[charlesdm]

1. Assuming you keep it in a company, and actually are smart about releasing it when you need it, so you don't have to pay all the tax upfront.

[karambahh]

"keep it in a company" at least in France won't really help you, as social contributions are collected every 3 months.

They are very good at hounding you to pay (and inversely keen on giving you back any overpaid amount ;-) ) so the incorporation does not really help here. You still owe them about half the gross revenue.

[charlesdm]

Sounds like a good reason not to bootstrap a company in France!