Explanation
In France, a service charge is always included in the menu price (service compris), so tipping is not obligatory. However, leaving a small extra amount (5-10% of the bill) as a gesture of appreciation for good service is considered polite and customary. It is seen as a reward for exceptional service rather than an expected part of the meal.
Local Tip
Leave a few euros in cash on the table or round up the bill to the nearest 5 or 10 euros, but never leave a large percentage like in the US.
How it compares elsewhere
Tipping is considered insulting; excellent service is the norm and no extra payment is expected.
Tipping 15-20% is mandatory as service staff rely on tips for their income.
Tipping is not required but a small 'coperto' (cover charge) is often included; leaving a few euros is appreciated but not expected.