One-off payment, no subscription. The exact price for your filing is shown before any payment.
Price including VAT, as a one‑off payment, with no subscription or hidden fees. The exact price for your filing is shown on the summary, before any payment. A licensed payment provider collects the payment and sends you the receipt: on your bank statement, the line shows “CLAIRSIGN”. If your document could not be signed within 24 hours of your payment, you can request a full refund (terms of sale).
The summary document you uploaded, with your advanced electronic signature (eIDAS) inside.
As an attachment, with the simple steps to upload it without mistakes.
Go back to your filing and upload the PDF as it is.

The Guichet unique offers FranceConnect+, which is free. ClairSign lets you sign without setting up a digital identity.
| Criterion | FranceConnect+ | ClairSign |
|---|---|---|
| Price | Free | From €19.90 incl. VAT, one‑off payment |
| What you need | A high-level digital identity: L’Identité Numérique La Poste or France Identité | Your summary document and an email address |
| With France Identité | A chip ID card (issued since 2021) and an NFC-enabled phone (contactless reading) | Nothing else: no card to read, no app to install |
| Setup | Instant with France Identité if everything is compatible, a few days with La Poste | None: your signed document arrives within minutes |
| Where | Directly on the Guichet unique | On a computer, tablet or phone, then you upload the signed document |
| If you get stuck | FranceConnect+ support only answers questions about FranceConnect+ | Our team helps you 7 days a week |
No digital identity activated yet, or it does not go through? ClairSign signs your document in a few minutes. Both options in the INPI FAQ
The price starts at €19.90 incl. VAT. The exact price for your formality is shown before any payment.
No. You pay once, for one document. No further charges follow.
A licensed payment provider collects the payment and sends you the receipt. On your statement, the line shows “CLAIRSIGN”.
Your document couldn’t be signed within 24 hours of payment? You can request a full refund.
Yes. The available payment methods are shown at checkout.