Who Should Read This?
This guide is for anyone living or working in Ireland who wants to understand their tax obligations and options better. Whether you are a PAYE worker with rental income, a sole trader, a company director, a landlord, an expat, or an SME owner, this guide will help you make more informed decisions about your taxes.
In this guide, you’ll find:
- What a tax consultant in Dublin does and who needs one
- The main Irish taxes explained income tax, corporation tax, CGT, CAT, VAT, and more
- Key tax deadlines in Ireland with the consequences of missing them
- How to reduce your Irish tax bill legally with proper planning
- How Revenue audits work and what to do if you receive one
- What to look for when choosing a tax advisor in Dublin
- Answers to the most frequently asked questions about Irish tax
Key Takeaways
- Ireland has multiple separate taxes income tax, corporation tax, CGT, CAT, VAT, and stamp duty among them each with its own rules, rates, and filing deadlines
- Self-assessed taxpayers who file late face surcharges of 5% to 10% of their tax liability entirely avoidable with proper planning
- Many Irish individuals and businesses are overpaying tax because they are not claiming all available reliefs, credits, and deductions
- A Revenue audit does not have to be a disaster professional representation from the start of the audit process consistently produces better outcomes
- The best tax advice is given before decisions are made, not when the return is due involving a tax consultant earlier in the year consistently saves more money
- Ireland’s 12.5% corporation tax rate is one of the lowest in the EU, but getting the most from it requires proper structuring and planning
A Complete Guide to Tax Advice in Ireland
If you live or run a business in Ireland, tax is a constant. The rates, the reliefs, the filing deadlines, the Revenue correspondence it does not stop. And for many people, managing Irish tax obligations properly without overpaying and without falling foul of Revenue is one of the more stressful parts of running their financial life.
A good tax consultant in Dublin changes that. This guide explains everything you need to know: what Irish tax consultants do, who genuinely benefits from working with one, how the main Irish taxes work, what the key deadlines are, how to reduce your tax bill legally, and what happens when Revenue comes calling.
What Does a Tax Consultant in Dublin Do?
A tax consultant also called a tax advisor or tax adviser is a professional who specialises in Irish taxation. Their work covers three broad areas.
Tax compliance is the baseline. This means preparing and filing accurate tax returns with Revenue on time Form 11 for self-assessed individuals, CT1 for companies, VAT returns, CGT returns, CAT returns, employer PAYE returns, and so on. Most people who think of a tax consultant think of this function first.
Tax planning and advisory goes further. A tax consultant who only files returns is not using their expertise fully. The real value comes from advising clients on decisions that affect their tax position how to structure a business, whether to incorporate, when to dispose of an asset, how to use pension contributions to reduce income tax, whether an acquisition should be a share purchase or an asset purchase. These are advisory functions that save clients real money when done well.
Revenue representation covers dealings with Revenue Commissioners responding to audit notifications, compliance interventions, aspect queries, and investigations. Having a qualified tax consultant represent you in these situations is one of the most important services available.
The Main Irish Taxes Explained
Ireland has a number of separate taxes, each with its own rules. Here is a clear overview of the most important ones.
Income Tax (PAYE and Self-Assessment)
Income tax is charged on income earned by individuals in Ireland. The standard rate is 20%, and the higher rate is 40%. In addition to income tax, most earners also pay PRSI (Pay Related Social Insurance) at 4% and USC (Universal Social Charge) at rates between 0.5% and 8% depending on income level, giving a combined marginal rate of 52% for higher earners.
PAYE workers have tax deducted at source by their employer. However, if you have income outside of PAYE rental income, self-employment income, dividends, foreign income, income from share options you must file a self-assessed tax return (Form 11) with Revenue. The deadline is 31 October each year, with an extension for ROS filers to mid-November.
Most self-assessed taxpayers are also required to pay Preliminary Tax an advance payment of their expected tax liability for the current year by 31 October. Getting Preliminary Tax wrong in either direction has consequences: underpay and Revenue charges interest at 8% per annum; overpay and you tie up cash unnecessarily.
