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 8 minUpdated March 2026

Top 5 free invoicing software (2026)

Indy, Abby, Henrri, Facture.net, Freebe: which free invoicing software to choose for micro-enterprise? Feature and limitations comparison.

The 4 key steps

1Understand the criteria for choosing invoicing software
2Compare the 5 best free tools
3Choose based on your profile (volume, needs, activity)
4Prepare for 2027 electronic invoicing

Guide Micro-Entreprise

Editorial team · Business law & Taxation

Updated on 21 March 2026

Verified on official sourcesSources: URSSAF, DGFiP, LegifranceOur methodology

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