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 10 minUpdated March 2026

Set up Indy for your micro

Automate your URSSAF declarations and accounting with Indy (free).

⚙️The 5 key steps

1Create a free account on indy.fr
2Enter your SIRET and activity
3Connect your bank account for automatic tracking
4Configure expense categories
5Enable URSSAF declaration reminders

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Frequently asked questions

What are the mandatory mentions on an invoice?

Do I need an accountant as a micro-entrepreneur?

How long must I keep my invoices?