Originally Posted by
Zeebrock
When using a credit card I always make the total a round $$ amount. I do this for 2 reasons.
1. It helps prevent fraudulent use of my card, if I see a charge that is not a round number I know its a mistake or fraud.
2. As most others have said it gives the server that little extra as a tip. I tend to calculate the tip on a dollar amount then round up with the change to make a total bill round number.
I used to do the opposite: I would make every credit card transaction at any restaurant a specific final digit, like 8. That way I could quickly scan all the restaurant purchases and ensure that they had been charged correctly.
Of course, that didn't really work since they could have added an extra dollar, but I did find more than once they completely forgot to adjust for the tip, charging me only the original amount. Hard to believe the servers didn't notice that...