Tax Free in France
French sales tax, or VAT (value-added tax), is 19.6%, but you can get most of that back if you spend 175€ ($228) or more at any participating retailer. You must be over 15 years old, and you must present a passport.
The name of the refund is detaxe, meaning exactly what it says. You never really get the full 19.6% back, but you can come close.
After you spend the required minimum amount, ask for your detaxe papers; fill out the forms before you arrive at the airport, and allow at least half an hour for standing in line. All refunds are processed at the final point of departure from the E.U., so if you're going to another E.U. country, you don't apply for the refund in France.