If they do a good job, they get a good tip.
Effort. Did they make an effort to do their job. I understand it can be busy and they might not get around to me in a timely manner, but did they make an effort. Did they see me and neglect me. Did they leave me feeling thirsty. It is a bad sign when I have to flag down another waiter because mine is nowhere to be seen. Also a bad sign if I see them flirting with a coworker instead of doing their job. I understand that they work for tips, so it really takes a lot for me to not leave a tip behind.
Just the total of my bill, I am an automatic 20% tipper unless they are HORRIBLE and then they will get about 12%. I've been lucky though.
When I sit down, I'm already thinking the tip is 20%. It is very rare for me to go below that only because I know that (at least in the US) servers get paid way under minimum wage and really depend on tips.
They have to be pretty bad for me to go to 15% and complete A$$ for me to leave nothing.
Just the way I was brought up. Ok, so my family always owned restaurants, but still.....
I always tip, even if the service wasn't great. Quality of service does play a large part in how much I will tip, but I don't have any rules. I just tip what I feel is appropriate -- I do try to keep it at or above 15% though. I feel like if you can't afford to tip, you can't afford to eat out. It's just not a valid excuse.
The quality of their service. Regardless of how bad the food was.
I think I am pretty awesome. Thanks!!
How good of service I got while I was there