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					Originally Posted by Kevy Baby  The tip should be based on the PRE DISCOUNT total (though others may not agree) | 
	
 Tips are 
always to be calculated on the full, non-discounted amount. It doesn't matter if the discount was 10% or 100%, one must figure tip as if there was no discount. The server's job is not any easier because one has a coupon or is boning the manager.