What are the mandatory mentions on an invoice?

A compliant invoice must include: your name and SIRET, client identity, a unique chronological invoice number, date, service description, amount excluding tax, and the mention 'VAT not applicable, art. 293 B of the CGI' if you're VAT-exempt.

Do I need an accountant as a micro-entrepreneur?

No, accounting in a micro-enterprise is simplified: a revenue book is sufficient. Free software like Indy automates the bookkeeping and your declarations. An accountant is only needed if you exceed thresholds and switch to the real tax regime.

How long must I keep my invoices?

You must keep all invoices and supporting documents for 10 years from the date of issue. This obligation is set by the Commercial Code. Keep them in digital format (PDF) for safety.

BeginnerAccountingRead 15 minUpdated March 2026

Create a 2026-compliant invoice

Mandatory information, format and mistakes to avoid on your invoices.

The 6 key steps

1Use certified invoicing software (Indy, Pennylane, Shine)
2Mandatory mentions: SIRET, invoice number, date, client identity
3Add VAT mention: 'VAT not applicable, art. 293 B of the CGI'
4Number invoices chronologically and continuously
5Keep all invoices for 10 years
6Send in PDF format to the client

Guide Micro-Entreprise

Editorial team · Business law & Taxation

Updated on 12 February 2026

Verified on official sourcesSources: URSSAF, DGFiP, LegifranceOur methodology

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