I double the tax at restaurants by default, good or bad service. $10-$20 for a haircut. 10-15% on a cab ride. Ideally why can't the business owners just pay a fair wage or just charge more for the service to accomodate what we pay in tips. You shouldn't have to suffer tip anxiety after the fact you've already forked over money for a meal/ride/cut etc. I need to stash about $100 in singles in my pants whenever I'm away on business or vacation just to cover baggage handler at airport, cab ride, baggage handler from cab to front desk, baggage handler from front desk to room, doorman, maid, bathroom attendant.........goes on and on, it's getting silly.