1. An amount of money paid in addition to the usual amount with the assumption that some of the proceeds will benefit a popular charity or other cause.

2. Extra money paid for a product which may or not include additional features, products or services aimed at the hippy market.

3. Money paid by those who are predisposed to paying extra for products and services that help them to pretend the 60s never ended.
Cheech paid the hippy tax for his organic milk and soy burger. He spent $25 for lunch, I spent $4.50 on my fast food.

The New beetle is nothing like the old VW Beetle; it's essentially a rounded Golf with a hippy tax added.

The Toyota Prius levies a heavy hippy tax on green consumers who have no concept of total cost of ownership.
by Spirit Bear September 9, 2007