PDF Invoice Generator
Build an invoice and download it as a real PDF file, drawn in your browser.
Invoice VAT Number Validator
Check EU and UK VAT numbers on invoices — format and check digit, country by country.
Quick Tool Overview
The Invoice VAT Number Validator checks EU and UK VAT numbers in bulk against the format each country uses and the published check-digit rule where there is one, and says plainly where a country publishes no algorithm at all.
- What it does
- Validates EU and UK VAT numbers
- You give it
- VAT numbers, with or without prefixes
- You get back
- Format and check-digit verdicts
- Best for
- Zero-rating and input VAT claims
About the Invoice VAT Number Validator
A wrong VAT number on an invoice is expensive in both directions. As the seller, an invalid customer VAT number means a zero-rated intra-community supply you cannot justify, and the VAT becomes yours to pay. As the buyer, an invalid supplier number can cost you the input VAT you reclaimed.
This checks a number, or a whole column of them, against the format its country actually uses — Germany’s nine digits, the Netherlands’ nine digits with a B and two more, Ireland’s mixed letters, the UK’s nine or twelve — and then against the published check-digit rule where the country has one. Several member states publish no algorithm, and the result says so rather than pretending.
Everything runs in your browser. Nothing is sent to VIES or anywhere else, which also means this cannot tell you who a number belongs to: for that, check it in VIES or HMRC’s service and keep the consultation number.
Key features of the Invoice VAT Number Validator
Per-country formats
All EU member states, the UK and XI.
Check digits
Where the rule is published and stable.
Bulk with CSV
A column of customers in one go.
Prefix handling
EL for Greece, XI for Northern Ireland.
No data sent
VIES confirms ownership; this catches typos.
How to use the Invoice VAT Number Validator
-
1
Paste the VAT numbers
With their country prefix — GB, DE, FR, IE and so on.
-
2
Or set a country
For numbers written without the prefix.
-
3
Read each verdict
Format, check digit, and what that does and does not prove.
-
4
Verify in VIES
For the ones you are about to zero-rate.
Frequently asked questions
No — VIES is an online service and this tool never sends your data anywhere. It checks the format and check digit locally, which catches typos; VIES confirms the number is registered and to whom.
Greek VAT numbers use the prefix EL, although the country code is GR. Both are accepted here.
XI numbers are used for goods traded between Northern Ireland and the EU, and follow the UK format. XI is accepted.
Almost always a typo: a transposed pair, an O typed for a zero. Ask the supplier to confirm the number, and check the invoice against their letterhead.
Reviews of the Invoice VAT Number Validator
What people who use the Invoice VAT Number Validator think of it. Reviews come from visitors and are posted as written.
No ratings yet
Yours would be the first.
- 5 0 reviews rated 5 stars
- 4 0 reviews rated 4 stars
- 3 0 reviews rated 3 stars
- 2 0 reviews rated 2 stars
- 1 0 reviews rated 1 star
0 reviews
Newest first
No reviews yet
Be the first to rate the Invoice VAT Number Validator. It takes half a minute and no account.
Write the first reviewMore invoice tools
Invoice Reminder Generator
The right reminder for how late it is, from a courtesy note to a final notice.
Invoice Template Generator
Design a reusable invoice template and download it as a blank you can fill in each time.
International Invoice Generator
Invoice a client abroad: their currency, their date format, and the right tax treatment.
Invoice Tax ID Validator
Check any tax number on an invoice — VAT, GSTIN, ABN, EIN, PAN or IBAN — against its own rule.
Invoice to XML
Turn an invoice into XML — plain and readable, or standards-compliant UBL or CII.
Estimate to Invoice
Turn an accepted estimate or quote into a numbered invoice without retyping it.
Invoice Generator with Bank Details
A clear payment block with the IBAN and account checked before you send it.