Getting started
Create an account, enter your first contract and receive your first automatic revision in under 10 minutes.
1. Create an account
Go to /login. Enter your professional email address and click Get the link →.
A login link is sent to your email (valid for 15 minutes). No password needed — authentication is via magic link.
14-day free trial — no credit card required. You get access to all Solo plan features during the trial.
2. Create your first contract
From the dashboard, click + New contract. Fill in the form:
| Field | Description | Example |
|---|---|---|
| Name | Internal contract identifier | Building A painting works |
| Formula | Indexation type | CCAG Works (BT/TP) |
| Reference index | INSEE series code | BT01 |
| Initial price P₀ | Pre-tax amount at reference date | €100,000 |
| Index value I₀ | Index value at the reference date | 1,198.5 |
| Reference period | Contract base month (YYYY-MM) | 2024-01 |
| Frequency | Revision frequency | 12 months (annual) |
Finding the I₀ index value
The I₀ value is the index value at the month the contract was signed. You can find it on:
- The INSEE Indices page on IndexFacile (24-month history)
- The INSEE website (BDM - Macroeconomic Data Bank)
CCAG Works formula
P = P₀ × (0.15 + 0.85 × I / I₀)- 0.15: fixed part (non-revisable)
- 0.85: variable part (revised with the index)
- These coefficients are customisable via the α and β fields
3. Wait for the next INSEE publication
IndexFacile synchronises indices daily. As soon as a new value for your index is published:
- The calculation is performed automatically
- You receive an alert email with the revision details
- The PDF letter is available on the contract page
You can also use the free calculator to test a calculation immediately, without creating an account.
Getting started checklist
- Account created and session open
- First contract created with correct P₀, I₀ and index
- Welcome email received
- Dashboard accessible with contract status badge