Sweden VAT-nummer validator
How the VAT-nummer format works
- Format
- SE + 12 digits
- Example
- SE123456789101
Things to watch for
- The final two digits are typically 01 for the main branch
- This tool checks the format only; no check-digit validation is performed
^SE[0-9]{12}$Sweden’s VAT number, the Momsnr (VAT-nummer), is “SE” followed by 12 digits — the longest all-numeric VAT format in the EU, as in SE123456789101. Those 12 digits aren’t a code invented just for VAT: the first 10 are the company’s organisationsnummer, the same organization number Sweden’s companies register (Bolagsverket) and other government filings already use, with 2 additional digits appended to identify a specific branch.
The near-universal detail is what those final two digits usually are: “01”, marking the main establishment. Seeing anything other than “01” at the end isn’t wrong, but it’s uncommon enough that a business processing mostly head-office invoices may never encounter it — worth knowing so a non-“01” ending doesn’t get flagged as a typo when it’s actually a branch identifier doing exactly what it’s meant to do.
What gets validated here
This validator confirms the “SE” prefix and counts exactly 12 digits, entirely in your browser, with no signup and nothing sent to a server. It’s a length-and-prefix check — no check-digit formula is applied to the embedded organisationsnummer here.
What’s not covered
A correctly shaped Momsnr doesn’t confirm an active VAT registration today. Confirm through the EU’s VIES lookup or Skatteverket directly before relying on it for invoicing.
Scope: Momsnr/VAT format only — not check-digit validation or registration status.
Content last reviewed 2026-07-07.
VAT-nummer FAQ
Why do Swedish VAT numbers end in 01?
The final two digits mark the branch: '01' identifies the main establishment of a business. Sweden's VAT number is built from the company's 10-digit organisationsnummer (organization number) with those two branch digits appended, so '...01' is the version you'll see for the vast majority of businesses.
Is the 10-digit part of a Swedish VAT number the same as the company's other registration number?
Yes — it's the organisationsnummer, the same identifier Sweden uses for the general company register (Bolagsverket) and other official filings, not a separate number minted only for VAT.
Does a correctly formatted Momsnr confirm the business is currently VAT-registered?
No — this tool checks format only. Confirm live status through the EU's VIES lookup or Sweden's Skatteverket (Tax Agency).