How Do I Get a VAT Number in Ireland? (Step-by-Step Guide to VAT Registration)

You’ve started a business. Revenue is growing. And now someone’s asking for your VAT number. Maybe it’s a B2B client, maybe it’s a public body looking at your tender, or maybe you’ve just realised you’re approaching the threshold and need to get registered before you land yourself in trouble. Whatever the trigger, the VAT registration process in Ireland is more straightforward than most people expect. But there are a few traps worth knowing about.

Here’s how to get a VAT number in Ireland, what you’ll need, and how to avoid the most common delays.

What Is a VAT Number in Ireland and What Does It Look Like?

A VAT number is a unique identifier issued by the Irish Revenue Commissioners that allows you to charge value-added tax on goods and services, reclaim VAT on business purchases, and trade with other EU businesses using the reverse charge mechanism. It’s also required on all VAT invoices you issue.

Irish VAT numbers follow the format IE followed by 7 digits and 1 or 2 letters (e.g., IE1234567A). This is distinct from several other identifiers you might already have:

Identifier	Issued By	Purpose
VAT Number	Revenue	Charging/reclaiming VAT, EU trade
Tax Reference Number	Companies Registration Office	Company registration and filings
PPSN	Dept. of Social Protection	Personal identification for individuals/sole traders
CRO Number	Companies Registration Office	Company registration and filings

No, you cannot use your PPS number as a VAT number. They serve entirely different purposes.

Who Needs a VAT Number in Ireland?

Any business making taxable supplies in Ireland that exceeds (or is likely to exceed) the VAT registration thresholds must register. This applies whether you’re a sole trader, limited company, or partnership.

• Sole traders and freelancers supplying taxable goods or services above the relevant threshold.
• Limited companies making taxable supplies, regardless of size.
• Partnerships operating as a single taxable entity.
• Non-established businesses supplying goods or services in Ireland (even without a physical presence here).
• B2B situations where clients, public bodies, or tender processes require a valid VAT number.

Some edge cases catch people off guard. Contractors providing a mix of taxable and exempt services, freelancers who assumed they were too small, e-commerce sellers hitting EU distance selling rules. If you’re selling online across borders, that’s worth getting specialist advice on, because the rules shifted significantly with the EU’s One Stop Shop changes.

When Do You Have to Register for VAT in Ireland (and What Are the Thresholds)?

There are two routes: mandatory registration and voluntary registration. Mandatory applies when your turnover from taxable supplies exceeds or is likely to exceed the thresholds set by Revenue. As of 2025, these are:

Supply Type	Annual Threshold
Goods	€85,000
Services	€42,500

These figures refer to taxable turnover only, not total revenue. Exempt income doesn’t count. You should be monitoring your rolling turnover, not just waiting until year-end to check.

Voluntary registration can make sense if you’re below the threshold but want to reclaim VAT on setup costs, or if your customers are mostly VAT-registered businesses who can reclaim what you charge them. Think of it as a strategic choice rather than just a compliance obligation.

Register late? Revenue can backdate your registration and you’ll owe VAT on supplies you should have been charging for. Penalties and interest on top. Not ideal.

What Do You Need Before You Apply for a VAT Number?

Before you touch the online form, gather the following. Incomplete applications are the single biggest cause of delays:

• Your business legal structure (sole trader, company, partnership) and relevant registration numbers.
• Business address, trading address, and contact details.
• Start date or intended start date of trading.
• Clear description of your business activities and what you sell.
• Expected turnover and the split between B2B/B2C, domestic/EU/non-EU customers.

To reduce the chance of queries or rejection, also have ready:

• Bank account details for the business.
• Evidence of trading: contracts, invoices, a live website, or purchase receipts.
• Identity verification for the responsible person.

You’ll need ROS (Revenue Online Service) access set up before you begin. If you don’t have it yet, allow extra time; the digital certificate registration takes a few days.

How Do You Register for VAT in Ireland Online Through ROS?

Revenue’s preferred method for VAT registration is online via ROS. Here’s the process, step by step:

1. Create or activate your ROS account and log in with your digital certificate.
2. Navigate to the tax registration area within ROS.
3. Complete the appropriate registration form: TR1 for sole traders, individuals, and partnerships; TR2 for companies.
4. Upload any supporting documentation Revenue may need (contracts, invoices, ID).
5. Submit and keep your acknowledgement reference.

You’ll be prompted to select VAT options during the form. Don’t overthink this; just ensure you choose what matches your actual supply type. Common mistakes include vague activity descriptions (“consultancy” tells Revenue very little), inconsistent dates, wildly implausible turnover estimates, and missing evidence of actual or intended trading.

There is no charge to register for VAT in Ireland. It’s free.

Can You Submit a Paper VAT Registration Application Form Instead?

Paper applications using the TR1 or TR2 form are technically possible but rarely recommended. They take significantly longer to process, and Revenue may still request you go through ROS. If you must use paper, confirm the current accepted method directly with your local Revenue office .

When Will Your VAT Registration Take Effect and How Long Does It Take to Get a VAT Number?

The effective date of your VAT registration is set by Revenue, typically the date you became liable or, for voluntary registrations, the date they process your application. As for how long it takes:

1. Straightforward applications: Often processed within 2 to 4 weeks.
2. Applications requiring additional checks: Can take 4 to 8 weeks or longer.
3. New businesses with limited trading history: Expect queries; allow extra time.

