You have the skills and the customers are out there. Then you hit the admin. Revenue, the CRO, VAT thresholds, PRSI classes. It all sounds heavier than it actually is.
Here is the honest version: becoming a sole trader in Ireland is the simplest and cheapest way to set up a business. There is no company to incorporate and no annual accounts to file publicly. You register with Revenue for income tax, register a business name if you are not trading under your own name, open a business bank account, and keep an eye on the VAT thresholds. This guide walks through each step in order, with links to the official sources so you can check everything yourself.
What does sole trader actually mean in Ireland?
A sole trader is an individual who runs a business in their own right. You and the business are legally the same person. You keep all the profits after tax, and you are personally responsible for any debts the business runs up. There is no limited liability shield.
It suits freelancers, tradespeople, consultants, online sellers and anyone testing a side hustle alongside a job. Most Irish businesses start this way because the setup is fast and the running costs are low. Limited companies pay corporation tax and come with directors’ duties and CRO filings; sole traders pay income tax under self-assessment and file one return a year. If you expect serious profits or want liability protection, read our comparison of whether a sole trader or company is the better structure before you commit. For most people starting a business in Ireland, sole trader first is the sensible call. You can always incorporate later.
What do you need before you register as a sole trader?
Gather a few things before you go near any forms. It makes the online registration a ten-minute job rather than a frustrating evening.
- Your PPSN, home address and contact details.
- The date you commenced trading, or the date you plan to. Revenue will ask for it.
- A short description of your main business activity, for example “electrical contracting” or “graphic design”.
- Your trading name. Your own name needs no registration; anything else must be registered with the CRO (more on that below).
- Access to Revenue’s myAccount or ROS, the two systems you will use to manage tax online.
One common point of confusion: there is no such thing as a “sole trader licence” in Ireland. Becoming self-employed is a tax event, not a licensing one. The registration that matters happens with the Revenue Commissioners.
How do you register for income tax with Revenue?
This is the core step. To become a sole trader, you register with Revenue as a self-employed person for income tax. According to Citizens Information, you must register for self-assessment once your net self-employed income goes above 5,000 euro a year. Below that, you can usually declare the income through PAYE channels instead.
Revenue explains the process on its page covering how to register for tax as a sole trader. In short:
- Sign in to myAccount and use the eRegistration service, or register through the Revenue Online Service (ROS).
- Add an income tax registration as a sole trader, confirming your start date and business activity.
- If you cannot use the online services, complete the paper Form TR1 instead.
Tax registration is free. Once it is processed, your PPSN doubles as your tax reference number and you are set up to file returns, make payments and read Revenue correspondence online. Keep your ROS digital certificate safe; you will need it every October.
What taxes will you pay once registered?
Sole traders pay tax under the self-assessment system. Three charges apply to your profits, and it pays to understand each one rather than discovering them in your first annual tax return.
|
Charge |
What it is |
Current position |
|
Income tax |
Tax on your business profits |
20% standard rate, 40% higher rate, depending on your income band |
|
PRSI (Class S) |
Social insurance for the self-employed |
4.2% of income since 1 October 2025, per the official PRSI guidance |
|
USC |
Universal Social Charge on gross income |
Progressive rates; see the USC guide |
You can also claim the Earned Income Tax Credit, the self-employed equivalent of the PAYE credit, which directly reduces the tax due. Set aside a percentage of every invoice from day one. We cover the bands and figures in detail in our guide to how much a sole trader can earn before paying tax.
When must you register a business name with the CRO?
Trading as “Mary Byrne”? No registration needed. Trading as “Byrne Design Studio”? You must register that name. The rule is simple: if the business operates under anything other than your own personal name, you need to register your business name with the Companies Registration Office (CRO) within one month of adopting it.
You register a business name by filing Form RBN1, which is done online through the CRO’s CORE portal. You will need the business name, your business address and your own details, and there is a small filing fee (the online route is cheaper than paper). Once approved, you get a Certificate of Business Name. Banks usually ask for it before opening an account in the trading name, so keep a copy handy.