Corporation Tax
Irish-resident companies pay corporation tax at 12.5% on trading income one of the lowest rates in the EU and a cornerstone of Ireland’s international business attractiveness. Non-trading income (rental income, investment income) is taxed at 25%. The corporation tax return (CT1) is due nine months after the end of the company’s financial year.
Effective use of Ireland’s corporation tax regime requires proper structuring from the start. Capital allowances, R&D tax credits, group relief, loss relief, and IP-related exemptions can all reduce a company’s effective tax rate significantly below 12.5% in certain circumstances. This requires planning it does not happen automatically.
Capital Gains Tax (CGT)
CGT applies when you dispose of an asset at a gain. The standard rate in Ireland is 33% on the net chargeable gain, after deducting the acquisition cost, enhancement expenditure, and the annual CGT exemption of €1,270.
Common CGT events include the sale of investment property, the disposal of shares (including shares in private companies), the sale of a business, and the transfer of certain assets by way of gift. There are important reliefs available including retirement relief (for business owners aged 55 or over disposing of qualifying business assets), entrepreneur relief (reducing the CGT rate to 10% on gains up to €1 million from qualifying business disposals), and principal private residence relief (for gains on the sale of your main home).
CGT returns are filed and paid in two periods: gains between 1 January and 30 November are due on 15 December; gains in December are due by 31 January of the following year.
Capital Acquisitions Tax (CAT) Inheritance Tax and Gift Tax
CAT is charged on gifts and inheritances above certain tax-free thresholds. The rate is 33% on the taxable value above the relevant threshold.
There are three group thresholds based on the relationship between the donor and the recipient. The Group A threshold (approximately €400,000 updated in the 2025 Budget) applies to gifts and inheritances from a parent to a child. The Group B threshold (approximately €40,000) applies to gifts from a grandparent, sibling, aunt, or uncle. The Group C threshold (approximately €20,000) applies to all other relationships.
Planning ahead is essential for minimising CAT exposure. The annual small gift exemption of €3,000 per donor per recipient per year is one of the most straightforward and underused tools available. Properly structured farm and business reliefs can also dramatically reduce the CAT payable on qualifying assets.
VAT Value Added Tax
VAT is charged on most goods and services in Ireland. The standard rate is 23%, with reduced rates of 13.5%, 9%, and 0% applying to certain categories. Businesses with annual turnover above €40,000 (services) or €80,000 (goods) must register for VAT. Registration below these thresholds is optional in most cases.
VAT returns are typically filed bi-monthly via ROS, with the return for each two-month period due by the 19th of the following month. Annual or four-monthly return options are available to qualifying businesses.
VAT on property transactions is a specialist area in its own right, involving the Capital Goods Scheme, the distinction between first and subsequent supply of property, and the application of VAT on commercial leases. Getting this wrong can have very significant consequences professional advice before a transaction is essential.
Stamp Duty
Stamp duty is charged on the transfer of property and certain other assets. Residential property attracts stamp duty at 1% on the first €1 million and 2% above that. Commercial property and agricultural land attracts stamp duty at 7.5%. The transfer of shares in an Irish company typically attracts stamp duty at 1%.
There are important reliefs available consanguinity relief for farm transfers between close relatives, young trained farmer relief, and others that can significantly reduce stamp duty on qualifying transactions.
PAYE, PRSI, and USC Employer Tax
Employers in Ireland are required to operate the PAYE system in real time under Revenue’s PAYE Modernisation rules, submitting Employer Record Returns (ERRs) for every payroll run. Mistakes in PAYE whether in the deduction of income tax, the treatment of Benefits-in-Kind, or the classification of workers as employees versus contractors are a frequent source of Revenue compliance interventions.
Key Irish Tax Deadlines
Missing a tax deadline with Revenue is always costly. Here are the key dates for 2026.
