What services should you be tipping for?

Has tipping culture in the US gotten out of control? Cornell University Professor of Services Marketing Michael Lynn joins Wealth! as part of Yahoo Finance's Small Business: Big Opportunities special this week to break down when and how you should be tipping next time a screen is turned around asking you to make a gratuity selection.

"In these kinds of counter-service settings, the majority of people are still not leaving tips," Lynn explains of carry-out and coffee shop situations.

He adds that tipping does not help small businesses as much as people think. "What tipping does is it gets price-insensitive customers, people who are willing to pay more than they have to, they're effectively subsidizing the patronage of more price-sensitive customers who aren't willing to pay more than they have to because of tipping," he explains.

Catch more of Yahoo Finance's special Small Business: Big Opportunities coverage this week, or watch this full episode of Wealth!

This post was written by Melanie Riehl