Tipping is pretty standard in the restaurant and personal services industries.
But what about people who help with your home - like your plumber or handyman?
Experts say a quarter to a half of business gives us either the company or specific workers tips.
And Angie's list says you don't always have to give a gift of cash to show your gratitude.
"This time of year the question of tipping your service company comes up really often. Most people automatically think I need to pay cash. What they don't realize is there are lots of other options. For example, I think one of the most powerful ways to say thank you to a provider to write a nice letter to their company telling them what great service they provided to you throughout the year," said Angie Hicks.
You should never feel obligated to tip, but if you do decide to tip your tradesperson this holiday season, talk with the company owner first to make sure it's okay.
Some companies don't allow their employees to accept tips.