- 31 October 2026: Income tax return (Form 11) for the 2025 tax year, Preliminary Tax payment for 2026, CGT return for January to November 2025 disposals, and CAT return (IT38) for gifts and inheritances received in 2025. ROS filers receive an extension to mid-November.
- 31 January 2026: CGT payment for December 2025 disposals.
- 9 months after financial year-end: Corporation Tax return (CT1) and final CT payment.
- 31 days before financial year-end: Preliminary Tax for companies using the prior year basis.
- 19th of each month: VAT return for the previous bi-monthly period.
- Monthly: Employer PAYE/PRSI/USC returns under PAYE Modernisation.
- 15 December 2026: CGT payment on gains made between 1 January and 30 November 2026.
Late returns and late payments attract interest charges from Revenue at 8% per annum on unpaid tax, plus surcharges of 5% to 10% on income tax returns filed late. These are avoidable costs with proper planning and a tax consultant who tracks your deadlines.
How to Reduce Your Irish Tax Bill Legally
Tax planning is entirely legal and entirely different from tax evasion. Here are the most effective and commonly used methods for reducing Irish tax liabilities.
Maximise pension contributions: Pension contributions attract full income tax relief at your marginal rate. A higher rate taxpayer contributing €10,000 to a pension effectively pays only €6,000 net after tax relief. Revenue sets limits based on age ranging from 15% of net relevant earnings for those under 30, up to 40% for those aged 60 and over. Director pension contributions from a company are also a fully deductible business expense. Pension planning is one of the single most tax-efficient tools available to Irish individuals.
Claim all allowable expenses: Sole traders and self-employed individuals can deduct all expenses incurred wholly and exclusively for the purpose of their business. Common items that are overlooked include motor expenses (using the actual cost method or the simplified expenses basis), use of home as office, professional subscriptions, training and development costs, and accountancy fees. For employees, the list of allowable deductions is more limited but still worth reviewing.
Use capital allowances: Capital expenditure on plant, machinery, and equipment does not go through the profit and loss account directly it is depreciated. For Irish tax purposes, capital allowances are claimed at 12.5% per annum over eight years for most assets. The full cost of energy-efficient equipment may qualify for an accelerated write-off in year one. Buying qualifying assets before your financial year-end rather than after can bring forward tax relief.
Structure director remuneration tax-efficiently: For owner-managed companies, the most tax-efficient split between director salary and dividends is not obvious and changes as income levels change. A salary of €40,000 and a dividend of €30,000 has very different tax consequences than a salary of €70,000 and no dividend. Modelling this annually with a tax consultant saves significant sums over time.
Utilise CGT reliefs before a disposal: If you are planning to sell a business, investment property, or significant shareholding, the timing and structure of the disposal can dramatically affect the CGT payable. Entrepreneur relief, retirement relief, and the annual exemption all need to be considered before completion not at the time you are filing.
Write off bad debts. Genuinely irrecoverable debts can be written off, reducing taxable income. This is straightforward in principle but requires the debt to be demonstrably uncollectable.
R&D Tax Credits: Companies carrying out qualifying research and development activities can claim a 30% tax credit on eligible expenditure. The credit is refundable over three years even where no corporation tax liability exists, making it valuable for early-stage companies. Many Irish SMEs miss this because they do not recognise their activities as qualifying R&D software development, product testing, process improvement, and certain data analytics work can all qualify.
Use the Annual Small Gift Exemption for CAT planning: Every individual can give up to €3,000 per year to any number of recipients without CAT consequences. Over time, consistent use of this exemption can substantially reduce the taxable value of a future inheritance.
GET IN TOUCH
Bringing It All Together
Revenue Audits in Ireland What to Expect and How to Prepare
Receiving a Revenue audit notification is alarming for most individuals and businesses. Understanding what an audit involves and how to respond makes a significant difference to the outcome.
Revenue conducts two main types of compliance interventions. A Revenue audit is a formal examination of your tax returns and underlying records for one or more tax years. An aspect query or profile interview is a less formal but still significant intervention focused on a specific area of your tax affairs.
