What a VAT number is, why some countries use it, and why the United States does not. If you sell stuff online or run a small business that reaches customers in other countries, this is one of those things you cannot ignore. Read on, we kept it plain and practical.
What Is VAT and How Does It Work?
VAT stands for Value Added Tax. It is a consumption tax that is applied at multiple stages of producing and selling a product. Every business in the chain charges VAT on its sales, but it also gets credit for the VAT it already paid on purchases. Governments collect VAT at each stage, and in the end, only the final consumer pays the full tax.
Take a simple example, supposing there is a 10% VAT rate. A seller buys goods for $100 + $10 VAT. Then the seller sells goods to the next buyer. They sell for $150 + $15 VAT. So the next buyer pays $165. After the deal is done, the seller reports VAT to the tax authority. The seller collects $15 in VAT, but they already paid $10 in VAT in their last purchase, so they pay the government only $5. That $5 represents the value they added ($50 added value × 10%).
This system is common around the world (like in the EU countries, the UK, Canada, and Australia) and is the main way many countries raise revenue from consumption.
What Is a VAT Number?
It is a unique identifier given to a business by a country’s tax authority after the business registers for VAT. The number is used for tracking VAT on sales and purchases.
Think of it like a business ID for VAT purposes. You use it on invoices, you show it when trading across borders inside economic regions, and some businesses use it to check whether they can apply special VAT rules like the reverse charge. Many countries put a country code at the front of the VAT code so you can tell where it came from.
The VAT Number Is Not the Same Everywhere
There is no single global format for a Value Added Tax number. Each country designs its own.
In the EU, the number usually starts with two letters for the country and then several digits or letters. For example, the UK uses the letters GB followed by nine numbers. Other countries use different lengths and mixes of letters. That means you cannot assume a format unless you know which country you are dealing with.
How do Companies Employ VAT Numbers?
If you do business in a country using VAT, you will likely need to show your VAT registration number on invoices and sometimes on customs paperwork.
For B2B international sales, VAT is often handled through the reverse charge mechanism, meaning the seller does not charge VAT and the buyer accounts for the VAT in their own country using their own business VAT number.
For B2C sales, the seller usually must charge VAT at the customer’s local VAT rate and then remit that tax to the authorities.
There may be special rules, but those are the main behaviors.
Why a VAT Number Is Needed for Customs Clearance?
VAT details are needed during customs clearance to identify who is responsible for paying VAT and who is allowed to claim VAT back. Without it, customs cannot assign the shipment to the correct taxpayer. If the importer is VAT-registered, the VAT code allows the business to reclaim import VAT.
Besides, some customs programs require a VAT code, for example: deferred VAT accounting, postponed VAT accounting (PVA), customs warehousing, etc.
VAT numbers also allow customs to verify the importer is legitimate, prevent undervaluation or tax evasion, and track import-export activity.
What Is a VAT Number in the US?
No. The United States does not have a federal VAT. The U.S. tax system for sales works differently. Rather than a VAT collected at every stage, the U.S. relies on state and local sales taxes that are charged at the final point of sale to the consumer. Since VAT is not part of the U.S. tax structure, the federal government does not issue VAT numbers.
Instead of a VAT code, U.S. businesses use tax identifiers like the EIN (Employer Identification Number), a nine-digit number the IRS gives a company for federal tax purposes. An EIN can be used on tax filings, bank accounts, payroll and similar things. But it is not a VAT number, and foreign tax authorities will not accept it as one.
If you need to trade into a VAT country, you will generally have to register for VAT in that country and get a local VAT ID.
When Does a U.S. Company Have to Register for VAT Abroad?
There are a few common triggers. If you sell to consumers in a VAT country, many jurisdictions expect you to register and charge VAT from your first sale. Some countries have a small-seller threshold; others do not.
The EU has schemes designed to simplify VAT compliance for foreign sellers. The Import One-Stop Shop (IOSS) helps with low-value goods imported into the EU, allowing sellers to collect VAT at checkout and avoid customs charges for customers.
The One-Stop Shop (OSS) simplifies VAT reporting, but non-EU businesses can only use it for services or for goods stored and sold from within the EU.
Also, having a warehouse, employees, or physical presence in a country can create VAT obligations. For digital services, several countries require registration even if you never set foot there.
However, for B2B sales, a VAT registration code is usually not required, because the reverse charge mechanism applies and the buyer accounts for VAT.
How to Get a VAT Number?
If the importing country requires VAT, you should apply for a VAT number before the shipment arrives. Most countries allow quick VAT registration. After you determine which country you need to register in, prepare documents like your business registration certificate, proof of address, your passport or ID, bank account, or payment information. Then you apply to the tax authority of that country online or through an agent. Once approved, you will receive your VAT number.
