, which are a standard rate of 25% and a small profits rate of 19%.

Tax rates and structures in Ireland

The Irish corporation tax rates are:

• 12.5% standard rate applicable on trading income, including qualifying foreign dividend payments made from trading profits.
  
• 25% higher rate applicable on non-trading income (example, dividend income) or on profits from land dealing and other excepted trades.
  
• Capital gains are, however, taxed separately at the rate of 33%.
  

The Global Minimum Tax applicable to in-scope businesses is a top-up tax added to a company's corporation tax burden to reach the 15% minimum effective tax rate. However, only 1% of companies in Ireland qualify as in-scope businesses. The remaining 99% are taxed at the standard 12.5% rate.

What is considered taxable income in Ireland?

Irish corporation tax is calculated on business profits for an accounting period. To calculate your taxable profit, take your company's total revenue and deduct allowable expenses.

Expenses that can be deducted for tax purposes include:

• Operating costs
  
• Start-up costs
  
• Taxes and interest
  
• Bad debt
  
• Pension contributions
  
• Donations to recognised charities
  
• Payments to foreign affiliates (such as royalties, interest, management service fees)
  
• Capital allowances on qualifying capital expenditure on land, buildings, plant and machinery, certain intellectual property, etc.
  

However, certain expenses are non-deductible for tax purposes. These include:

• Capital expenses
  
• Expenses not wholly or exclusively incurred on trade or business
  
• Entertainment expenses
  
• Fines and penalties
  
• Dividend payments
  
• Depreciation (excluding capital allowances).
  

Historical corporate tax rates and recent reforms in Ireland

Corporation tax was introduced in Ireland in 1976 (prior to that, an income tax was levied on both personal and business profits). Since then, the tax rate has varied widely – from 10% in 1981 to a peak of 50% in 1982-88. In 1998, in accordance with European Union rules, Ireland announced a 12.5% corporation tax rate together with a 25% tax rate for non-trading profits and a 20% capital gains rate. The current corporate tax system and rates came into being on January 1, 2003, and has since remained constant.⁵

In a major reform, Ireland introduced the 15% Global Minimum Tax in 2024.

Tax incentives and exemptions

While a headline corporation tax rate of 12.5% is an incentive in itself, Ireland offers several other tax advantages, including:

• R&D tax credits: These include a 30% tax credit on the full amount of qualifying R&D expenditure, and a separate tax credit on money spent on building or refurbishing a qualifying R&D building, fully payable in three fixed instalments over three years.
  
• Digital gaming tax credit: Gaming firms can receive a refundable tax credit at 32% of qualifying expenses incurred in designing and developing digital games. The maximum refund payable is EUR 25 million per project.
  
• Knowledge Development Box: This incentive comes in the form of an effective 10% corporation tax rate on profits from qualifying assets such as a computer programme, a patent-protected invention, and intellectual property small companies.
  
• Intellectual property capital allowance: Companies may receive a tax deduction for capital expenses on the acquisition of qualifying IP assets.
  
• Exemptions for start-ups: Companies set up between 2009 and 2026 are eligible for a three-year corporation tax holiday if their total tax owed does not exceed EUR 40,000 per year.
  
• Foreign tax credit: Irish resident companies are eligible for a tax credit on foreign taxes paid either directly or by way of withholding tax.
  
• Other incentives: Businesses engaged in financial services, farming, forestry, shipping, mining, property development, and film production receive special incentives while the Irish government provides cash grants for certain capital expenditures (such as on machinery, employee training, R&D, manufacturing, exports, etc).
  

When to file corporate tax returns in Ireland

In Ireland, the tax year follows the calendar year. Companies must file their corporation tax return by the 23rd day of the ninth month after the accounting period is over.

Each company is required to calculate their corporation tax in advance, based on their tax liability in preceding fiscal years. The frequency and dates for paying corporation tax differ for small companies (corporate income tax burden below EUR 200,000 in the preceding fiscal year) and large companies.

A small company pays its preliminary tax in one instalment within 31 days before the accounting period ends, but no later than the 23rd day of that month. It can choose to pay 100% of its tax liability from the immediate preceding fiscal year or 90% of its estimated liability for the current accounting period.

Large companies are allowed to make preliminary tax payments in two instalments. The first instalment is due six months from the start of the accounting period but latest by the 23rd day of the month. The taxpayer can choose to pay either 45% of their expected final tax liability or 50% of their liability from a previous period. By the second instalment – which is due 31 days before the accounting period ends but not later than the 23rd day of the month – the company must have paid 90% of its estimated tax liability for that tax year. Any balance tax must be paid by the tax filing deadline.

All corporation tax returns must be filed and tax payments made in euros electronically on the Revenue Online Service. Paper filings are not accepted.

Reducing tax burden with double taxation agreements

Ireland has double taxation agreements (DTAs) with 78 countries, with 75 of those tax treaties currently in effect.

The Singapore-Ireland DTA was signed in 2010 and modified in 2017. It ensures that companies are not taxed twice on the same income while also acting as a deterrent against tax avoidance. Under the DTA's provisions, companies that are tax residents of the two states benefit from reduced withholding tax rates on interest and royalties/patents while the dividend withholding tax is eliminated. In Ireland, the withholding tax rate on interest and royalties/patents is reduced to 5% from a non-treaty rate of 20%.