Revenue selects cases for audit on the basis of risk profiling certain industries, certain financial ratios, unusual changes in income or deductions, late returns, and random selection all feed into Revenue’s targeting. The most common audit triggers include significant discrepancies between income declared and lifestyle visible from third-party data, VAT reclaims that appear disproportionate to the scale of the business, claims for expenses that Revenue considers excessive or poorly documented, and inconsistencies between returns filed in different years.
When an audit notification arrives, the clock starts ticking. Under Ireland’s voluntary disclosure regime, making an unprompted voluntary disclosure of any irregularities before the audit begins can significantly reduce the penalties applicable. Once Revenue formally opens the audit, this opportunity closes.
A qualified tax consultant can review your returns and records before the audit begins, identify any issues, prepare a voluntary disclosure if appropriate, and then represent you throughout the Revenue inquiry. Having professional representation from day one is consistently associated with better outcomes lower penalties, more accurate assessments, and faster resolution.
If Revenue finds that you deliberately understated income or overclaimed reliefs, the penalties can be very severe up to 100% of the tax underpaid, with publication in Revenue’s List of Tax Defaulters in serious cases. For innocent errors or careless mistakes, penalties are lower and can be further reduced by cooperation and voluntary disclosure.
Choosing the Right Tax Consultant in Dublin
Not all tax advisors in Dublin are the same. Here is what to look for when selecting one.
Qualifications: In Ireland, tax consultants are typically Chartered Accountants (ACA or FCA, members of Chartered Accountants Ireland), Chartered Tax Advisers (CTA, members of the Irish Tax Institute), or Certified Public Accountants (CPA, members of CPA Ireland). Checking that your advisor holds a relevant professional qualification and is a member of a recognised body gives you assurance as to their competence and the ethical standards they are bound by.
Experience relevant to your situation: A tax consultant who primarily works with large corporates may not be the right fit for a sole trader or a landlord with three properties. Look for an advisor who has genuine experience in your specific situation whether that is personal tax, rental income, director’s tax, expat tax, or corporate restructuring.
Proactive communication: The best tax advisors do not wait for you to come to them with problems. They flag upcoming deadlines, share relevant budget changes, and review your position throughout the year not just in October.
Transparency about fees: You should know what you are paying before the work starts. Fixed-fee engagements for standard returns are common and make it easy to budget. Hourly billing for complex advisory work is reasonable, but the hourly rate and estimated time should be confirmed upfront.
ROS access and digital capability: Revenue operates almost entirely through ROS (Revenue Online Service). Your tax advisor must be fully ROS-registered and capable of filing electronically for all relevant taxes.
Responsiveness: Tax questions often arise at inconvenient times before signing a contract, during a property purchase, or when a Revenue letter arrives. An advisor who responds quickly and clearly is worth a great deal.
Tax Mistakes Irish Individuals and Businesses Make
Not registering for self-assessment when required: If you have income outside of PAYE, you are legally required to register for self-assessment and file a Form 11. Many people do not do this until Revenue finds them at which point surcharges and interest have accumulated.
Missing the Preliminary Tax payment: Preliminary Tax is not optional. Underpaying it means Revenue will charge interest at 8% per annum on the shortfall from the payment date. Many first-time self-assessed taxpayers are caught out by this.
Confusing business and personal expenses: Only expenses incurred wholly and exclusively for the purpose of the business are deductible. Personal expenses even partially that are run through a business are a common audit trigger and can result in disallowed deductions and penalties.
Not keeping records: Revenue can go back up to four years from a filing date on a standard inquiry, and further back where fraud or neglect is suspected. All records supporting a tax return must be retained. In practice, this means six years of complete financial records invoices, bank statements, payroll records, VAT documentation, and receipts for claimed expenses.
Ignoring CGT on the disposal of shares: Many PAYE workers who participate in share schemes RSUs, share options, employee share purchase plans do not realise that disposing of those shares creates a taxable CGT event. Revenue receives information from employers and can cross-reference with filed returns. Failing to declare a share disposal is one of the most common compliance errors among higher-earning employees.
