“I already have a VAT number, so I’m covered for customs, right?” It is one of the most common questions in cross-border trade and the answer is often no.

Both numbers identify your business, and they can look alike on paperwork. But an EORI number and a VAT number do very different jobs. This guide puts them side by side, so you know exactly what each one does and when you need both.

EORI vs VAT: The 30-Second Answer

Here is the short version:

• EORI number: identifies your business to customs when goods cross a border.
• VAT number: registers your business with the tax authority for value added tax.

One is about customs. The other is about tax. They are issued by different authorities, used on different documents and cannot replace each other.

What Is an EORI Number? Your Customs ID Explained

EORI stands for Economic Operators Registration and Identification. It is a unique ID that customs authorities use to recognise businesses involved in import and export.

Only customs authorities can issue it. It appears on your customs declarations, which helps authorities track shipments and process customs clearance.

The format depends on where it was issued:

• GB EORI: “GB” followed by 12 digits, for example GB123456789000
• XI EORI: starts with “XI” and is used for Northern Ireland trade
• EU EORI: starts with the two-letter code of the issuing member state

Without a required number, your goods can be delayed, held at the port or returned.

What Is a VAT Number? Your Tax ID Explained

A VAT number registers your business for value added tax. In the UK, it is issued by HMRC, and in other countries by the local tax authority.

You use it on VAT invoices, VAT returns and tax records. It shows customers and authorities that you are registered to charge and reclaim VAT.

Businesses usually need to register once their turnover passes a set threshold, or they can register voluntarily. Thresholds and rules differ by country, so always confirm with your tax authority.

EORI vs VAT Number: Side-by-Side Comparison

This table shows the main differences at a glance:

Feature	EORI number	VAT number
Purpose	Customs identification	Tax registration
Issued by	Customs authority	Tax authority
Used for	Import and export declarations	VAT invoices and returns
Needed when	Moving goods across borders	Meeting VAT registration rules
Cost via official route	Free	Free
Valid for	GB, XI or EU customs territory	The country where you registered

The key takeaway is simple. A VAT number proves you are registered for tax, but it does not tell customs who you are. An EORI number does exactly that.

Do You Need Both? A Simple Decision Guide

It depends on what your business does. Find the scenario closest to yours:

• VAT-registered, no cross-border goods: You likely need only a VAT number.
• Moving goods across borders, not VAT-registered: You may need an EORI number, even without VAT.
• VAT-registered importer or exporter: You will likely need both.
• Services-only business: You may not need an EORI number, since no goods cross a customs border.

Consider a UK online seller who is VAT registered and ships products to customers in Ireland. Because the shipments cross a customs border, the courier asks for an EORI number. The seller only has a VAT number, so the parcel is held while they sort it out.

That delay was avoidable. Also, some VAT-registered businesses may already hold an EORI number, so check before applying.

How the Two Numbers Work Together

Think of your VAT number as your tax identity and your EORI number as your customs identity. They work side by side on cross-border trade.

Your VAT number usually appears on commercial invoices and tax records. Your EORI number appears on customs declarations. On an import, customs and VAT details often sit on the same declaration, so both need to be correct.

In the UK, a GB EORI number is often based on your VAT number for VAT-registered businesses, usually “GB”, your nine-digit VAT number and “000”. That is why the two can look similar, but they are still separate registrations with separate purposes.

Keep both numbers handy and make sure your company details match across all your records.

Get Your EORI Number the Easy Way

You have two main routes to get your number.

The Free DIY Route

Apply directly with the relevant customs authority. In the UK, you can apply through GOV.UK. The number is usually issued immediately, or within about five working days if extra checks are needed. EU timelines vary by country.

The official route is free. The trade-off is time, since each authority has its own forms and requirements.

The Done-for-You Route

If you would rather focus on running your business, an intermediary can handle the paperwork. EORI.services is an independent intermediary that collects your details, prepares the application and submits it to the relevant customs authority on your behalf. It covers the 27 EU countries and the UK.

It is not a government body and does not issue any EORI number. It charges a service fee, and no service can guarantee approval, because only customs authorities decide. Compare the fee with the time you would save, then choose what suits you.

4 EORI vs VAT Mix-Ups to Avoid

A small mix-up can slow down your shipments. Watch out for these:

1. Assuming a VAT number replaces an EORI number.
   They are separate registrations with separate jobs.
2. Using the wrong number on the wrong document.
   Put your EORI number on customs declarations and your VAT number on VAT invoices.
3. Applying for the wrong type.
   A GB number does not cover EU customs declarations, and an EU number does not cover UK ones.
4. Typos in company details.
   Names or registration numbers that do not match official records can delay approval.

Final Thoughts: Two Numbers, Two Jobs

An EORI number and a VAT number are not rivals. They are partners with different roles: one keeps your goods moving through customs, the other keeps your tax affairs in order.

Work out which ones your business needs, apply through the right channel and keep your details consistent. Your cross-border trade will run a lot more smoothly.

This guide is for general information only. Tax and customs rules vary by country, so always confirm requirements with the relevant authority before applying.

EORI vs VAT FAQs: Quick Answers

1. Is an EORI number the same as a VAT number?
No. An EORI number identifies you to customs, while a VAT number registers you for tax.

2. Can I use my VAT number instead of an EORI number?
No. They serve different purposes, so one cannot replace the other.

3. Do I need an EORI number if I’m VAT registered?
If you move goods across borders, you will likely need one. Some VAT-registered businesses may already hold one, so check first.

4. Do I need a VAT number to get an EORI number?
No. Businesses that are not VAT registered can still apply for an EORI number.

5. Where do I use each number?
Your EORI number goes on customs declarations. Your VAT number goes on VAT invoices and returns.