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Skip to contentValidate German VAT ID (USt-IdNr.) format. Tentaco VAT ID Validator: review input and get an instant result — free, no sign-up.
Full tool — runs in your browser. No sign-up required.
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Validate German VAT ID (USt-IdNr.) format. Runs entirely in your browser — nothing is uploaded.
Paste or enter your input into Tentaco VAT ID Validator. Standard processing runs locally in your browser — contents are not sent to Tentaco servers for that path.
The primary button opens the matching studio mode so you can start without an account. People often search for: vat id, ust idnr, de vat.
Open VAT ID Validator via the studio button (direct mode).
Paste or type your input.
Adjust options and review the preview or output.
Copy or save the result and re-run if needed.
Transfer to Tentaco: No for the standard mode. Processing: local in the browser. Permanent storage: only if you copy or save the result yourself.
LocalThis tool processes data locally in your browser. Tentaco does not receive your file contents for this mode.
VAT ID Validator provides the function described in the intro directly in your browser — no installer.
No. VAT ID Validator processes the standard mode locally in your browser; Tentaco does not receive your input for that path.
No. Open VAT ID Validator and start immediately.
No. VAT ID Validator is a technical helper and does not replace legal, tax or professional advice.
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