Not using pension contributions for tax relief: The tax relief available on pension contributions is extremely generous up to 40% for higher rate taxpayers and yet many people contribute far below their allowable limit. This is one of the most straightforward and valuable areas of tax planning available.
Mishandling rental income: Rental income is taxable, and the rules around what can be deducted change regularly. Under current rules, 100% of qualifying mortgage interest can be deducted on residential rental properties but the deduction is conditional on the tenancy being registered with the Residential Tenancies Board (RTB). Landlords who fail to register or who claim incorrect deductions are a priority for Revenue compliance activity.
Start Your Business Journey Now
Hundreds of startups already growing with TAS Consulting
Tax Advice for Specific Situations
Starting a business in Dublin: The most important tax decision when starting a business is whether to trade as a sole trader or incorporate as a limited company. This affects the rate of tax you pay, your personal liability, the availability of certain reliefs, and your administrative obligations. The answer is not the same for everyone it depends on your income level, your plans for growth, your appetite for corporate governance, and whether you intend to sell the business at some point.
Buying property in Dublin. Property purchases in Ireland involve stamp duty, possible CGT on a future disposal, and for investment properties rental income tax. If the property is commercial, VAT may also be relevant. Getting advice before you sign rather than after almost always saves money.
Selling a business: A business sale is one of the most significant tax events in a person’s financial life. The difference between selling shares and selling assets has major CGT implications. Entrepreneur relief, retirement relief, and the availability of holdover relief all need to be considered well before heads of terms are signed.
Expats and non-residents: Ireland’s domicile and residence rules determine your Irish tax obligations. An individual who is tax resident in Ireland is generally liable to Irish tax on their worldwide income. Non-residents with Irish-source income rental income, employment income from Irish work, income from an Irish company have specific Irish tax obligations regardless of where they live. The interaction between Irish tax law and tax treaties with other countries adds further complexity.
Ready to Make a Change? Talk to TAS Consulting Today.
Whether you are appointing a new director, processing a resignation, updating secretary details, or navigating a more complex removal, TAS Consulting manages the full process quickly, correctly, and with full CRO compliance.
Frequently Asked Questions
Do I need a tax consultant if I only have PAYE income?
Most PAYE workers will not need a tax consultant for their day-to-day affairs, as Revenue collects tax at source. However, if you have additional income rental properties, investments, foreign income, share schemes you almost certainly do. Additionally, many PAYE workers are entitled to tax refunds through credits and reliefs they have not claimed. A one-time review of your tax position can often identify money owed to you.
What is the difference between a tax consultant and a tax adviser in Ireland?
In practice, there is no meaningful legal distinction. Both terms describe a professional who provides tax planning and compliance services. The professional qualifications to look for are CTA (Chartered Tax Adviser) from the Irish Tax Institute, ACA/FCA from Chartered Accountants Ireland, or CPA from CPA Ireland.
How do I know if I am paying the right amount of tax?
The most reliable way is to have a qualified tax consultant review your position. They will confirm that all your income is correctly declared, that you are claiming all available credits and reliefs, and that your filing status and tax band are applied correctly. Many people who undertake this review discover either that they have overpaid or that there are legitimate planning opportunities they have not used.
Can I claim home office expenses as a sole trader?
Yes. If you use a part of your home exclusively and regularly for your business, you can claim a proportion of home running costs mortgage interest or rent, utilities, broadband, insurance as a business expense. The proportion is calculated based on the floor area used for business relative to the total floor area of the property. Exclusively personal rooms cannot be included.
What happens if I have not filed tax returns for several years?
Revenue has the power to raise assessments for unfiled years and charge interest and penalties on any outstanding tax. The best approach is to engage proactively file the outstanding returns, pay any tax owed, and cooperate fully with Revenue. Self-disclosure before Revenue opens a formal inquiry significantly reduces the penalties applicable. A tax consultant can manage this process and negotiate the best outcome.
