To tip or not to tip: The basics of tipping etiquette

A recent study found that Americans tip more now than in previous years. But where should you tip, and how much?

Tipping is expected at places like restaurants and nail salons -- but what about on a flight?

If you thought airplanes were a tip-free zone, you might want to grab some singles before boarding. According to reports, budget air carrier Frontier Airlines is now giving passengers the option to tip flight attendants for serving refreshments.

That makes sense when paired with the results of a recent Consumer Reports survey, which found that, out of 1,000 American adults, 27 percent said there are more situations today where they're expected to tip than there were just two years ago.

Additionally, consumers are becoming increasingly resentful about the idea that they have to tip people just for doing their jobs, like smoothie makers or baristas who swivel point-of-sale iPads in your direction with a pre-calculated tip.

As for how much to tip, Consumer Reports has some guidelines.

A simple rule of thumb is to tip 15 to 20 percent of the pretax restaurant tab.

Don't tip less than 15 percent. If the server was rude or offensive, speak to the manager, but don't stiff the server.

Another finding from Consumer Reports' survey on tipping found that 46 percent of Americans would favor a system that would do away with tipping altogether and instead charge higher prices to cover salaries.

The customers that Consumer Reports spoke to think the new method could be easier and no-hassle.

If you're looking for some tools to help you tip, apps such as Tab, Settle Up and Plates let you split tabs and keep track of who owes what. Still have questions? Consumer Reports has a complete list of recommended service providers to tip and suggested amounts.