5 Tips For Filing Corporate Tax in Ireland: Procedure & Filing Returns

The following article will describe the various tips for filing corporate tax in Ireland. The low rate of corporate tax rates of 12.5% & 25% have significantly influenced businesses to focus on their efforts in the Irish Market.

Table of Contents

Filing Corporate Tax in Ireland

Ireland has become a popular destination for numerous business organizations to establish their business branches, or franchises because of recent changes in the Irish business environment. Most businesses take the benefits of taxation regulations in Ireland.

filing corporate tax in ireland

Although the Irish government has strict rules on financial auditing and reporting, however, it’s evident that tax imposed tends to be a welcome relief for many companies. The low rate of corporate tax rates of 12.5% & 25% have significantly influenced businesses to focus on their efforts in the Irish Market.

A business-friendly country, Ireland has become a home base for a variety of consulting firms to begin an uprising to get an initial step in their business cycle. In this article we will be offering you some tips for filing corporate tax in Ireland, let’s see what are they.


Procedure for Filing Corporate Tax in Ireland

Companies that conduct business in Ireland through a branch or agency, whether they are Irish residents or not, must pay Corporation Tax (CT) on their taxable earnings. However, there are various situations in which they might not be required.

Under Mandatory e-Filing, a business is required to submit its return and pay any taxes owed through Revenue Online Service (ROS).

A business must:

  • Compute and submit the preliminary tax by the scheduled time.
  • Finish and submit the CT1 Form and the 46G Form (Organization) before the return filing date.
  • Settle any outstanding taxes before the return filing deadline.

Due Date for Filing Corporate Tax in Ireland

A business has nine months from the conclusion of the accounting period to submit its return and make any required tax payments. The amount due shall be made by the organization on or before the 23rd day of the ninth month. Corporations that fail to make payments and file digitally are obligated to file their returns and pay any applicable taxes. These businesses are required to make payments for this tax by the 21st of the month, at the latest.

Consequences of late filing of corporate tax

On contributions that remain outstanding beyond the due date or that fail to be paid in full, interest is charged at a daily rate of 0.0219%. 

The interest is determined by multiplying the:

  • Amount of unpaid taxes a corporation has
  • Days that the tax is past due
  • Interest rate

The Tax Appeals Commission will not hear an appeal over an interest penalty. After interest is added, you are required to pay the entire balance due and it can’t be lowered.

The following fees will also be added if the company submits the return after the deadline:

  • 5% of the tax owing up to an amount not exceeding €12,695 if submitted within two months of the filing date.
  • 10% of the tax owed, with a maximum value of €63,485 if submitted more than two months following the filing date.

Some reliefs claimed are going to be subject to limitations if the corporation submits the return after the due date. 

According to the duration of the filling delay, the limitations will be applied to claims for

  • Additional capital allowance
  • Loss relief
  • Group relief

Tips for filing corporate tax in Ireland

5 tips for filing corporate tax in ireland

Here is the list of various tips for filing corporate tax in Ireland that you must know while filing it.

Determine the various types of tax impositions

Taxes are assessed on the various types of earnings that a business or legal entity makes, therefore it is crucial to know what taxes are assessed on the different types of gains, such as:

  • Earnings from business activities in Ireland and Abroad
  • Profits from Investment Returns
  • Asset sale with an additional increase in value of the account has to be set up

Taxes are a possibility on the above-mentioned earnings or profits.


Register for Corporate Tax

The Revenue Commissioners Office in Ireland is the Alpha Administrative body blanketing the Irish Market with its regulations to ensure that all companies are transparent about their activities and adhere to the ethical business standards required for making profits.

This Revenue Commissioners Office maintains tax regulations in Ireland and, as such, tax agents or secretaries of a company for a business in Ireland must complete an online tax form to be eligible for payment of taxes. 

In addition, the Revenue Office will also demand the Companies Registration Office (CRO) number from the tax-paying entity which serves as an exclusive identification number to maintain information and records regarding the business. 

