Tax Declaration for Micro-Entreprise

Micro-entreprise owners benefit from a simplified tax regime, where tax is calculated based on revenue with an automatic deduction depending on the activity type. This income must be declared in the annual tax return.

This page explains how to make or correct this declaration, what information to provide, and offers a ready-to-use letter template, plus a tool to automatically generate your personalized letter.

When should you write this letter?

• You recently started a micro-entreprise activity;
• You want to correct a previous revenue declaration;
• You want to inquire about the best tax payment system;
• You need to clarify your type of commercial activity.

In all these cases, a written letter remains a reliable way to clarify your situation.

Required information to include

• Your first and last name and SIRET number;
• Annual revenue achieved;
• Type of activity practiced (commercial, craft, service);
• The period concerned by the declaration.

The more accurate this information is, the more accurate your tax calculation.

Official letter template

Important note: the letter sent to the tax office must be written in French, as it is a French administration. Below is a template you can use as a basis.

[First name LAST NAME]
[Full address]
[Tax number]

Tax Office for Individuals of [City]
[Office address]

Written in [City], on [Date]

Subject: Micro-entreprise income declaration

Dear Sir/Madam,

I am informing you of my micro-entreprise revenue for [period]: [amount] euros.

[...]

→ The complete letter, tailored precisely to your situation and ready to send, is generated automatically in 3 minutes using the tool above.

Frequently Asked Questions

How is tax calculated in the micro-entreprise system?

Based on revenue with an automatic deduction (%) depending on activity type, without deducting actual expenses.

What is the revenue ceiling for this system?

It varies depending on activity type (sales, services), and is periodically reviewed.

Can I choose monthly or quarterly tax payment?

Yes, you can choose the payment frequency that suits you when registering.

What if I exceed the specified ceiling?

You may automatically transition to another tax regime, requiring declaration of this.

Do I need to declare even with zero revenue?

Yes, you must declare 0 even if no income was achieved during the period.