Or you can let your freight forwarder or customs broker act as the importer of record (IOR). The forwarder clears the goods using their VAT or EORI number, and they charge you fees and the VAT amount. In this case, you cannot reclaim that VAT because the VAT invoice is not in your name.
Some countries, as mentioned above, also allow using a temporary VAT number for clearance, along with an EORI and your company ID.
How to Check Someone Else’s Registered VAT Number?
In the European Union, there is an online service called VIES that lets you verify whether a VAT code is registered and valid for cross-border trade. You enter the country code and the VAT number, and VIES checks with national databases. Many other regions have similar validation tools. Always check before issuing a reverse charge invoice or relying on a buyer’s VAT number for a tax-free sale.
What Happens If You Get It Wrong
You can face penalties, back taxes, and interest if a tax authority finds that you should have been registered and collecting VAT. Penalties vary by country, but none of them are pleasant.
Also, do not assume that because you sell tiny volumes, nobody will notice. Marketplaces and payment processors have been asked to share transaction data with tax authorities, which makes it easier for them to spot non-compliance.
If you are selling internationally, do not assume ignorance is a defense.
Practical Steps for a Business Selling Internationally
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Figure out where your customers are and if those countries use VAT.
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Check whether the country has a registration threshold or requires registration from the first sale. Do this before you list or market heavily.
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If you collect VAT, put your VAT number on invoices and keep tidy records. If you do not collect VAT but sell to business customers, verify their VAT numbers before issuing a zero-rated invoice.
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Use the OSS or IOSS if the EU scheme fits your business. It is not magic, but it stops you from having dozens of local registrations.
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When in doubt, talk to a VAT specialist or use a compliance tool to monitor sales and trigger alerts. Or work with a trusted freight forwarder like Foresmart, leaving customs and shipping hassles to them.
Final Words
A VAT number is not a mysterious code. It is simply a registration ID used in countries that collect VAT. If you sell only inside the United States, you will deal with sales tax and not VAT. If you sell to customers abroad, you need to learn at least the basics of VAT rules for those markets, or get someone who can handle it for you. It will save you headaches later, and probably money too.
Frequently Asked Questions (FAQs)
Is a VAT number the same as an EIN?
One frequent mistake is thinking an EIN equals a VAT code. But they serve different purposes, are issued by different authorities, and are used in different tax systems.
The VAT number is used in VAT countries like the EU, UK, or Australia for Value-Added Tax purposes. But the EIN is used only by U.S. businesses as a “federal tax ID.”
Can you claim back VAT paid abroad?
Yes, sometimes. If you are VAT registered in a country, you can typically deduct the VAT you paid on business purchases from the VAT you collected on sales. There are also mechanisms to reclaim VAT you paid in countries where you are not registered, but these refunds are administrative and often slow. Rules differ widely, so treat each case as unique.
Are sales tax and VAT the same?
No, sales tax and VAT are not the same, although both are taxes on consumption. Sales tax is used in the United States, charged only at the final sale to the consumer, and rates vary by state and local governments. Conversely, VAT is a multi-stage tax with credits at each step in countries like the EU, UK, or Canada, not in the U.S. The VAT rate is standardized at the national level.
Is VAT the same as SSN?
No, they are different. SSN is a personal identification number for individuals in the U.S., not related to business sales, customs, or VAT.
What is double taxation?
Double taxation means taxing the same value multiple times along the supply chain. But VAT avoids double taxation because businesses credit the VAT they already paid, so only the added value at each stage is taxed.
One frequent mistake is thinking an EIN equals a VAT code. But they serve different purposes, are issued by different authorities, and are used in different tax systems.
The VAT number is used in VAT countries like the EU, UK, or Australia for Value-Added Tax purposes. But the EIN is used only by U.S. businesses as a “federal tax ID.”
Yes, sometimes. If you are VAT registered in a country, you can typically deduct the VAT you paid on business purchases from the VAT you collected on sales. There are also mechanisms to reclaim VAT you paid in countries where you are not registered, but these refunds are administrative and often slow. Rules differ widely, so treat each case as unique.
No, sales tax and VAT are not the same, although both are taxes on consumption. Sales tax is used in the United States, charged only at the final sale to the consumer, and rates vary by state and local governments. Conversely, VAT is a multi-stage tax with credits at each step in countries like the EU, UK, or Canada, not in the U.S. The VAT rate is standardized at the national level.
No, they are different. SSN is a personal identification number for individuals in the U.S., not related to business sales, customs, or VAT.
Double taxation means taxing the same value multiple times along the supply chain. But VAT avoids double taxation because businesses credit the VAT they already paid, so only the added value at each stage is taxed.