In addition to corporate tax, the Revenue Office also charges taxes for various business operations –

  • Certain taxes like VAT are imposed when a business reaches the threshold of a certain amount.
  • Similarly to that, various taxes are charged on various occasions, for instance, the Employer’s Pay as You Earn (Pay as you Earn) tax, which is levied on salaries that are paid by employers to employees.
  • The Relevant Contract Tax (RCT) is imposed on contractors when they sign up for different construction contracts.

Documentation is an extremely important aspect

Revenue Office Revenue Office in association with the Irish Auditing and Accounting Supervisory Authority (IAASA) has issued the obligation for firms to keep their accounts and other documents for a period of probation of six years. 

This will ensure that in the event of an investigation requiring accounting compliance or audit violations or tax escape, these documents could be used to assist authorities at the Revenue Office. The responsibility for capturing irregularities in the financial statements of firms lies with the tax officer or the internal auditing organization. 

The nominee directors or the secretary of the company are responsible for recording the discussion at annual general meetings on earnings and operations. In addition, they must document the ethical conduct that the directors’ board has.

Keep a regularity of the payment before the deadlines

In most cases corporations, taxes are imposed with the help of preliminary and final payments. Companies are required to pay taxes as a result of mandatory e-filing through ROS. 

Revenue Online Service (ROS) and this procedure follows specific rules that businesses must follow like:

  • Calculating the initial tax
  • The payment must be made before the due date is nine months following the closing in the period of accounting
  • The online form can be filled out to apply to pay taxes due
  • Taxes are due to be paid before the filing date for the return
  • If there is a delay in tax payments, the company is liable for additional charges or fees relating to the delay in tax payments.

The timely filing of tax returns

To stay clear of any excess payments or to avoid being charged for late filing tax returns, the tax officials of the company have to make sure that the business has filed its tax return promptly. 

A disciplinary review of tax return submission will enable businesses to keep a certain budget for tax payments instead of experiencing unintentional fluctuation like the under or overpayment of tax which can lead to the company being involved in legal trouble.

Being a successful business owner does not just mean focusing on the market and other core business operations. It is essential to also maintain an effective corporate governance system by ensuring compliance with the laws of the administrative authorities within the geographic boundaries within which the business is located. 

For Ireland, the main institutions that allow businesses to operate in Ireland include the Companies Registrations Office (CRO), the Irish Auditing and Accounting Supervisory Authority (IAASA), and the Revenue Commissioners Office of Ireland. 

These bodies are the gateways to the market, and they oversee all corporate administrations, which dominate this Irish Economy.


Companies doing business in Ireland have a big responsibility and they have to file corporate taxes. Understanding pertinent tax regulations, meeting filing requirements, and accurately reporting financial data are vital.

If you’re an ambitious business professional interested in starting a business in Ireland and would like to know more about the Irish Market, contact Odint Consultancy today to learn details about the Irish Market and let us help you to start an enterprise.

Even though the Odint Constancy professional experts will help you in filing corporate tax in Ireland, Just get in touch to know more.


Making a year-end pension payment also known as AVC (Additional Voluntary Contribution) has been for a long time an effective strategy to help Irish companies to cut down on their corporation Tax liability.

Corporation Tax is applied to all businesses operating in Ireland however the rate you pay will depend on specific variables.

Limited companies are taxed at an Irish Corporation Tax (CT) rate of 12.5 percent of their profits.

  • Claim R&D Tax Relief.
  • Claim Patent Box Tax Relief.
  • Be sure to meet all deadlines.
  • Put money into plant and machinery (P&M)
  • Capital allowances for the
  • All business expenses must be claimed.
  • Utilize the personal allowance of directors effectively.

No, Ireland’s corporation tax returns must be filed electronically using the Revenue Online Service (ROS).

Yes, there could be fines, interest charges, and even possible legal repercussions for late filing or non-compliance. It’s crucial to meet all of your tax obligations and stick to the reporting timelines.