We recommend that you get together all personal identification documents ready for uploading when you make the application. These fall into 3 categories (based on the initial application process, but may include other material that we are not aware of at the time of writing)
- Identification - passports, birth certificates, marriage certificates etc.
- Proof of residency - EDF bills and other utilities, letters from landlords or mairies. Taxe fonciere and d'habitation paperwork.
- Proof of eligibility - financial position - tax returns for as many years as you have submitted them. If you have submitted these online you should be able to download copies from your personal space on the impots.gouv web site. It is likely that you will need a recent attestation for healthcare cover too.
The important thing is that these documents are recent, and in the case of passports, valid.