Welcome to IndexFacile
Automatic price revision based on INSEE indices — BT01, Syntec, ILC, ILAT, IRL.
IndexFacile automatically calculates your price revisions at each INSEE index publication and generates a ready-to-send revision letter.
How it works
- Create a contract — enter the initial amount (P₀), reference index value (I₀), formula type and revision frequency.
- IndexFacile monitors INSEE — a daily cron job fetches new values via the public BDM API.
- Receive the alert and letter — as soon as an index affecting your contracts is published, you receive an email with the calculated revision and a link to download the PDF.
Supported formulas
| Formula | Typical use |
|---|---|
| CCAG Works (BT/TP) | Public construction contracts |
| Syntec / ICS | IT service contracts |
| ILC | Commercial leases |
| ILAT | Tertiary activity leases |
| IRL | Residential leases |
| Free formula | Any other parameterizable contract |
Available plans
| Plan | Contracts | API v1 | Price |
|---|---|---|---|
| Solo | 5 | — | €29/month |
| Pro | 20 | ✅ | €49/month |
| Cabinet | Unlimited + CSV import | ✅ | €79/month |
14-day free trial, no credit card required.
Documentation sections
- Getting started — create an account and your first contract
- Contracts — CRUD, formulas, CSV import
- Revisions — automatic calculation, badges, auditable table
- PDF letters — download the letter and amendment
- API v1 — Excel/ERP integration (PRO/Cabinet)