If you're unsure of when and how much to tip, our partner Business Insider has the deets so you'll never have to worry about shortchanging someone again.

According to the rest of the world, Americans (more specifically, New Yorkers) are the most generous tippers out there.
RELATED: Manhattan Sushi Restaurant Bans Customers From Tipping
But even within the U.S., tipping etiquette changes in just about every region. It may be customary to leave an extra 20% for your waiter in Manhattan, but a waiter in Atlanta may be thrilled to get 15%. To help, here's a complete guide to gratuity etiquette, courtesy of Mint.com.
Brush up on your math and the next time you hire a mover or order room service, you and your wallet will be prepared.

Tipping is a custom that allows you to express appreciation for a job well done. But when it comes to salon, spa, and nail services, it can be hard to decide who and how much to tip — especially on a color job gone wrong. And while tipping is at your discretion, here are a few suggestions on amounts to give in a variety of circumstances. See the guidelines when you



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To tip or not to tip, that is the question everyone is thinking about during this holiday season. Although we're emerging from the recession, the economy is still not a pretty picture. So how much should we tip others when we're carefully watching our purse strings? Here are some rules you should follow:
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If you're like me, you tend to tip more when a waitress has been especially charming and efficient, or none at all when you experience really bad attitude from a cabbie. That's because tipping rewards and promotes good service, right? Think again. Studies show that people still tip when they receive bad service and the amount people give doesn't vary drastically with how satisfied they were with the service,