Late EU VAT Registration — What Do I Do Now?
If you have just realised your UK business has an EU VAT obligation you have not been meeting, you are not alone — and it is fixable. The EU VAT system is entirely separate from HMRC and UK domestic tax. Missing EU obligations is a common mistake for UK sellers, particularly those who grew up operating under EU rules pre-Brexit and assumed those rules no longer applied to them.
For the full guide on how to handle late registration — calculating what you owe, the voluntary disclosure approach, penalty structures, and a week-by-week action plan — see:
Late EU VAT Registration — Penalties, Back-Taxes & How to Fix It
HMRC Is Not Involved
Section titled “HMRC Is Not Involved”This is the most important UK-specific point: HMRC does not administer EU VAT. Voluntary disclosure for EU VAT obligations is made directly to EU tax authorities (typically the member state where you register — most commonly Ireland for UK businesses).
HMRC and EU VAT authorities operate entirely independently. Having a clean HMRC compliance record does not reduce or eliminate EU VAT obligations, and an EU VAT issue does not affect your HMRC standing. They are separate systems.
This also means the “just sort it with HMRC” approach does not work. If you have unmet EU VAT obligations, the disclosure goes to the relevant EU authority — not to HMRC. A UK accountant who tells you otherwise should be treated with caution.
The Non-Union OSS Threshold for UK Digital Sellers
Section titled “The Non-Union OSS Threshold for UK Digital Sellers”If you sell digital services (SaaS, ebooks, software) to EU consumers, the threshold that applies is €0 from your first sale. This is a specific post-Brexit change that catches UK digital sellers.
Before Brexit, UK sellers were inside the EU VAT system and benefited from the €10,000 cross-border threshold. Since Brexit, UK sellers are treated as non-EU sellers. Non-EU sellers have no threshold — the obligation starts from the first sale.
Many UK software and digital product businesses that started selling to EU consumers immediately after Brexit without registering are now discovering they have back-liability running for several years. The approach described in the shared guide — voluntary disclosure, honest registration date, back-filing, payment — applies equally to UK businesses. The EU does not treat UK businesses differently from other non-EU sellers in the disclosure process.
Using Ireland as Your Registration Country
Section titled “Using Ireland as Your Registration Country”Most UK businesses registering for Non-Union OSS choose Ireland as their Member State of Identification. The reasons are practical:
- Revenue.ie (the Irish tax authority) has a well-documented, English-language registration process for non-EU businesses
- Support is available in English, without the language barrier that exists with German, French, or Dutch portals
- Ireland is the most common choice for UK digital sellers
Choosing Ireland has no effect on the VAT rates you charge, the countries you can sell to, or the amount of VAT you owe. It only determines which EU country you file your quarterly OSS return with.
What Your UK Accountant Should Know
Section titled “What Your UK Accountant Should Know”When approaching an accountant or VAT specialist about late EU registration, look for someone with cross-border EU experience, not just UK VAT expertise. The two are different disciplines.
Red flags specific to UK advisers:
- “You’re in the UK — they can’t reach you.” EU tax authorities share data with each other and with platforms under DAC7. They can and do identify non-compliant UK sellers. See Digital Goods VAT Risks.
- “Just register from today.” Registering without disclosing past obligations is a red flag on your registration and can trigger an immediate compliance review. Honest backdating is always the right approach.
- “HMRC can sort this out.” HMRC has no jurisdiction over EU VAT. Your adviser should be speaking to EU authorities directly or connecting you with someone who can.
If your back-liability is significant, a specialist EU VAT compliance firm (such as those listed in the IOSS intermediary comparison) is often better placed than a generalist UK accountant.