CNBC video on tipping slammed as unfair to waiters

A video on tipping tweeted by CNBC over the weekend sparked controversy.

CNBC is receiving plenty of blowback for a video offering advice on how to save money when dining out at restaurants -- by tipping waiters a little less.

The network tweeted a video Sunday linked to a February 2018 story. In the video, Zack Guzman -- at the time a multimedia reporter for the network -- offered viewers a “simple tipping trick” that he said could save consumers over $400 a year.

Guzman explained that it’s customary to tip servers 15-20 percent according to the Emily Post Institute, a leading etiquette authority. Still, he posed the question of whether you should tip pre-tax or post-tax, showing a bill for a $100 meal had an additional tax of roughly $8. He referred to tipping pre-tax as a potential “game changer.”

He then suggested to viewers that instead of moving the decimal over from the total and doubling it, which is a common way for diners to calculate the tip, to simply double the tax. Guzman concluded that on his bill, he would save $4 and still tip roughly 18 percent tip, saying that if you dined out twice a week for a year, you could save $416.

The video sparked backlash on social media and was ratio’d on Twitter, meaning it had more responses than likes and retweets.

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Guzman responded to critics, arguing that calling out hard-working people who tip less than 20 percent is “just as unfair” as under-tipping a server.

“At no point do I argue not tipping a server. At no point do I argue how to tip. At no point do I say tip less than 15 percent,” Guzman said. “Quite frankly, I was just interested in the fact that some people double the tax to arrive at a tip while others move the decimal to calculate 20 percent like me.”

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Guzman also said he'd moved on from CNBC to Yahoo! Finance.

CNBC did not immediately respond to Fox News' request for comment.