When it comes to Tipping a bartender it is not that complex. But let me break it down for anyone that has a few questions. Industry standard is for good service is 20% tip. If you tip 15% the bartender knows your a cheap fucker. If your not running a tab the main rule is to tip 1-2 dollars per drink. This is pretty simple right? Whether or not you think that the bartenders and servers should be paid more and not focus on tips its the standard. Also at most places the bartenders have to tip out the bar backs a percentage of their sales. Most of the time that is around 10% of their tips. So if you tip out less than their tipout, you just made a bartender lose money. If you don’t tip just know that the entire bar staff will judge you. So the moral of the story is to tip or the servers will give you bad service.