Worth saying: registering a name with the CRO gives no trademark protection. It is a disclosure requirement, nothing more. Check the name is free as a domain and on social channels before you file.
Do you need a business bank account as a sole trader?
Legally, no. Practically, yes. Mixing business and personal transactions in one current account is the single biggest cause of messy books we see.
A separate business bank account gives you clean records for your tax return, makes expense claims defensible if Revenue ever asks questions, and lets you see at a glance whether the business is actually making money. Banks will typically want photo ID, proof of address and your Certificate of Business Name if you trade under a registered name. Set up a second savings account as a tax pot too, and move 25 to 30 per cent of each invoice into it on payment. Future you will be grateful every October.
When do you need to register for VAT?
Not on day one, for most people. VAT registration becomes obligatory only when your turnover passes the thresholds set out by Revenue: since 1 January 2025 these are 42,500 euro for services and 85,000 euro for goods in any continuous 12-month period.
Watch your rolling turnover, not just the calendar year. If you register late, Revenue can backdate the liability, which means paying VAT out of income you never charged it on. Painful and avoidable. Some traders register voluntarily before the threshold to reclaim VAT on costs, but that only makes sense in specific situations. Our VAT thresholds guide works through when registration helps and when it just adds paperwork.
What records and deadlines keep you compliant?
Keep every sales invoice, purchase receipt and bank statement, plus mileage logs if you travel for work. Revenue requires records to be kept for six years. A spreadsheet works at the very start; accounting software earns its keep once invoices pick up, and our bookkeeping services can take the whole job off your desk.
The deadlines that matter, all confirmed on the Revenue website:
- File an annual tax return (Form 11) by 31 October each year, usually extended to mid-November if you file and pay through ROS.
- Pay preliminary tax for the current tax year at the same time. Yes, you pay tax due for this year before it ends; preliminary tax catches almost every new sole trader off guard.
- File VAT returns on your assigned cycle, if registered.
Build a monthly money routine: update the books, reconcile the bank, top up the tax pot. Twenty minutes a month beats a panicked weekend in October. If your trade needs insurance, public liability or professional indemnity for example, sort it before the first job. Your Local Enterprise Office runs cheap start-your-own-business courses and mentoring that cover this groundwork well.
FAQs about becoming a sole trader in Ireland
How much does it cost to register as a sole trader in Ireland?
Very little. Registering for income tax with Revenue is free. The only mandatory cost arises if you need to register a business name with the CRO, where Form RBN1 carries a modest filing fee.
Can I be a sole trader and keep my full-time job?
Yes. Plenty of self-employed people start as a side hustle alongside PAYE employment. You still need to register for self-assessment once your net self-employed income passes 5,000 euro, and you declare both income sources on your Form 11.
What is the difference between registering with Revenue and registering a business name?
They are separate jobs with separate bodies. Revenue registration sets you up to pay tax as a self-employed person. Business name registration with the CRO simply records the trading name you use. Many sole traders need both; everyone needs the Revenue one.
Can I switch from sole trader to a limited company later?
Yes, and many do once profits grow or limited liability starts to matter. You incorporate the company, transfer the trade, and cancel your sole trader tax registration. Get advice on timing the changeover.
What if I cannot register online?
If you cannot access myAccount or ROS, submit the paper Form TR1 to Revenue, or ask an accountant to handle the online registration as your agent.
Ready to set up as a sole trader?
The order of work is short: register with Revenue for income tax through ROS or myAccount, file the RBN1 if your trading name needs it, open a business bank account, then monitor turnover so you register for VAT on time. None of it is hard once the sequence is clear.
If you would rather have it done right first time, with the bookkeeping system, tax registrations and VAT planning sorted in one go, that is exactly what we do. Book a consultation and get in touch today.
Disclaimer: This guide is for general information purposes only and does not constitute professional advice. Speak to a qualified accountant about your specific circumstances before acting on anything covered here.