VAT refund & calculation in PARIS?

Question

I'm a little confused with the VAT calculation and refund. Some said we can get 12% back in the refund and some said 14%, what's the refund rate?

Can someone help me?

Let say I buy a product in France for Euro 400, how much VAT (19.5% right?) I have to pay first and how much (or how many %) will I get back in refund?

(Can someone show me the formula how to calculate, sorry that my math is pretty bad!)

When I do the VAT refund, will they apply some service/processing fee on that?

Answer 1

All you need to know is that the retailer will giver you a  Retail Export Form ("bordereau de détaxe"), and that the amount of refund will be shown on it.