You’ll receive confirmation and your VAT number through ROS. If you urgently need it, check your ROS messages regularly and respond to any Revenue queries immediately. Having your acknowledgement reference handy when contacting Revenue speeds things up considerably.

Why Might Revenue Reject or Query Your VAT Application (and How Can You Prevent It)?

Rejections and queries typically stem from a handful of recurring issues:

1. Insufficient evidence that you’re actually trading or about to trade.
2. Unclear or implausible turnover projections (claiming €500k in year one with no contracts to show).
3. Mismatch between your stated business model and the VAT registration request.
4. Outstanding compliance issues or missing prior tax registrations.

Prevention is simple: be specific, be honest, and provide documentation upfront. If your application is rejected, read Revenue’s response carefully, correct what’s needed, and resubmit. It’s not the end of the world; it just costs you time.

What Happens After You Get a VAT Number (What Are Your Next Steps)?

Registration is just the beginning. Once you have your VAT number, you need to start charging VAT correctly on taxable supplies and build compliance into your processes:

1. Update your invoices to display your VAT number, the applicable VAT rate, and VAT amount on each line.
2. Update your website, checkout process, and pricing to reflect VAT-inclusive or VAT-exclusive amounts clearly.
3. File VAT returns on time. Most Irish businesses file bi-monthly via ROS, with payment due by the 23rd of the month following the period end.
4. Keep proper records: separate VAT collected from VAT paid, reconcile regularly, and retain supporting documentation for all input VAT claims.

Using cloud accounting software like Xero makes this dramatically easier. Automatic bank feeds, VAT coding, and return preparation save hours every period.

What Are the Benefits of VAT Registration in Ireland?

1. Reclaim VAT on legitimate business purchases (input VAT recovery).
2. Improved credibility with B2B customers and suppliers who expect a VAT number.
3. Access to EU intra-community trading processes.

The downsides? More admin, more compliance, and a cash-flow impact if you’re collecting VAT well before the filing deadline. For businesses selling primarily to consumers below the threshold, voluntary registration isn’t always worth it.

What Are the VAT Rates in Ireland You Should Know Before Charging Customers?

Ireland operates several VAT rates. Applying the wrong one is a common and costly mistake:

Rate	Percentage	Applies To
Standard rate	23%	Most goods and services
Reduced rate	13.5%	Tourism, construction services, certain fuels
Second reduced rate	9%	Newspapers, certain sporting facilities
Livestock rate	4.8%	Livestock and greyhounds
Zero rate	0%	Exports, certain food, children’s clothing

Some supplies are VAT-exempt entirely. Always check the Revenue guidance on VAT rates for your specific sector before charging customers.

How Do You Re-Register for VAT in Ireland If You Were Previously Registered?

If you previously cancelled your VAT registration (perhaps you ceased trading or fell below the threshold) and now need to re-register, the process goes through ROS in much the same way as a first-time application.

1. Reference your previous VAT registration history where relevant.
2. Ensure all other tax registrations (income tax, corporation tax, PAYE) are up to date and consistent.
3. Provide current evidence of trading or intention to trade.

Revenue may cross-reference your previous compliance record, so make sure any outstanding returns or liabilities are resolved before you apply.

FAQs About Getting a VAT Number in Ireland

How Do I Check If a VAT Number Is Valid in Ireland?

Use the EU VIES (VAT Information Exchange System) to validate any EU VAT number. You’ll need the country prefix (IE for Ireland) and the number. VIES confirms whether the number is active but won’t show the registered address or business details.

Can I Get a VAT Number in Ireland If I’m Not Yet Trading?

Possibly. Revenue does accept “intention to trade” applications, but you’ll need supporting evidence: signed contracts, a live website, evidence of setup costs, or a business plan. The weaker the evidence, the more likely Revenue will query or defer your application.

Do I Need a VAT Number If I’m a Small Business or Sole Trader?

Only if your taxable turnover exceeds the thresholds (€85,000 for goods, €42,500 for services). Below that, voluntary registration is an option if it benefits your business, particularly if most of your customers are VAT-registered and can reclaim what you charge.

Can I Invoice Without a VAT Number While I’m Waiting?

You can issue non-VAT invoices while your application is pending. Do not charge VAT on invoices until you have a confirmed VAT number and effective date. Once registered, you may need to issue corrected invoices backdated to your effective registration date. Confirm the approach with your accountant based on your specific circumstances.

What Should I Do If My VAT Number Application Is Taking Too Long?

1. Verify your application was submitted successfully in ROS.
2. Check ROS messages for any queries from Revenue and respond immediately.
3. Ensure all requested documents were uploaded and are legible.
4. If it’s been more than 4 weeks with no response, contact Revenue’s registration unit with your reference number.

Ready to Register for VAT in Ireland (and Avoid Delays)?

Getting your VAT registration right the first time saves weeks of back-and-forth with Revenue. Whether you’re a sole trader filling out a TR1 or a limited company completing a TR2, we can help you navigate the process cleanly.

1. Get help choosing the right registration route (TR1 or TR2) for your business structure.
2. Have your VAT application reviewed before submission to catch errors that cause delays.
3. Book a consultation to confirm thresholds, your effective date, and ongoing VAT obligations.

We’ll give you a document checklist, walk you through the ROS submission, and support your post-registration setup so you’re filing returns and reclaiming VAT from day one. Get in touch today and let’s get you registered properly.