In instances where a country doesn't have a double taxation agreement with Ireland or where certain taxes aren't covered by the DTA, companies operating in Ireland can still get relief under the Taxes Consolidation Act, which protects certain types of corporate income or gains from dual taxation. These include dividends from foreign subsidiaries, foreign branch profits, foreign interest and royalties, leasing income, and capital gains on foreign assets.⁶ Business owners are advised to look into available tax relief both under and outside tax treaties to effectively reduce their Irish income tax burden.

Tax treatment of dividends in Ireland

A 25% dividend withholding tax applies to dividends and distributions made by Irish resident companies. However, an exemption from withholding tax is possible if the recipient of the dividend income is:

• Also an Irish resident company
  
• A non-resident company that is a tax resident of another EU member state
  
• A non-resident company that is a tax resident of a country with a DTA with Ireland
  
• A non-resident company controlled by the resident of a tax treaty country or EU member state
  
• A non-resident company whose shares are regularly traded on a recognised stock exchange in another EU member state or a tax treaty country, or if the dividend recipient is a 75% subsidiary of such a listed company
  
• A non-resident company that is a tax resident of another EU member state with at least 5% holding in the Irish paying company (under the Parent-Subsidiary Directive).
  

Apart from dividends, Irish tax laws mandate that tax be withheld at the rate of 20% from payments of Irish-sourced interest as well as royalties and patents. Exemptions and reduced rates are available under tax treaties and domestic tax laws.

Other taxes in Ireland

Here are the other taxes an Irish company might be required to pay:

VAT

A value added tax (VAT) is applicable on the supply of goods and services in Ireland, including imports from non-EU countries, at a top rate of 23%. However, certain supplies benefit from reduced VAT rates of 13.5% on the development and supply of immovable goods and labour-intensive services, energy products, and food and drink supplies in the course of catering, and 9% on the supply of magazines and other periodicals, and on the provision of sporting facilities.

Certain supplies are eligible for zero-rated VAT, such as food and drinks for human consumption, oral medicines, books and newspapers, solar panels, children’s clothing and footwear, exports to non-EU countries, and goods sent to VAT-registered persons in another EU member state.

Meanwhile, business activities conducted in public interest – such as postal services, public transportation, education, medical services, financial and insurance services, etc – are VAT-exempt.

Customs duty

Goods imported into Ireland from outside the European Union are subject to customs duty at rates ranging from 0% to 14% for industrial goods and higher rates for agricultural goods.

Excise duty

This is applicable to alcohol and tobacco products as well as mineral oils such as petrol and diesel. Reduced duty rates may apply for companies setting up microbreweries in Ireland. Some relief is available, such as on alcohol used or intended for use in the preparation of foodstuffs, certain beverages, vinegar, medicinal products, and other such products.

Stamp duty

Written documents related to the transfer of property or shares attract a stamp duty. Duty rates range from 1% to 15%.

Zoned land tax

Land that is zoned as residential or mix-use invites a zoned land tax at the rate of 3% of the market value of the land.

Carbon tax

Apart from excise duty, mineral oils supplied in Ireland attract a carbon tax roughly at the rate of EUR 63.50 per tonne of CO2 emitted.

Tax compliance and registration

• Registration: To start paying corporate income tax in Ireland, companies must first register themselves with the Office of the Revenue Commissioners through the Revenue Online Service and obtain a tax registration number.
  
• Tax rates: Irish corporate income tax has multiple rates – a 12.5% standard rate, 25% higher rate, 33% capital gains tax, and 15% Global Minimum Top-up Tax. Knowing which rate to apply to one's taxable profit is central to fulfilling one's tax-related legal obligations.
  
• Corporation tax return and payments: Corporate taxpayers in Ireland must make a preliminary computation of corporation tax, fill in their CTI corporation tax return form, and file tax returns and pay taxes by their due dates. Small and large companies ought to remember that the rules and deadlines for paying corporation tax are different. Also, e-filing of tax returns is mandatory.
  
• Fines and penalties: Late filing and payment delays lead to fines and penalties. Companies that are behind on paying corporate taxes or haven't paid in full will be charged interest at a daily rate of 0.0219%. Similarly, filing one's corporation tax return post-deadline incurs a surcharge of 5% to 10% of the tax due.
  

How Aspire can help your expansion into Ireland

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• A multi-currency business account that allows you to transact easily in 30+ major currencies across 130 countries
  
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FAQs

Why is Ireland’s corporation tax so low?

Ireland's decision to tax corporate income at a competitive rate of 12.5% is designed to attract FDI, promote industrial growth, and combat employment.

Is Ireland a tax haven for corporations?

Rather than a typical tax haven, Ireland is seen as a low-tax jurisdiction that enables tax avoidance through a low headline corporate income tax rate of 12.5% and an extensive network of tax treaties. Furthermore, it is considered a major profit shifting destination.

Who pays 15% corporation tax in Ireland?

Multinational enterprises with annual consolidated group revenues of more than EUR 750 million are subject to a 15% Global Minimum Tax instead of the lower Irish corporation tax.

Which country has the lowest corporate tax rate?

Turkmenistan has the lowest corporate income tax rate at 8% while countries like the Bahamas offer 0% corporate tax on certain companies.

Is Ireland a high-tax country?

No. Ireland is widely considered a low-tax country.

What is passive income in Ireland?

In Ireland, passive income is non-trading income and includes income from sources such as dividends, interest, royalties, and rent. The passive income of companies is taxed at a higher rate of 25%.