TL;DR
What can be completed in 24 hours is the filing of a complete application with the guichet unique (the single online business registration portal). Registration, and therefore the Kbis, then depends on approval by the greffe (commercial court registry), which no one can guarantee. With the Rapide plan, LegalRapide commits to filing within 24 business hours of receiving your complete application, or the service fee is refunded. 
Service-public
What turnaround promises actually mean
| Wording used | What it usually measures |
|---|---|
| "Processed in 24h" | The provider's internal work |
| "Filed in 24h" | Submission to the guichet unique |
| "Kbis in 48h" | A timeframe that depends on the greffe, so not guaranteed |
To move fast
Prepare in advance: a legible ID document, proof of registered office, share capital ready to be paid in. Use the formation timeline.
Written by Razvan Toma, founder of LegalRapide. How we check our figures · LinkedIn