UK VAT Registration for Foreign Companies Selling Into the UK

If your company sells goods or services into the UK from overseas, VAT registration is one of the areas most likely to catch you out. The rules differ depending on what you are selling, how you are selling it, and whether you have a UK entity at all. This guide covers what foreign companies actually need to know in 2026.

Do you need to register for UK VAT?

There are two separate triggers for UK VAT registration.

1. Mandatory registration

Once UK taxable turnover exceeds the current VAT threshold (checked on a rolling 12-month basis), registration becomes compulsory. This applies whether you are UK-incorporated or a foreign company trading into the UK.

2. Voluntary registration

You can register before hitting the threshold, and many foreign SMEs choose to. The main reasons: registering lets you reclaim VAT on UK setup costs — professional fees, office, equipment — rather than absorbing it, and it makes your business look more established to UK clients who expect to see a VAT number on invoices.

Goods vs services: different rules apply

Selling goods into the UK

If you are importing goods to sell to UK customers, VAT and customs rules interact — you may need to account for import VAT at the border in addition to registering for VAT on your UK sales. Post-Brexit, this is more complex for EU-based sellers who no longer benefit from intra-EU simplifications.

Selling services into the UK

Generally simpler than goods, but the VAT treatment depends on whether your customer is a UK business (B2B) or a UK consumer (B2C). B2B transactions are often subject to reverse-charge, where the UK customer accounts for VAT themselves. B2C digital services usually require you to charge and account for UK VAT directly.

How to register for UK VAT

• Determine your registration route — UK-incorporated subsidiaries register through the standard process; non-established taxable persons (foreign businesses with no UK entity) follow a separate route.
• Gather documentation — business details, turnover estimates, bank details, and for foreign companies the parent's incorporation documents.
• Submit the application to HMRC, typically online. Non-resident applications sometimes require additional verification.
• Receive your VAT number. Processing times vary, but foreign/non-established applications often take longer than standard UK business registrations.
• Start charging and accounting for VAT from your effective registration date, including quarterly VAT returns via Making Tax Digital-compatible software.

Common mistakes foreign companies make

• Assuming the threshold always applies — overseas businesses with no UK establishment sometimes have no threshold at all for certain goods sales, so waiting until you 'hit the threshold' can mean you are already non-compliant.
• Conflating VAT registration with company incorporation — they are separate processes.
• Missing the goods/services distinction — applying B2B service logic to a goods sale (or vice versa) is a common and costly error for e-commerce sellers.
• Underestimating post-Brexit import complexity — EU sellers in particular sometimes plan around pre-Brexit rules that no longer apply.
• Not budgeting for Making Tax Digital — VAT-registered businesses must keep digital records and file returns through compatible software, set up before the first return is due.

When voluntary registration makes sense

• Your UK clients are primarily VAT-registered businesses themselves (B2B), who can reclaim the VAT you charge — cost-neutral to them.
• You expect to cross the threshold within the next few months and want to avoid a mid-year registration scramble.
• A VAT number improves credibility with UK procurement processes, which often require one as a supplier prerequisite.