Originally Posted by
gobluetwo
Agree. The "appropriate" tip amount seems to be creeping ever upward. I remember a time when 10% was the norm, then 15%, now 18-20%. In another decade, we'll probably be at 25%. Frankly, I feel like anything between 10-20% is acceptable.
In NYC, where the sales tax rate is 8.875% (for restaurants), so to save doing "higher mathematics"

in computing a tip. many people just double the tax on the bill (=17.75%).