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How do you switch from a micro-entreprise to a company?

You do not convert a micro-entreprise: you set up a company, then close the sole proprietorship (or contribute your business to the company).
By Razvan Toma · Founder

Last updated 22 October 2026Sources cited in the text

TL;DR

A micro-entreprise cannot be converted into a company: it is a sole proprietorship. To move to a company, you set up the company, then declare the closure of the micro-entreprise on the guichet unique (the single online filing portal), or you contribute your business (clientele, equipment) to the company, which may require a valuation.

The steps

  1. Choose the form (SASU, EURL…) and set up the company.
  2. Decide what happens to the sole proprietorship: closure, or contribution of the business to the company.
  3. Declare the closure of the micro-entreprise on the guichet unique.
  4. Inform your customers, change bank account and invoicing number.

When to do it

Most often when turnover approaches the micro regime ceilings, or when you have high expenses that the micro regime does not let you deduct.

Written by Razvan Toma, founder of LegalRapide. How we check our figures · LinkedIn

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