---
title: "Secure till software (logiciel de caisse sécurisé, NF525) · Treats"
description: "French VAT law (article 286, I, 3° bis of the General Tax Code) requires every business that records payments from consumers to use till software meeting conditions of inalterability, security, retention and archiving of data."
url: https://www.treats.vet/en/glossary/logiciel-de-caisse/
lang: en-GB
updated: 2026-11-07
---

[Glossary](https://www.treats.vet/en/glossary/)

# Secure till softwarelogiciel de caisse sécurisé, NF525

French VAT law (article 286, I, 3° bis of the General Tax Code) requires every business that records payments from consumers to use till software meeting conditions of inalterability, security, retention and archiving of data.

The rule has applied since 1 January 2018, including to invoicing software with a till function, such as a practice’s [PMS](https://www.treats.vet/en/glossary/pms/).

Proof is either a certificate from an accredited body (such as the **NF525** mark) or, again since 21 February 2026, the publisher’s individual attestation (2026 Finance Act). NF525 is therefore a certification mark, not the legal obligation itself. Software without proof exposes the business to a €7,500 fine.

## Sources

* [BOFiP, reinstatement of the publisher attestation (2026)](https://bofip.impots.gouv.fr/bofip/15035-PGP.html/ACTU-2026-00073)
* [BOFiP, BOI-TVA-DECLA-30-10-30](https://bofip.impots.gouv.fr/bofip/10691-PGP.html/identifiant=BOI-TVA-DECLA-30-10-30-20210519)

 Checked on 7 November 2026 · by [Amir Davies](https://www.treats.vet/en/about/amir-davies/)

## See also

* [PMS](https://www.treats.vet/en/glossary/pms/) A veterinary PMS (practice management system) is the practice software that manages appointments, patient and client records, prescribing, dispensing, stock, invoicing and payments.
* [E-invoicing](https://www.treats.vet/en/glossary/facture-electronique/) French mandatory e-invoicing requires VAT-registered businesses to issue and receive business-to-business invoices in a structured format through an approved platform; e-reporting passes the data of other transactions, notably with consumers, to the tax authority.