INSEE only corrects its own mistakes. If your activity changed along the way, the single window is where you declare it.
One question is enough to know which case you are in, and if INSEE is the right place, you leave with the table to attach to your request.
Save your identity once: it will fill in the twelve forms. It stays on this device.
Depending on your answer, you will not be writing to the same place.
Everything happens on your device: the table is built there, nobody receives your answers, not even us, and it all disappears with the tab.
Information verified on October 1, 2026. Document composed from the model published by the French authorities, and dated. It is not legal advice: you remain responsible for the accuracy of what you declare and sign.
The official pages where we read the rules and amounts applied here.
Settle this first: it is where most time gets lost. If your code never matched what you do, it is a coding error, and INSEE corrects it on request. If your activity has changed since, go through the single window: INSEE will work out the new code on its own, you do not have to ask for it.
The request is made on insee.fr, in an online form, and you have to attach a table describing your activities. That is the table you prepare here. Its notice sets three rules, and INSEE sends back tables that do not follow them:
The notice gives its example: « manufacture and installation of shutters » is two activities, so two lines. But « sale of books and records » is only one: you sell, and you sell two things. For retail, the notice even asks you to state the product or products concerned. Look at what your « and » is joining: two trades, or two products of one trade.
The APE code has no legal force. It decides neither your tax category, nor your contribution rate, nor your pension fund: all of that depends on what you receive, not on what is written on your notice. Having it corrected will change nothing about what you pay. It is your clients, your bank and your insurer who read it, and that is who it is worth doing for.
| Your situation | Where to go | What to provide |
|---|---|---|
| The code never matched | INSEE, online form | The activity table |
| Your activity has changed | Single window | The modification declaration |
| You do not like the wording | Nowhere | The code has no legal force |
| You have several establishments | INSEE, one table per establishment | The APET table |
Either way the procedure is free, and INSEE replies within twenty working days, explaining its decision. Some websites offer to handle it for you for a fee: you do not need them, and INSEE appoints nobody.
From day one, her situation notice files her in a category that says nothing about her trade.
She fills in two lines: creating logos and visual identities for 70%, designing websites for 30%.
She attaches the table to INSEE's form, and the code is corrected three weeks later.
Her contributions did not move by a euro. Her situation notice, though, finally says what she does.
Fill in the table here, then attach it to the revision request form on insee.fr.
Describe your activities in your own words. No code, no job title, the notice refuses them.
Allow twenty working days for the reply, which will explain the decision.
Declare the change to the single window. That is what triggers the new code.
It has to be a real and lasting change, not a good season on one of your services.
Asking again several times in the same year without reason gets you nowhere, INSEE sets those requests aside.
No. Your contributions depend on what you receive, line by line in your turnover return, not on the code written on your situation notice. Have it corrected anyway: your clients, your bank and your insurer use it to place you.
Nothing. Both the request to INSEE and the declaration to the single window are free. Some websites offer to handle it for a fee: you do not need them, and INSEE appoints nobody.
Because INSEE picks your main activity from each one's share of your turnover. If the total is not one hundred, it has nothing to go on, and the table comes back unexamined. That is why we add up the total as you fill it in.
No, the notice refuses job titles as much as activity codes. Say what you do instead: « creating logos and visual identities » rather than « graphic designer », « designing websites » rather than « web developer ».
No. This one covers the company, and it is enough when you have a single establishment. With several, INSEE asks for one table per establishment concerned, the APET table, downloadable from its site.
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