I have 6 month contract in France which is about to be extended. I am employed by a UK umbrella and currently pay UK social security and income tax. If this contract is extended past 183 (6 months) I will become tax resident in France.

Can any one tell me the following. If I have an E101 I will still pay UK social security but how much French Income tax will I pay?

Will the french tax man deduct my UK social security and then I will pay income tax on the net amount or does he do something else ?

I have seen other articles on the forum about this but haven't seen the point above....